35 U.S.C. 113 Drawings.

The applicant shall furnish a drawing where necessary for the understanding of the subject matter to be patented. When the nature of such subject matter admits of illustration by a drawing and the applicant has not furnished such a drawing, the Commissioner may require its submission within a time period of not less than two months from the sending of a notice thereof. Drawings submitted after the filing date of the application may not be used (i) to overcome any insufficiency of the specification due to lack of an enabling disclosure or otherwise inadequate disclosure therein, or (ii) to supplement the original disclosure thereof for the purpose of interpretation of the scope of any claim.

37 C.F.R. 1.81 Drawings required in patent application.

[Editor Note: Para. (a) below is only applicable to patent applications filed under 35 U.S.C. 111 on or after December 18, 2013.]

1. (a) The applicant for a patent is required to furnish a drawing of the invention where necessary for the understanding of the subject matter sought to be patented. Since corrections are the responsibility of the applicant, the original drawing(s) should be retained by the applicant for any necessary future correction.
2. (b) Drawings may include illustrations which facilitate an understanding of the invention (for example, flow sheets in cases of processes, and diagrammatic views).
3. (c) Whenever the nature of the subject matter sought to be patented admits of illustration by a drawing without its being necessary for the understanding of the subject matter and the applicant has not furnished such a drawing, the examiner will require its submission within a time period of not less than two months from the date of the sending of a notice thereof.
4. (d) Drawings submitted after the filing date of the application may not be used to overcome any insufficiency of the specification due to lack of an enabling disclosure or otherwise inadequate disclosure therein, or to supplement the original disclosure thereof for the purpose of interpretation of the scope of any claim.

37 C.F.R. 1.81 (pre-PLT) Drawings required in patent application

[Editor Note: Para. (a) below is applicable to patent applications filed before December 18, 2013.]

1. (a) The applicant for a patent is required to furnish a drawing of the invention where necessary for the understanding of the subject matter sought to be patented; this drawing, or a high quality copy thereof, must be filed with the application. Since corrections are the responsibility of the applicant, the original drawing(s) should be retained by the applicant for any necessary future correction.

*****

I. FILING DATE IN THE ABSENCE OF DRAWING

A. Applications Filed under 35 U.S.C. 111 on or after December 18, 2013

For applications filed on or after December 18, 2013, other than design applications, 35 U.S.C. 111 no longer requires that an application contain a drawing where necessary for the understanding of the subject matter sought to be patented to be entitled to a filing date. 35 U.S.C. 113 continues to provide, however, that "[t]he applicant shall furnish a drawing where necessary for the understanding of the subject matter sought to be patented" and that "[d]rawings submitted after the filing date of the application may not be used (i) to overcome any insufficiency of the specification due to lack of an enabling disclosure or otherwise inadequate disclosure therein, or (ii) to supplement the original disclosure thereof for the purpose of interpretation of the scope of any claim." Thus, the absence of any drawing on the filing date of an application where a drawing is necessary for the understanding of the subject matter sought to be patented may result in an applicant not being able to obtain a patent for any claimed invention presented in the application, but except for design applications, the absence of any drawing on the filing of an application no longer raises a question as to whether the application is entitled to a filing date.

Pursuant to 35 U.S.C. 171, a design application (whether filed before, on, or after December 18, 2013) must be filed with any required drawing to be entitled to a filing date.

The preparation of drawings for a provisional or nonprovisional application is prudent where a drawing is necessary for the understanding of the subject matter sought to be patented, and inclusion of such drawing(s) with the application on filing will help ensure that the requirements of 35 U.S.C. 113 are satisfied for any such claimed invention.

B. Applications Filed before December 18, 2013

For applications filed under 35 U.S.C. 111 before December 18, 2013, a drawing (where necessary for the understanding of the subject matter sought to be patented), or a high quality copy thereof, must be filed with the application. See pre-PLT 35 U.S.C. 111, 35 U.S.C. 113, and pre-PLT 37 CFR 1.81.

In accordance with pre-PLT 35 U.S.C. 111, a specification and any necessary drawing(s) are among the requirements for an application to be given a filing date. The first sentence of 35 U.S.C 113 requires a drawing to be submitted where such drawing is necessary for the understanding of the invention. In this situation, the lack of a drawing renders the application incomplete and, as such, the application cannot be given a filing date until the drawing is received. The second sentence of 35 U.S.C. 113 addresses the situation wherein a drawing is not necessary for the understanding of the invention, but the subject matter sought to be patented admits of illustration and no drawing was submitted on filing. The lack of a drawing in this situation does not render the application incomplete but rather is treated as an informality. The examiner should require such drawings in almost all such instances. Such drawings could be required during the initial processing of the application but do not have to be furnished at the time the application is filed. The applicant is given at least two months from the date of the letter requiring drawings to submit the drawing(s).

II. RECEIPT OF DRAWING AFTER THE FILING DATE

If the examiner discovers new matter in a substitute or additional drawing, the drawing should not be entered and the examiner should describe the new matter that resulted in non-entry in the next Office action. A new drawing without such new matter may be required if the examiner determines that a drawing is needed under 37 CFR 1.81 or 37 CFR 1.83. Form paragraph 6.37, reproduced in MPEP § 608.02(h), may be used. The examiner’s decision would be reviewable by filing a petition under 37 CFR 1.181. The Technology Center (TC) Director would decide such a petition.

III. HANDLING OF DRAWING REQUIREMENTS UNDER THE FIRST SENTENCE OF 35 U.S.C. 113

The Office of Patent Application Processing (OPAP) will make the initial decision in all new applications as to whether a drawing is "necessary" under the first sentence of 35 U.S.C. 113. A drawing will be considered necessary under the first sentence of 35 U.S.C. 113 in all applications where the drawing is referred to in the specification and one or more figures have been omitted.

The determination under 35 U.S.C. 113 (first sentence) as to when a drawing is necessary will be handled in OPAP in accordance with the following procedure. OPAP will make the initial determination as to whether drawings are required for the understanding of the subject matter of the invention. When no drawings are included in the application as filed and drawings are required, the applicant is so informed by OPAP. A filing date will not be granted if the application was filed under 35 U.S.C. 111 before December 18, 2013 and applicant will be notified to complete the application (37 CFR 1.53(e) ). If a drawing is later furnished in an application filed under 35 U.S.C. 111 before December 18, 2013, a filing date may be granted as of the date of receipt of such drawing.

An OPAP formality examiner should not treat an application without drawings as incomplete if drawings are not required. A drawing is not required for a filing date for applications, other than design applications, filed under 35 U.S.C. 111 on or after December 18, 2013. For applications filed before December 18, 2013 a drawing is not required for a filing date under pre-PLT 35 U.S.C. 111 if the application contains:

1. (A) at least one process claim including the term "process" or "method" in its introductory phrase;
2. (B) at least one composition claim including the term "composition," "compound," "mixture" or "pharmaceutical" in its introductory phrase;
3. (C) at least one claim directed to a coated article or product or to an article or product made from a particular material or composition (i.e., an article of known and conventional character (e.g., a table), coated with or made of a particular composition (e.g., a specified polymer such as polyvinyl-chloride));
4. (D) at least one claim directed to a laminated article or product (i.e., a laminated article of known and conventional character (e.g., a table)); or
5. (E) at least one claim directed to an article, apparatus, or system where the sole distinguishing feature is the presence of a particular material (e.g., a hydraulic system using a particular hydraulic fluid, or a conventional packaged suture using a particular material).

For a more complete explanation about when a drawing is required, see MPEP § 601.01(f). For applications submitted without all of the drawings described in the specification, see MPEP § 601.01(g).

If an examiner determines that a filing date should not have been granted in an application filed before December 18, 2013 because it does not contain drawings, the matter should be brought to the attention of the supervisory patent examiner (SPE) for review. If the SPE decides that drawings are required to understand the subject matter of the invention, the SPE should return the application to OPAP with a typed, signed, and dated memorandum requesting cancellation of the filing date and identifying the subject matter required to be illustrated.

IV. HANDLING OF DRAWING REQUIREMENTS UNDER THE SECOND SENTENCE OF 35 U.S.C. 113 - ILLUSTRATION SUBSEQUENTLY REQUIRED

35 U.S.C.113 addresses the situation wherein a drawing is not necessary for the understanding of the invention, but the subject matter sought to be patented admits of illustration by a drawing and the applicant has not furnished a drawing. The lack of a drawing in this situation is treated as an informality. A filing date will be accorded with the original presentation of the papers. The acceptance of an application without a drawing does not preclude the examiner from requiring an illustration in the form of a drawing under 37 CFR 1.81(c). In requiring such a drawing, the examiner should clearly indicate that the requirement is made under 37 CFR 1.81(c) which applies when the nature of the subject matter sought to be patented admits of illustration by a drawing without its being necessary for the understanding of the subject matter. Examiners making such requirements are to specifically require, as a part of the applicant’s next reply, at least an ink sketch or permanent print of any drawing in reply to the requirement, even though no allowable subject matter is yet indicated. This will afford the examiner an early opportunity to determine the sufficiency of the illustration and the absence of new matter. See 37 CFR 1.121 and 37 CFR 1.81(d). One of the following form paragraphs may be used to require a drawing:

The subject matter of this application admits of illustration by a drawing to facilitate understanding of the invention. Applicant is required to furnish a drawing under 37 CFR 1.81(c). No new matter may be introduced in the required drawing. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d).

Examiner Note:

When requiring drawings before examination use form paragraph 6.23.01 with a PTOL-90 or PTO-90C form as a cover sheet.

The subject matter of this application admits of illustration by a drawing to facilitate understanding of the invention. Applicant is required to furnish a drawing under 37 CFR 1.81. No new matter may be introduced in the required drawing.

Applicant is given a shortened statutory period of TWO (2) MONTHS to submit a drawing in compliance with 37 CFR 1.81. Extensions of time may be obtained under the provisions of 37 CFR 1.136(a) but in no case can any extension carry the date for reply to this letter beyond the maximum period of SIX MONTHS set by statute (35 U.S.C. 133 ). Failure to timely submit a drawing will result in ABANDONMENT of the application.

Examiner Note:

1. Use of this form paragraph should be extremely rare and limited to those instances where no examination can be performed due to lack of an illustration of the invention resulting in a lack of understanding of the claimed subject matter.

2. Use a PTOL-90 or PTO-90C form as a cover sheet for this communication.

Applicant should also amend the specification accordingly to refer to the new illustration at the time of submission of the drawing(s). This may obviate further correspondence where an amendment places the application in condition for allowance.

V. DRAWING STANDARDS

37 C.F.R. 1.84 Standards for drawings.

1. (a) Drawings. There are two acceptable categories for presenting drawings in utility and design patent applications.
   1. (1) Black ink. Black and white drawings are normally required. India ink, or its equivalent that secures solid black lines, must be used for drawings; or
   2. (2) Color.Color drawings are permitted in design applications. Where a design application contains color drawings, the application must include the number of sets of color drawings required by paragraph (a)(2)(ii) of this section and the specification must contain the reference required by paragraph (a)(2)(iii) of this section. On rare occasions, color drawings may be necessary as the only practical medium by which to disclose the subject matter sought to be patented in a utility patent application. The color drawings must be of sufficient quality such that all details in the drawings are reproducible in black and white in the printed patent. Color drawings are not permitted in international applications (see PCT Rule 11.13 ). The Office will accept color drawings in utility patent applications only after granting a petition filed under this paragraph explaining why the color drawings are necessary. Any such petition must include the following:
      1. (i) The fee set forth in § 1.17(h);
      2. (ii) One (1) set of color drawings if submitted via the USPTO patent electronic filing system, or three (3) sets of color drawings if not submitted via the USPTO patent electronic filing system; and
      3. (iii) An amendment to the specification to insert (unless the specification contains or has been previously amended to contain) the following language as the first paragraph of the brief description of the drawings:

         The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

2. (b) Photographs.—
   1. (1) Black and white. Photographs, including photocopies of photographs, are not ordinarily permitted in utility and design patent applications. The Office will accept photographs in utility and design patent applications, however, if photographs are the only practicable medium for illustrating the claimed invention. For example, photographs or photomicrographs of: electrophoresis gels, blots (e.g., immunological, western, Southern, and northern), auto- radiographs, cell cultures (stained and unstained), histological tissue cross sections (stained and unstained), animals, plants, in vivo imaging, thin layer chromatography plates, crystalline structures, and, in a design patent application, ornamental effects, are acceptable. If the subject matter of the application admits of illustration by a drawing, the examiner may require a drawing in place of the photograph. The photographs must be of sufficient quality so that all details in the photographs are reproducible in the printed patent.
   2. (2) Color photographs. Color photographs will be accepted in utility and design patent applications if the conditions for accepting color drawings and black and white photographs have been satisfied. See paragraphs (a)(2) and (b)(1) of this section.
3. (c) Identification of drawings. Identifying indicia should be provided, and if provided, should include the title of the invention, inventor’s name, and application number, or docket number (if any) if an application number has not been assigned to the application. If this information is provided, it must be placed on the front of each sheet within the top margin. Each drawing sheet submitted after the filing date of an application must be identified as either "Replacement Sheet" or "New Sheet" pursuant to § 1.121(d). If a marked-up copy of any amended drawing figure including annotations indicating the changes made is filed, such marked-up copy must be clearly labeled as "Annotated Sheet" pursuant to § 1.121(d)(1).
4. (d) Graphic forms in drawings. Chemical or mathematical formulae, tables, and waveforms may be submitted as drawings and are subject to the same requirements as drawings. Each chemical or mathematical formula must be labeled as a separate figure, using brackets when necessary, to show that information is properly integrated. Each group of waveforms must be presented as a single figure, using a common vertical axis with time extending along the horizontal axis. Each individual waveform discussed in the specification must be identified with a separate letter designation adjacent to the vertical axis.
5. (e) Type of paper. Drawings submitted to the Office must be made on paper which is flexible, strong, white, smooth, non-shiny, and durable. All sheets must be reasonably free from cracks, creases, and folds. Only one side of the sheet may be used for the drawing. Each sheet must be reasonably free from erasures and must be free from alterations, overwritings, and interlineations. Photographs must be developed on paper meeting the sheet-size requirements of paragraph (f) of this section and the margin requirements of paragraph (g) of this section. See paragraph (b) of this section for other requirements for photographs.
6. (f) Size of paper. All drawing sheets in an application must be the same size. One of the shorter sides of the sheet is regarded as its top. The size of the sheets on which drawings are made must be:
   1. (1) 21.0 cm. by 29.7 cm. (DIN size A4), or
   2. (2) 21.6 cm. by 27.9 cm. (8 1/2 by 11 inches).
7. (g) Margins. The sheets must not contain frames around the sight (i.e., the usable surface), but should have scan target points (i.e., cross-hairs) printed on two cater-corner margin corners. Each sheet must include a top margin of at least 2.5 cm. (1 inch), a left side margin of at least 2.5 cm. (1 inch), a right side margin of at least 1.5 cm. (5/8 inch), and a bottom margin of at least 1.0 cm. (3/8 inch), thereby leaving a sight no greater than 17.0 cm. by 26.2 cm. on 21.0 cm. by 29.7 cm. (DIN size A4) drawing sheets, and a sight no greater than 17.6 cm. by 24.4 cm. (6 15/16 by 9 5/8 inches) on 21.6 cm. by 27.9 cm. (8 1/2 by 11 inch) drawing sheets.
8. (h) Views. The drawing must contain as many views as necessary to show the invention. The views may be plan, elevation, section, or perspective views. Detail views of portions of elements, on a larger scale if necessary, may also be used. All views of the drawing must be grouped together and arranged on the sheet(s) without wasting space, preferably in an upright position, clearly separated from one another, and must not be included in the sheets containing the specifications, claims, or abstract. Views must not be connected by projection lines and must not contain center lines. Waveforms of electrical signals may be connected by dashed lines to show the relative timing of the waveforms.
   1. (1) Exploded views. Exploded views, with the separated parts embraced by a bracket, to show the relationship or order of assembly of various parts are permissible. When an exploded view is shown in a figure which is on the same sheet as another figure, the exploded view should be placed in brackets.
   2. (2) Partial views. When necessary, a view of a large machine or device in its entirety may be broken into partial views on a single sheet, or extended over several sheets if there is no loss in facility of understanding the view. Partial views drawn on separate sheets must always be capable of being linked edge to edge so that no partial view contains parts of another partial view. A smaller scale view should be included showing the whole formed by the partial views and indicating the positions of the parts shown. When a portion of a view is enlarged for magnification purposes, the view and the enlarged view must each be labeled as separate views.
      1. (i) Where views on two or more sheets form, in effect, a single complete view, the views on the several sheets must be so arranged that the complete figure can be assembled without concealing any part of any of the views appearing on the various sheets.
      2. (ii) A very long view may be divided into several parts placed one above the other on a single sheet. However, the relationship between the different parts must be clear and unambiguous.
   3. (3) Sectional views. The plane upon which a sectional view is taken should be indicated on the view from which the section is cut by a broken line. The ends of the broken line should be designated by Arabic or Roman numerals corresponding to the view number of the sectional view, and should have arrows to indicate the direction of sight. Hatching must be used to indicate section portions of an object, and must be made by regularly spaced oblique parallel lines spaced sufficiently apart to enable the lines to be distinguished without difficulty. Hatching should not impede the clear reading of the reference characters and lead lines. If it is not possible to place reference characters outside the hatched area, the hatching may be broken off wherever reference characters are inserted. Hatching must be at a substantial angle to the surrounding axes or principal lines, preferably 45°. A cross section must be set out and drawn to show all of the materials as they are shown in the view from which the cross section was taken. The parts in cross section must show proper material(s) by hatching with regularly spaced parallel oblique strokes, the space between strokes being chosen on the basis of the total area to be hatched. The various parts of a cross section of the same item should be hatched in the same manner and should accurately and graphically indicate the nature of the material(s) that is illustrated in cross section. The hatching of juxtaposed different elements must be angled in a different way. In the case of large areas, hatching may be confined to an edging drawn around the entire inside of the outline of the area to be hatched. Different types of hatching should have different conventional meanings as regards the nature of a material seen in cross section.
   4. (4) Alternate position. A moved position may be shown by a broken line superimposed upon a suitable view if this can be done without crowding; otherwise, a separate view must be used for this purpose.
   5. (5) Modified forms. Modified forms of construction must be shown in separate views.
9. (i) Arrangement of views. One view must not be placed upon another or within the outline of another. All views on the same sheet should stand in the same direction and, if possible, stand so that they can be read with the sheet held in an upright position. If views wider than the width of the sheet are necessary for the clearest illustration of the invention, the sheet may be turned on its side so that the top of the sheet, with the appropriate top margin to be used as the heading space, is on the right-hand side. Words must appear in a horizontal, left-to-right fashion when the page is either upright or turned so that the top becomes the right side, except for graphs utilizing standard scientific convention to denote the axis of abscissas (of X) and the axis of ordinates (of Y).
10. (j) Front page view. The drawing must contain as many views as necessary to show the invention. One of the views should be suitable for inclusion on the front page of the patent application publication and patent as the illustration of the invention. Views must not be connected by projection lines and must not contain center lines. Applicant may suggest a single view (by figure number) for inclusion on the front page of the patent application publication and patent.
11. (k) Scale. The scale to which a drawing is made must be large enough to show the mechanism without crowding when the drawing is reduced in size to two-thirds in reproduction. Indications such as "actual size" or "scale 1/2" on the drawings are not permitted since these lose their meaning with reproduction in a different format.
12. (l) Character of lines, numbers, and letters. All drawings must be made by a process which will give them satisfactory reproduction characteristics. Every line, number, and letter must be durable, clean, black (except for color drawings), sufficiently dense and dark, and uniformly thick and well-defined. The weight of all lines and letters must be heavy enough to permit adequate reproduction. This requirement applies to all lines however fine, to shading, and to lines representing cut surfaces in sectional views. Lines and strokes of different thicknesses may be used in the same drawing where different thicknesses have a different meaning.
13. (m) Shading. The use of shading in views is encouraged if it aids in understanding the invention and if it does not reduce legibility. Shading is used to indicate the surface or shape of spherical, cylindrical, and conical elements of an object. Flat parts may also be lightly shaded. Such shading is preferred in the case of parts shown in perspective, but not for cross sections. See paragraph (h)(3) of this section. Spaced lines for shading are preferred. These lines must be thin, as few in number as practicable, and they must contrast with the rest of the drawings. As a substitute for shading, heavy lines on the shade side of objects can be used except where they superimpose on each other or obscure reference characters. Light should come from the upper left corner at an angle of 45°. Surface delineations should preferably be shown by proper shading. Solid black shading areas are not permitted, except when used to represent bar graphs or color.
14. (n) Symbols. Graphical drawing symbols may be used for conventional elements when appropriate. The elements for which such symbols and labeled representations are used must be adequately identified in the specification. Known devices should be illustrated by symbols which have a universally recognized conventional meaning and are generally accepted in the art. Other symbols which are not universally recognized may be used, subject to approval by the Office, if they are not likely to be confused with existing conventional symbols, and if they are readily identifiable.
15. (o) Legends. Suitable descriptive legends may be used subject to approval by the Office, or may be required by the examiner where necessary for understanding of the drawing. They should contain as few words as possible.
16. (p) Numbers, letters, and reference characters.
    1. (1) Reference characters (numerals are preferred), sheet numbers, and view numbers must be plain and legible, and must not be used in association with brackets or inverted commas, or enclosed within outlines, e.g., encircled. They must be oriented in the same direction as the view so as to avoid having to rotate the sheet. Reference characters should be arranged to follow the profile of the object depicted.
    2. (2) The English alphabet must be used for letters, except where another alphabet is customarily used, such as the Greek alphabet to indicate angles, wavelengths, and mathematical formulas.
    3. (3) Numbers, letters, and reference characters must measure at least .32 cm. (1/8 inch) in height. They should not be placed in the drawing so as to interfere with its comprehension. Therefore, they should not cross or mingle with the lines. They should not be placed upon hatched or shaded surfaces. When necessary, such as indicating a surface or cross section, a reference character may be underlined and a blank space may be left in the hatching or shading where the character occurs so that it appears distinct.
    4. (4) The same part of an invention appearing in more than one view of the drawing must always be designated by the same reference character, and the same reference character must never be used to designate different parts.
    5. (5) Reference characters not mentioned in the description shall not appear in the drawings. Reference characters mentioned in the description must appear in the drawings.
17. (q) Lead lines. Lead lines are those lines between the reference characters and the details referred to. Such lines may be straight or curved and should be as short as possible. They must originate in the immediate proximity of the reference character and extend to the feature indicated. Lead lines must not cross each other. Lead lines are required for each reference character except for those which indicate the surface or cross section on which they are placed. Such a reference character must be underlined to make it clear that a lead line has not been left out by mistake. Lead lines must be executed in the same way as lines in the drawing. See paragraph (l) of this section.
18. (r) Arrows. Arrows may be used at the ends of lines, provided that their meaning is clear, as follows:
    1. (1) On a lead line, a freestanding arrow to indicate the entire section towards which it points;
    2. (2) On a lead line, an arrow touching a line to indicate the surface shown by the line looking along the direction of the arrow; or
    3. (3) To show the direction of movement.
19. (s) Copyright or Mask Work Notice. A copyright or mask work notice may appear in the drawing, but must be placed within the sight of the drawing immediately below the figure representing the copyright or mask work material and be limited to letters having a print size of .32 cm. to .64 cm. (1/8 to 1/4 inches) high. The content of the notice must be limited to only those elements provided for by law. For example, "©1983 John Doe" (17 U.S.C. 401) and "*M* John Doe" (17 U.S.C. 909) would be properly limited and, under current statutes, legally sufficient notices of copyright and mask work, respectively. Inclusion of a copyright or mask work notice will be permitted only if the authorization language set forth in § 1.71(e) is included at the beginning (preferably as the first paragraph) of the specification.
20. (t) Numbering of sheets of drawings. The sheets of drawings should be numbered in consecutive Arabic numerals, starting with 1, within the sight as defined in paragraph (g) of this section. These numbers, if present, must be placed in the middle of the top of the sheet, but not in the margin. The numbers can be placed on the right-hand side if the drawing extends too close to the middle of the top edge of the usable surface. The drawing sheet numbering must be clear and larger than the numbers used as reference characters to avoid confusion. The number of each sheet should be shown by two Arabic numerals placed on either side of an oblique line, with the first being the sheet number and the second being the total number of sheets of drawings, with no other marking.
21. (u) Numbering of views.
    1. (1) The different views must be numbered in consecutive Arabic numerals, starting with 1, independent of the numbering of the sheets and, if possible, in the order in which they appear on the drawing sheet(s). Partial views intended to form one complete view, on one or several sheets, must be identified by the same number followed by a capital letter. View numbers must be preceded by the abbreviation "FIG." Where only a single view is used in an application to illustrate the claimed invention, it must not be numbered and the abbreviation "FIG." must not appear.
    2. (2) Numbers and letters identifying the views must be simple and clear and must not be used in association with brackets, circles, or inverted commas. The view numbers must be larger than the numbers used for reference characters.
22. (v) Security markings. Authorized security markings may be placed on the drawings provided they are outside the sight, preferably centered in the top margin.
23. (w) Corrections. Any corrections on drawings submitted to the Office must be durable and permanent.
24. (x) Holes. No holes should be made by applicant in the drawing sheets.
25. (y) Types of drawings. See § 1.152 for design drawings, § 1.1026 for international design reproductions, § 1.165 for plant drawings, and § 1.173(a)(2) for reissue drawings.

See MPEP § 608.02(b) for information pertaining to the acceptability of drawings. Note that good quality copies are acceptable if the lines are uniformly thick, black, and solid.

Each drawing sheet submitted after the filing date of an application must be identified as either "Replacement Sheet" or "New Sheet" so that the Office will recognize how to treat such a drawing sheet for entry into the application. See 37 CFR 1.84(c). Corrections to drawings must be made in the form of replacement sheets labeled, in the header, "Replacement Sheet" since the Office does not release drawings for correction. See 37 CFR 1.85. If a marked-up copy of any amended drawing figure, including annotations indicating the changes made, is filed, such marked-up copy must be clearly labeled as "Annotated Sheet."

Black and white drawings are permitted to be transmitted by facsimile if the drawings are being submitted after the filing date of the application. Applicants should ensure that the facsimile transmission process does not unreasonably degrade the quality of the drawings. Color drawings are not permitted to be transmitted by facsimile. See 37 CFR 1.6(d)(4).

Drawings are currently accepted in two different size formats. It is, however, required that all drawing sheets in a particular application be the same size for ease of handling.

For information regarding certified copies of an application-as-filed which does not meet the sheet size/margin and quality requirements of 37 CFR 1.52, 1.84(f), and 1.84(g), see MPEP § 608.01, subsection III.

For design patent drawings, 37 CFR 1.152, see MPEP § 1503.02.

For international design reproductions, 37 CFR 1.1026, see MPEP § 2920.04(b). Note that pursuant to 37 CFR 1.1061, the provisions of 37 CFR 1.84, except for 1.84(c), do not apply to international design applications.

For plant patent drawings, 37 CFR 1.165, see MPEP § 1606.

For reissue application drawings, see MPEP § 1413.

For correction of drawings, see MPEP § 608.02(p). For return of drawings, see MPEP § 608.02(y).

For amendment of drawings, 37 CFR 1.121(d), see MPEP § 714.

The filing of a divisional or continuation application under the provisions of 37 CFR 1.53(b) does not obviate the need for acceptable drawings. See MPEP § 608.02(b).

See MPEP § 601.01(f) for treatment of design applications without drawings or applications filed prior to December 18, 2013 without drawings and MPEP § 601.01(g) for treatment of applications filed without all figures of drawings or applications, other than a design application, filed on or after December 18, 2013 without drawings.

VI. DEFINITIONS

A number of different terms are used when referring to drawings in patent applications. The following definitions are used in this Manual.

Original drawings: The drawing submitted with the application when filed.

Substitute drawing: A drawing filed later than the filing date of an application. Usually submitted to replace an original drawing that was unacceptable.

Acceptable drawing: A drawing that is acceptable for publication of the application or issuance of the patent.

Corrected drawing: A drawing that includes corrections of informalities and changes approved by the examiner.

Unacceptable drawing: The Office no longer considers drawings as formal or informal; drawings are either acceptable or unacceptable. Drawings that do not comply with all of the form requirements of 37 CFR 1.84, e.g., because they are not on the proper size sheets, or the quality of the lines is poor, may be acceptable for the purposes of publication and examination if the drawings are readable and reproducible for publication purposes. An objection will generally only be made to a drawing that does not comply with the form requirements of 37 CFR 1.84 if the Office is unable to reproduce the drawing or the contents of the drawing are unacceptable to the examiner.

Plan: This term is used to illustrate the top view.

Elevation: This term is used to illustrate views showing the height of objects.

VII. BLACK AND WHITE PHOTOGRAPHS AND LINE DRAWINGS

37 C.F.R. 1.84 Standards for drawings.

1. (a) Drawings. There are two acceptable categories for presenting drawings in utility and design patent applications.
   1. (1) Black ink. Black and white drawings are normally required. India ink, or its equivalent that secures solid black lines, must be used for drawings; or

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1. (b) Photographs.—
   1. (1) Black and white. Photographs, including photocopies of photographs, are not ordinarily permitted in utility and design patent applications. The Office will accept photographs in utility and design patent applications, however, if photographs are the only practicable medium for illustrating the claimed invention. For example, photographs or photomicrographs of: electrophoresis gels, blots (e.g., immunological, western, Southern, and northern), auto- radiographs, cell cultures (stained and unstained), histological tissue cross sections (stained and unstained), animals, plants, in vivo imaging, thin layer chromatography plates, crystalline structures, and, in a design patent application, ornamental effects, are acceptable. If the subject matter of the application admits of illustration by a drawing, the examiner may require a drawing in place of the photograph. The photographs must be of sufficient quality so that all details in the photographs are reproducible in the printed patent.

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A. Black And White Drawings

Black and white drawings are normally required in utility patent applications. India ink, or its equivalent that secures solid black lines, must be used for drawings. See MPEP § 608.02(c) for information relating to the location of drawings in IFW applications.

B. Black And White Photographs And Grayscale Drawings

Black and white photographs, including photocopies of photographs, are not ordinarily permitted in utility and design patent applications. Photographs or photomicrograph printed on sensitized paper are acceptable as drawings, in lieu of India ink drawings, as are photographic images submitted via the USPTO patent electronic filing system, to illustrate inventions which are incapable of being accurately or adequately depicted by India ink drawings, e.g., electrophoresis gels, blots, (e.g., immunological, western, Southern, and northern), autoradiographs, cell cultures (stained and unstained), histological tissue cross sections (stained and unstained), animals, plants, in vivo imaging, thin layer chromatography plates, crystalline structures, metallurgical microstructures, textile fabrics, grain structures and, in a design patent application, ornamental effects. The photographs or photomicrographs must show the invention more clearly than they can be done by India ink drawings and otherwise comply with the rules concerning such drawings.

Black and white photographs submitted in lieu of ink drawings must comply with 37 CFR 1.84(b). There is no requirement for a petition or petition fee, and only one set of photographs is required. See 37 CFR 1.84(b)(1).

To be acceptable, such photographs must be of sufficient quality so that all details in the photographs are reproducible in the printed patent. If several photographs are used to make one sheet of drawings, the photographs must be contained on a single sheet.

See MPEP § 608.02(c) for information relating to the location of drawings in IFW applications. See MPEP § 1503.02 for discussion of photographs used in design patent applications.

VIII. COLOR DRAWINGS OR COLOR PHOTOGRAPHS

37 C.F.R. 1.84 Standards for drawings.

1. (a) Drawings. There are two acceptable categories for presenting drawings in utility and design patent applications:
   1. *****
   2. (2) Color. Color drawings are permitted in design applications. Where a design application contains color drawings, the application must include the number of sets of color drawings required by paragraph (a)(2)(ii) of this section and the specification must contain the reference required by paragraph (a)(2)(iii) of this section. On rare occasions, color drawings may be necessary as the only practical medium by which to disclose the subject matter sought to be patented in a utility patent application. The color drawings must be of sufficient quality such that all details in the drawings are reproducible in black and white in the printed patent. Color drawings are not permitted in international applications (see PCT Rule 11.13 ). The Office will accept color drawings in utility patent applications only after granting a petition filed under this paragraph explaining why the color drawings are necessary. Any such petition must include the following:
      1. (i) The fee set forth in § 1.17(h);
      2. (ii) One (1) set of color drawings if submitted via the USPTO patent electronic filing system, or three (3) sets of color drawings if not submitted via the USPTO patent electronic filing system; and
      3. (iii) An amendment to the specification to insert (unless the specification contains or has been previously amended to contain) the following language as the first paragraph of the brief description of the drawings:

         The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

2. (b) Photographs .
   1. *****
   2. (2) Color photographs. Color photographs will be accepted in utility and design patent applications if the conditions for accepting color drawings and black and white photographs have been satisfied. See paragraphs (a)(2) and (b)(1) of this section.

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Color drawings and color photographs are permitted in design applications without the need for a petition. However, the specification of design applications filed under 35 U.S.C. 111(a) must include, or be amended to include, the reference to a drawing executed in color as provided for in 37 CFR 1.84(a)(2)(iii). Note that the drawing requirements set forth in 37 CFR 1.84 do not apply to nonprovisional international design applications, except for those set forth in 37 CFR 1.84(c). See 37 CFR 1.1061(b).

Color drawings and color photographs are not accepted in utility applications filed under 35 U.S.C. 111 unless a petition filed under 37 CFR 1.84(a)(2) or (b)(2) is granted. Color drawings and color photographs are not permitted in international applications (see PCT Rule 11.13 ).

Unless a petition is filed and granted, color drawings or color photographs will not be accepted in a utility patent application filed under 35 U.S.C. 111. The examiner must object to the color drawings or color photographs as being improper and require applicant either to cancel the drawings or to provide substitute black and white drawings.

Under 37 CFR 1.84(a)(2) and (b)(2), the applicant must file a petition with fee requesting acceptance of the color drawings or color photographs. Color drawings and photographs must be of sufficient quality such that all details in the drawings are reproducible in black and white in the printed patent. Color photographs may be acceptable if the conditions for accepting color drawings and black and white photographs are met. One set of color drawings or color photographs is required if submitted via the USPTO patent electronic filing system, or three sets of color drawings or color photographs are required if not submitted via the USPTO patent electronic filing system (37 CFR 1.84(a)(2)(ii) ). The petition is decided by a Supervisory Patent Examiner. See MPEP § 1002.02(d).

Color photographs or color drawings will be stored in a content management system and a black and white copy thereof will be placed in the file wrapper along with a placeholder sheet. Color drawings or color photographs submitted in paper are also maintained in an artifact folder.

Where color drawings or color photographs are filed in a continuing utility application, applicant must renew the petition under 37 CFR 1.84(a)(2) and (b)(2) even though a similar petition was filed in the prior application. Until the renewed petition is granted, the examiner must object to the color drawings or color photographs in the utility patent application as being improper.

Utility patents granted prior to April 18, 2023, were published in paper. The patent copies printed at that time depict the drawings in black and white only. However, a set of color drawings or color photographs was attached to the Letters Patent. Utility patents granted on or after April 18, 2023 are issued as an electronic grant (egrant) which will include color drawings or color photographs. See MPEP § 1309. Copies of any patent with color drawings or color photographs attached thereto will be provided by the U.S. Patent and Trademark Office upon special request and payment of the fee necessary to recover the actual costs associated therewith.

All issued utility patents are presented with black and white drawings or photographs in the USPTO search systems. Accordingly, the petition must also be accompanied by a proposed amendment to insert the following language as the first paragraph in the portion of the specification containing a brief description of the drawings:

The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

If color drawings or color photographs have been filed, but the required petition has not, form paragraph 6.24.01 may be used to notify applicant that a petition is needed.

Color photographs and color drawings are not accepted in utility applications unless a petition filed under 37 CFR 1.84(a)(2) is granted. Any such petition must be accompanied by the appropriate fee set forth in 37 CFR 1.17(h), one set of color drawings or color photographs, as appropriate, if submitted via the USPTO patent electronic filing system or three sets of color drawings or color photographs, as appropriate, if not submitted via the USPTO patent electronic filing system, and, unless already present, an amendment to include the following language as the first paragraph of the brief description of the drawings section of the specification:

The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

Color photographs will be accepted if the conditions for accepting color drawings and black and white photographs have been satisfied. See 37 CFR 1.84(b)(2).

Examiner Note:

1. This form paragraph should be used only if the application contains color photographs or color drawings as the drawings required by 37 CFR 1.81.

2. This form paragraph should not be used in design applications.

It is anticipated that such a petition will be granted only when the U.S. Patent and Trademark Office has determined that a color drawing or color photograph is the only practical medium by which to disclose in a printed utility patent the subject matter to be patented.

It is emphasized that a decision to grant the petition should not be regarded as an indication that color drawings or color photographs are necessary to comply with a statutory requirement. In this latter respect, clearly it is desirable to file any desired color drawings or color photographs as part of the original application papers in order to avoid issues concerning statutory defects (e.g., lack of enablement under 35 U.S.C. 112 or new matter under 35 U.S.C. 132 ).

See MPEP § 608.02(c) for information relating to the location of drawings in IFW applications.

IX. DRAWING SYMBOLS

37 CFR 1.84(n) indicates that graphic drawing symbols and other labeled representations may be used for conventional elements where appropriate, subject to approval by the Office. Also, suitable legends may be used, or may be required, in proper cases. The American National Standards Institute (ANSI) (www.ansi.org ) and the International Organization for Standardization (ISO) (www.iso.org ) are organizations whose numerous publications include some that pertain to graphical symbols; the symbols therein are considered to be generally acceptable in patent drawings. Although ANSI and ISO documents and other published sources may be used as guides during the selection of graphic symbols for patent drawings, the Office will not "approve" any published collection of symbols as a group because their use and clarity must be decided on a case-by-case basis. Overly specific symbols should be avoided. Symbols with unclear meanings should be labeled for clarification.

Since design patents protect the appearance of an article, graphic drawing symbols in design patent applications should be used judiciously, as the drawing symbol may interfere with a clear showing of the design. See MPEP § 1503.02, subsection V. In addition, because color drawings may now be filed in a design application without the need for a petition, applicants may prefer to represent color using color drawings instead of using graphic symbols. See MPEP § 1503.02, subsection V, and MPEP § 608.02, subsection VIII, for the submission of color drawings in design applications.

The following symbols should be used to indicate various materials where the material is an important feature of the invention. The use of conventional features is very helpful in making prior art searches.

See MPEP § 608.02 for the procedure to follow when drawings have not been filed, but a drawing will aid in the understanding of the invention. See MPEP § 601.01(f) or 601.01(g) for the procedures to follow when applications appear to be missing drawing(s). Drawings in utility and plant applications will be reviewed by the Office of Patent Application Processing (OPAP) for compliance with certain requirements of 37 CFR 1.84. OPAP will send a Notice to File Corrected Application Papers if the drawings are unacceptable for purposes of publication. The notice will give applicant a time period of two (2) months from the mailing date of the notice to file acceptable drawings. This time period for reply is extendable under 37 CFR 1.136(a). OPAP will not release applications to the Technology Centers until acceptable drawings are filed in the applications.

If at the time of the initial assignment of an application to an examiner’s docket, or if at the time the application is taken up for action, the supervisory patent examiner believes the drawings to be of such a condition as to not permit reasonable examination of the application, applicant should be required to immediately submit corrected drawings. However, if the drawings do permit reasonable examination and the supervisory patent examiner believes the drawings are of such a character as to render the application defective under 35 U.S.C. 112, examination should begin immediately with a requirement for corrected drawings and a rejection of the claims as not being in compliance with 35 U.S.C. 112(a) being made.

If the drawings have been indicated by the applicant as "informal," but the drawings are considered acceptable by OPAP, the examiner should not require replacement of the drawings. If the examiner does make objections to the drawings, the examiner should require correction in reply to the Office action and not permit the objection to be held in abeyance. See MPEP § 608.02(b), § 608.02(d) - § 608.02(h) and § 608.02(p) for further information on specific grounds for finding drawings informalities.

I. UNTIMELY FILED DRAWINGS

If a drawing is not timely received in reply to a notice from the Office or a letter from the examiner who requires a drawing, the application becomes abandoned for failure to reply.

For the handling of replacement drawings, see MPEP § 608.02(h).

37 C.F.R. 1.85 Corrections to drawings.

1. (a) A utility or plant application will not be placed on the files for examination until objections to the drawings have been corrected. Except as provided in § 1.215(c), any patent application publication will not include drawings filed after the application has been placed on the files for examination. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action (§ 1.135(c) ). If a drawing in a design application meets the requirements of § 1.84(e), (f), and (g) and is suitable for reproduction, but is not otherwise in compliance with § 1.84, the drawing may be admitted for examination.
2. (b) The Office will not release drawings for purposes of correction. If corrections are necessary, new corrected drawings must be submitted within the time set by the Office.
3. (c) If a corrected drawing is required or if a drawing does not comply with § 1.84 or an amended drawing submitted under § 1.121(d) in a nonprovisional international design application does not comply with § 1.1026 at the time an application is allowed, the Office may notify the applicant in a notice of allowability and set a three-month period of time from the mail date of the notice of allowability within which the applicant must file a corrected drawing in compliance with § 1.84 or 1.1026, as applicable, to avoid abandonment. This time period is not extendable under § 1.136 (see § 1.136(c) ).

In instances where the drawing is such that the prosecution can be carried on without the corrections, applicant is informed of the reasons why the drawing is objected to in an examiner’s action, and that the drawing is admitted for examination purposes only (see MPEP § 707.07(a)). To be fully responsive, an amendment must include corrected drawings. See 37 CFR 1.85(c) and 37 CFR 1.121(d). The objection to the drawings will not be held in abeyance.

I. ACCEPTABILITY OF DRAWINGS

The Office no longer considers drawings as formal or informal. Drawings are either acceptable or unacceptable. Drawings will be accepted by the Office of Patent Application Processing (OPAP) if the drawings are readable and reproducible for publication purposes. See MPEP § 507.

Examiners should review the drawings for disclosure of the claimed invention and for proper use of reference numerals. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance. A request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action (37 CFR 1.135(c) ). Drawing corrections should be made promptly before allowance of the application in order to avoid delays in issuance of the application as a patent or a reduction to any term adjustment. See 37 CFR 1.704(c)(10).

II. NOTIFYING APPLICANT

If the original drawings are unacceptable, applicant will be notified and informed of what the objections are and that new corrected drawings are required. In either case, the drawings will be accepted as satisfying the requirements of 37 CFR 1.51. The examiners are directed to advise the applicants (see MPEP § 707.07(a)) in the first Office action of the reasons why the drawings are unacceptable. If the examiner discovers a defect in the content of the drawing, one or more of the form paragraphs reproduced below may be used to notify applicant.

New corrected drawings in compliance with 37 CFR 1.121(d) are required in this application because [1]. Applicant is advised to employ the services of a competent patent draftsperson outside the Office, as the U.S. Patent and Trademark Office does not prepare new drawings. The corrected drawings are required in reply to the Office action to avoid abandonment of the application. The requirement for corrected drawings will not be held in abeyance.

The drawings are objected to because [1]. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as "amended." If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. In bracket 1, insert the reason for the objection, for example, --the drawings do not show every feature of the invention specified in the claims-- or --the unlabeled rectangular box(es) shown in the drawings should be provided with descriptive text labels--.

2. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

3. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

The drawings are not of sufficient quality to permit examination. Accordingly, replacement drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to this Office action. The replacement sheet(s) should be labeled "Replacement Sheet" in the page header (as per 37 CFR 1.84(c) ) so as not to obstruct any portion of the drawing figures. If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action.

Applicant is given a shortened statutory period of TWO (2) MONTHS to submit new drawings in compliance with 37 CFR 1.81. Extensions of time may be obtained under the provisions of 37 CFR 1.136(a) but in no case can any extension carry the date for reply to this letter beyond the maximum period of SIX MONTHS set by statute (35 U.S.C. 133 ). Failure to timely submit replacement drawing sheets will result in ABANDONMENT of the application.

Examiner Note:

1. Use of this form paragraph should be extremely rare and limited to those instances where no examination can be performed due to the poor quality of the drawings resulting in a lack of understanding of the claimed subject matter.

2. Use a PTOL-90 or PTO-90C form as a cover sheet for this communication.

In addition to Replacement Sheets containing the corrected drawing figure(s), applicant is required to submit a marked-up copy of each Replacement Sheet including annotations indicating the changes made to the previous version. The marked-up copy must be clearly labeled as "Annotated Sheet" and must be presented in the amendment or remarks section that explains the change(s) to the drawings. See 37 CFR 1.121(d)(1). Failure to timely submit the corrected drawing and marked-up copy will result in the abandonment of the application.

Examiner Note:

1. When this form paragraph is used by the examiner, the applicant must provide a marked-up copy of any amended drawing figure, including annotations indicating the changes made in the drawing replacement sheets. See 37 CFR 1.121(d)(2).

2. Applicants should be encouraged to submit corrected drawings before allowance in order to avoid having any term adjustment reduced pursuant to 37 CFR 1.704(c)(10).

III. HANDLING OF REPLACEMENT DRAWINGS

In those situations where an application is filed with unacceptable drawings, applicants will be notified by OPAP to file new acceptable drawings complying with 37 CFR 1.84 and 1.121(d) or 37 CFR 1.1026, as applicable. If the requirement for corrected drawings appears on the notice of allowability (PTOL-37), the drawings must be filed within three months of the date of mailing of the notice of allowability. Also, each sheet of the drawing should include the application number and the art unit in the upper center margin (37 CFR 1.84(c) ) and labeled, in the header, "Replacement Sheet."

In utility applications, the examination will normally be conducted using the originally presented drawings. The sufficiency of disclosure, as concerns the subject matter claimed, will be made by the examiner utilizing the original drawings. IT IS APPLICANT’S RESPONSIBILITY TO SEE THAT NO NEW MATTER IS ADDED when submitting replacement drawings after allowance since they will not normally be reviewed by an examiner. Of course, if the examiner notices new matter in the replacement drawings, appropriate action to have the new matter deleted should be undertaken.

Black and white line drawings submitted in: (i) provisional applications under 35 U.S.C. 111(b); (ii) nonprovisional utility patent applications under 35 U.S.C. 111(a), including reissue utility patent applications; (iii) international applications (PCT) and national stage applications under 35 U.S.C. 371; and (iv) reexamination proceedings for utility patents will be converted into TIFF images and stored in IFW.

Black and white line drawings in design applications, including reissue design patent applications, international design applications, and reexamination proceedings for design patents will be stored in a content management system, and a black and white copy will be placed in the file wrapper along with a placeholder sheet.

Black and white photographs and grayscale drawings in: (i) provisional applications under 35 U.S.C. 111(b); (ii) nonprovisional utility and design patent applications under 35 U.S.C. 111(a), including reissue utility and design patent applications; (iii) national stage applications under 35 U.S.C. 371; (iv) international applications (PCT); (v) international design applications; (vi) reexamination proceedings for utility patents and design patents; and (vii) supplemental examination proceedings will be stored in a content management system, and a black and white copy will be placed in the file wrapper along with a placeholder sheet.

Color drawings and color photographs are not permitted in international applications (see PCT Rule 11.13 ). Except for international applications, color photographs and color drawings in utility and design applications and proceedings will be stored in a content management system and a black and white copy thereof will be placed in the file wrapper along with a placeholder sheet.

Originally submitted drawings on paper that are photographs or in color may be maintained in an artifact folder.

37 C.F.R. 1.83 Content of drawing.

1. (a) The drawing in a nonprovisional application must show every feature of the invention specified in the claims. However, conventional features disclosed in the description and claims, where their detailed illustration is not essential for a proper understanding of the invention, should be illustrated in the drawing in the form of a graphical drawing symbol or a labeled representation (e.g., a labeled rectangular box). In addition, tables that are included in the specification and sequences that are included in sequence listings should not be duplicated in the drawings.
2. (b) When the invention consists of an improvement on an old machine the drawing must when possible exhibit, in one or more views, the improved portion itself, disconnected from the old structure, and also in another view, so much only of the old structure as will suffice to show the connection of the invention therewith.
3. (c) Where the drawings in a nonprovisional application do not comply with the requirements of paragraphs (a) and (b) of this section, the examiner shall require such additional illustration within a time period of not less than two months from the date of the sending of a notice thereof. Such corrections are subject to the requirements of § 1.81(d).

If an application filed under 35 U.S.C. 111 or under 35 U.S.C. 371 includes a sequence listing or a table, such a sequence listing or table should not be included in both the drawings and the descriptive portion of the specification. 37 CFR 1.83(a) and 1.58(a).

Any structural detail that is of sufficient importance to be described should be shown in the drawing. (Ex parte Good, 1911 C.D. 43, 164 OG 739 (Comm’r Pat. 1911).)

Form paragraph 6.22.01, 6.22.04, or 6.36, where appropriate, may be used to require illustration.

The drawings are objected to under 37 CFR 1.83(a) because they fail to show [1] as described in the specification. Any structural detail that is essential for a proper understanding of the disclosed invention should be shown in the drawing. MPEP § 608.02(d). Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as "amended." If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. In bracket 1, identify the structural details not shown in the drawings.

2. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

3. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

The drawings are objected to under 37 CFR 1.83(b) because they are incomplete. 37 CFR 1.83(b) reads as follows:

When the invention consists of an improvement on an old machine the drawing must when possible exhibit, in one or more views, the improved portion itself, disconnected from the old structure, and also in another view, so much only of the old structure as will suffice to show the connection of the invention therewith.

Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as "amended." If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. Supply a full explanation, if it is not readily apparent how the drawings are incomplete.

2. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

3. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in the claims. Therefore, the [1] must be shown or the feature(s) canceled from the claim(s). No new matter should be entered.

Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as "amended." If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

In bracket 1, insert the features that must be shown.

See also MPEP § 608.02.

The examiner should ensure that the figures are correctly described in the brief description of the several views of the drawing section of the specification, that the reference characters are properly applied, that no single reference character is used for two different parts or for a given part and a modification of such part, and that there are no superfluous illustrations.

One or more of the following form paragraphs may be used to require correction.

The drawings are objected to under 37 CFR 1.83(a) because they fail to show [1] as described in the specification. Any structural detail that is essential for a proper understanding of the disclosed invention should be shown in the drawing. MPEP § 608.02(d). Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as "amended." If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. In bracket 1, identify the structural details not shown in the drawings.

2. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

3. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

The drawings are objected to as failing to comply with 37 CFR 1.84(p)(4) because reference characters "[1]" and [2] have both been used to designate [3]. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. In brackets 1 and 2, identify the numbers which refer to the same part.

2. In bracket 3, identify the part which is referred to by different numbers.

3. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

4. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

The drawings are objected to as failing to comply with 37 CFR 1.84(p)(4) because reference character "[1]" has been used to designate both [2] and [3]. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet " or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. In bracket 1, identify the number which refers to the different parts.

2. In brackets 2 and 3, identify the parts which are referred to by the same number.

3. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

4. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they do not include the following reference sign(s) mentioned in the description: [1]. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. In bracket 1, specify the reference characters which are not found in the drawings, including the page and line number where they first occur in the specification.

2. This form paragraph may be modified to require or allow the applicant to delete the reference character(s) from the description instead of adding them to the drawing(s).

3. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

4. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they include the following reference character(s) not mentioned in the description: [1]. Corrected drawing sheets in compliance with 37 CFR 1.121(d), or amendment to the specification to add the reference character(s) in the description in compliance with 37 CFR 1.121(b) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d) If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. In bracket 1, specify the reference characters which are not found in the specification, including the figure in which they occur.

2. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

3. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

Modifications may not be shown in broken lines on figures which show in solid lines another form of the invention. Ex parte Badger, 1901 C.D. 195, 97 OG 1596 (Comm’r Pat. 1901).

All modifications described must be illustrated, or the text canceled. (Ex parte Peck, 1901 C.D. 136, 96 OG 2409 (Comm’r Pat. 1901).) This requirement does not apply to a mere reference to minor variations nor to well-known and conventional parts.

Form paragraph 6.22.05 may be used to require correction.

The drawings are objected to under 37 CFR 1.84(h)(5) because Figure [1] show(s) modified forms of construction in the same view. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as "amended." If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

Examiner Note:

1. In bracket 1, insert the appropriate Figure number(s).

2. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action. See 37 CFR 1.85(a).

3. This form paragraph may be followed by form paragraph 6.27 to require a marked up copy of the amended drawing figure(s) including annotations indicating the changes made in the corrected drawings.

Figures showing the prior art are usually unnecessary and should be canceled. Ex parte Elliott, 1904 C.D. 103, 109 OG 1337 (Comm’r Pat. 1904). However, where needed to understand applicant’s invention, they may be retained if designated by a legend such as "Prior Art."

If the prior art figure is not labeled, form paragraph 6.36.01 may be used.

Figure [1] should be designated by a legend such as --Prior Art-- because only that which is old is illustrated. See MPEP § 608.02(g). Corrected drawings in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. The replacement sheet(s) should be labeled "Replacement Sheet" in the page header (as per 37 CFR 1.84(c) ) so as not to obstruct any portion of the drawing figures. If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance.

All sheets of replacement drawings will be routinely entered into the contents of the application. However, the examiner should not overlook such factors as new matter, the necessity for the replacement sheets and consistency with other sheets. If the examiner decides that the sheets should not be entered, the examiner should provide the applicant with the complete, explicit reasoning for the denial of entry. The entries previously made will be marked "not entered."

Form paragraph 6.37 may be used to acknowledge replacement drawing sheets.

The drawings were received on [1]. These drawings are [2].

Examiner Note:

1. In bracket 2, insert either --acceptable-- or --unacceptable--.

2. Identify any drawing(s) not entered because they contain new matter and explain the correction(s) necessary to obtain entry upon resubmission.

3. If unacceptable because of noncompliance with 37 CFR 1.121(d), an explanation must be provided. Form PTOL-324 may be used instead of this form paragraph to provide the explanation.

Alternatively, PTOL-326 Office Action Summary includes a block for acknowledgment of replacement drawings.

When an amendment is filed stating that replacement sheets of drawings are filed with the amendment and such drawings are not in the IFW, in the next communication by the examiner, the applicant must be notified that replacement drawings do not appear to have been received and thus have not been entered in the application.

Note that drawings will not be returned to the applicant. See MPEP § 608.02(y).

Drawings cannot normally be transferred from a first pending application to another as the Office no longer considers drawings as formal or informal. Drawings that do not comply with all of the form requirements of 37 CFR 1.84 may be acceptable for the purposes of publication and examination if the drawings are readable and reproducible for publication purposes.

37 C.F.R. 1.121 Manner of making amendments in applications.

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1. (d) Drawings. One or more application drawings shall be amended in the following manner: Any changes to an application drawing must be in compliance with § 1.84 or, for a nonprovisional international design application, in compliance with §§ 1.84(c) and 1.1026 and must be submitted on a replacement sheet of drawings which shall be an attachment to the amendment document and, in the top margin, labeled "Replacement Sheet." Any replacement sheet of drawings shall include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is amended. Any new sheet of drawings containing an additional figure must be labeled in the top margin as "New Sheet." All changes to the drawings shall be explained, in detail, in either the drawing amendment or remarks section of the amendment paper.
   1. (1) A marked-up copy of any amended drawing figure, including annotations indicating the changes made, may be included. The marked-up copy must be clearly labeled as "Annotated Sheet" and must be presented in the amendment or remarks section that explains the change to the drawings.
   2. (2) A marked-up copy of any amended drawing figure, including annotations indicating the changes made, must be provided when required by the examiner.

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37 C.F.R. 1.85 Corrections to drawings.

1. (a) A utility or plant application will not be placed on the files for examination until objections to the drawings have been corrected. Except as provided in § 1.215(c), any patent application publication will not include drawings filed after the application has been placed on the files for examination. Unless applicant is otherwise notified in an Office action, objections to the drawings in a utility or plant application will not be held in abeyance, and a request to hold objections to the drawings in abeyance will not be considered a bona fide attempt to advance the application to final action (§ 1.135(c) ). If a drawing in a design application meets the requirements of § 1.84(e), (f), and (g) and is suitable for reproduction, but is not otherwise in compliance with § 1.84, the drawing may be admitted for examination.
2. (b) The Office will not release drawings for purposes of correction. If corrections are necessary, new corrected drawings must be submitted within the time set by the Office.
3. (c) If a corrected drawing is required or if a drawing does not comply with § 1.84 or an amended drawing submitted under § 1.121(d) in a nonprovisional international design application does not comply with § 1.1026 at the time an application is allowed, the Office may notify the applicant in a notice of allowability and set a three-month period of time from the mail date of the notice of allowability within which the applicant must file a corrected drawing in compliance with § 1.84 or 1.1026, as applicable, to avoid abandonment. This time period is not extendable under § 1.136 (see § 1.136(c) ).

See also MPEP § 608.02(b). For correction at allowance and issue, see MPEP § 608.02(w) and MPEP § 1302.05.

A canceled figure may be reinstated. An amendment should be made to the specification adding the brief description of the view if a canceled figure is reinstated.

The following form paragraphs may be used to notify applicants of drawing corrections.

The United States Patent and Trademark Office does not make drawing changes. It is applicant’s responsibility to ensure that the drawings are corrected. Corrections must be made in accordance with the instructions below.

Examiner Note:

This form paragraph is to be used whenever the applicant has filed a request for the Office to make drawing changes. Form paragraph 6.40 must follow.

INFORMATION ON HOW TO EFFECT DRAWING CHANGES

Replacement Drawing Sheets

Drawing changes must be made by presenting replacement sheets which incorporate the desired changes and which comply with 37 CFR 1.84. An explanation of the changes made must be presented either in the drawing amendments section, or remarks, section of the amendment paper. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either "Replacement Sheet" or "New Sheet" pursuant to 37 CFR 1.121(d). A replacement sheet must include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of the amended drawing(s) must not be labeled as "amended." If the changes to the drawing figure(s) are not accepted by the examiner, applicant will be notified of any required corrective action in the next Office action. No further drawing submission will be required, unless applicant is notified.

Identifying indicia, if provided, should include the title of the invention, inventor’s name, and application number, or docket number (if any) if an application number has not been assigned to the application. If this information is provided, it must be placed on the front of each sheet and within the top margin.

Annotated Drawing Sheets

A marked-up copy of any amended drawing figure, including annotations indicating the changes made, may be submitted or required by the examiner. The annotated drawing sheets must be clearly labeled as "Annotated Sheet" and must be presented in the amendment or remarks section that explains the change(s) to the drawings.

Timing of Corrections

Applicant is required to submit acceptable corrected drawings within the time period set in the Office action. See 37 CFR 1.85(a). Failure to take corrective action within the set period will result in ABANDONMENT of the application.

If corrected drawings are required in a Notice of Allowability (PTOL-37), the new drawings MUST be filed within the THREE MONTH shortened statutory period set for reply in the "Notice of Allowability." Extensions of time may NOT be obtained under the provisions of 37 CFR 1.136 for filing the corrected drawings after the mailing of a Notice of Allowability.

Applicant is reminded that the U.S. Patent and Trademark Office does not make drawing changes and that it is applicant’s responsibility to ensure that the drawings are corrected in accordance with the instructions set forth in the paper mailed on [1].

Examiner Note:

This form paragraph is to be used when the applicant has been previously provided with information on how to effect drawing changes.

Applicant is reminded that in order to avoid an abandonment of this application, the drawings must be corrected in accordance with the instructions set forth in the paper mailed on [1].

Examiner Note:

This form paragraph is to be used when allowing the application and when applicant has previously been provided with information on how to effect drawing changes.

The drawings filed on [1] are acceptable subject to correction of the informalities indicated below. In order to avoid abandonment of this application, correction is required in reply to the Office action. The correction will not be held in abeyance.

Examiner Note:

1. Use this form paragraph when allowing the application, particularly at time of first action issue. Supply an explanation of drawings informalities (see MPEP § 608.02(b), § 608.02(d) - § 608.02(h) and § 608.02(p)).

2. Form paragraph 6.40 or 6.41 must follow.

The following changes to the drawings have been approved by the examiner and agreed upon by applicant: [1]. In order to avoid abandonment of the application, applicant must make these agreed upon drawing changes.

Examiner Note:

1. In bracket 1, insert the agreed upon drawing changes.

2. Form paragraphs 6.39 and 6.40 must follow.

If a drawing figure is canceled, a replacement sheet of drawings must be submitted without the figure (see 37 CFR 1.121(d) ). If the canceled drawing figure was the only drawing on the sheet, then only a marked-up copy of the drawing sheet including an annotation showing that the drawing has been cancelled is required. The marked-up (annotated) copy must be clearly labeled as "Annotated Sheet" and must be presented in the amendment or remarks section of the amendment document which explains the changes to the drawings (see 37 CFR 1.121(d)(1) ). The brief description of the drawings should also be amended to reflect this change.

When changes are to be made in the drawing itself, other than mere changes in reference characters, designations of figures, or inking over lines pale and rough, a marked-up copy of the drawing should be filed with a replacement drawing. The marked-up copy must be clearly labeled as "Annotated Sheet." See 37 CFR 1.84(c) and 1.121(d). Ordinarily, broken lines may be changed to full without a sketch.

Annotated sheets filed by an applicant and used for correction of the drawing will not be returned. All such annotated sheets must be in ink or permanent prints.

Where an application is ready for issue except for a slight defect in the drawing not involving change in structure, the examiner will prepare a letter to the applicant indicating the change to be made and may include a marked-up copy of the drawing showing the addition or alteration to be made. The marked-up copy of the drawing should be attached to the letter to the applicant made of record in the application file.

As a guide to the examiner, the following corrections are illustrative of those that may be suggested without requiring annotated sheets from the applicant:

1. (A) Adding two or three reference characters or exponents.
2. (B) Changing one or two numerals or figure ordinals.
3. (C) Removing superfluous matter.
4. (D) Adding or reversing directional arrows.
5. (E) Changing Roman Numerals to Arabic Numerals to agree with specification.
6. (F) Adding section lines or brackets, where easily executed.
7. (G) Changing lead lines.
8. (H) Correcting misspelled legends.

Drawing corrections or changes will be entered at the time they are presented, unless applicant is notified to the contrary by the examiner in the action following the amended drawing submission.

CORRECTION OR CHANGE NOT ACCEPTED

Where the corrected or changed drawing is not accepted, for example, because the submitted corrections or changes are erroneous, or involve new matter or do not include all necessary corrections, the applicant will be notified and informed of any required corrective action in the next Office action. The examiner should explicitly and clearly set forth all the reasons for not approving the corrections to the drawings in the next communication to the applicant. See MPEP § 608.02(p) for suggested form paragraphs that may be used by examiners to notify applicants of drawing corrections.

Drawings will not be returned to the applicant.

If the drawings submitted in an application have been indicated by the applicant as "informal," but the drawings are considered acceptable by OPAP, the examiner should not require replacement of the drawings.

In IFW applications, generally, the most recently filed drawings will be used for printing, unless they have been indicated as "Not Entered."

If the examiner makes an objection to the drawings, the examiner should require correction in reply to the Office action that sets forth the objection. If an application is being allowed, and corrected drawings have not been filed, form PTOL-37 provides an appropriate check box for requiring corrected drawings.

Extensions of time to provide acceptable drawings in response to a notice of allowability are not permitted. If the Office of Data Management receives drawings that cannot be scanned or are otherwise unacceptable for publication, the Office of Data Management will mail a requirement for corrected drawings, giving applicant a shortened statutory period of two months to reply. The drawings will ordinarily not be returned to the examiner for corrections.

I. UTILITY PATENT APPLICATIONS RECEIVING REPLACEMENT DRAWINGS AFTER THE NOTICE OF ALLOWABILITY

Where replacement drawings are received in utility patent applications after the Notice of Allowability was mailed, the replacement drawings are handled by the Office of Data Management. Submission to the examiner is not necessary unless an amendment to the specification accompanies the drawings, such as an amendment where the description of figures is added or canceled. It is applicant’s responsibility to see that no new matter is added when submitting replacement drawings after allowance because they will not normally be reviewed by an examiner.

II. 37 CFR 1.312 AMENDMENTS

For information on handling amendments to drawings filed under 37 CFR 1.312, see MPEP § 714.16.