E-I-M Company, Inc. appeals from an order holding it in civil contempt of an injunction previously issued by the district court restraining its further infringement of the Ball patent No. 2,114,013, issued April 12, 1938, for a “Valve Operator,” which patent is owned by appellee. The prior judgment upon which the injunction was based, held claim 2 of the Ball patent valid and infringed, and that decision was subsequently affirmed by this Court. See E.I.M. Co., Inc., v. Philadelphia Gear Works, Inc., D.C.,
*38 Appellant’s modified CS device, like the previously adjudicated PP structure and the mechanism of the Ball patent, are all devices for opening and closing *39 large pipe line valves in oil and gas fields, each being actuated optionally either by an electric motor or manually by means of a hand wheel. Though identical in purpose and result accomplished, these three devices exhibit specific divergencies in physical structure and methods of operation, the material details of which have already been explained in the above cited and quoted decisions of the district court and this Court. In amplification, however, of the district court’s decision presently under review [Footnote (1), supra], it should be stated that the only material structural difference between appellant’s modified CS type valve operator and its old infringing PP structure is a clutch actuated by a centrifugal flyball mechanism, the latter distinctive element having been to some extent copied from the expired Jones prior art patent, U. S. No. 1,864,653, and substituted in lieu of the hydraulic clutch mechanism of its predecessor PP device heretofore held to infringe, as the substantial mechanical equivalent of the “clutch detent mechanism” revealed by appellee s Ball patent. Since it appears that the remaining elements of the adjudicated PP valve operator and the Ball patent, or their full mechanical equivalents, are clearly present in appellant s modified CS structure, the only really substantial controversy on the issue of equivalency thus narrows to whether the revised CS clutch assembly, generally referred to by the district court as_ the clutch detaining, releasing and shifting mechanism, even though not literally present in the old infringing PP device or the Ball patent, may nevertheless fairly be viewed as “the full equiyalent of that previously used in the adjudicated structure,” since “it functions in the same manner to produce the same result.” [See Findings Nos. 5, 6, and 9, and Conclusions 1 and 3, Footnote (1), supra.] Incidentally presented are the remaining issues of whether the district court erred in this contempt proceeding in refusing again to review the prior art, and particularly the expired Jones patent, for the avowed purpose of showing that appellant’s presently accused CS structure was actually copied therefrom, rather than from the Ball patent or appellant’s adjudicated PP device: and, finally, whether the district court was justified in assessing double damages, under its heretofore quoted Finding No. 9 and Conclusion No. 4, as to the willful and deliberate character of appellant’s present infringement in violation of the prior injunction.
While conceding that it was not entitled below to rehash the entire prior art for the purpose of invalidating appellee’s Ball patent, the validity of which has already been upheld on the prior appea]j
Relying upon Judge Hutcheson’s opinion for this Court in Patton v. Stone, 5 Cir.,
We think the district court was justified in its factual finding of equivalence between appellant’s modified CS structure and the heretofore adjudicated PP device. In support of Finding No. 6, the record contains convincing testimony by appellee’s witnesses, Kron and Panish, based upon actual tests, that the clutch of appellant’s presently manufactured CS device actually functions more effectively as a “detent mechanism”, i. e. to hold, release and shift the clutch, than the hydraulic detent mechanism of the adjudicated PP structure already held to infringe the Ball patent. In fact, as the district court observed, the presently accused CS clutch mechanism is structurally even more closely akin to the Ball patent than its infringing PP predecessor device, since, it exhibits a lever and spring combination, and for all practical purposes is actuated more positively by mechanical rather than by hydraulic means. In- any event, accepting the no longer debatable premise that the hydraulic detent mechanism of appellant’s PP valve operator was “the full equivalent of the clutch detent mechanism of the Ball patent”,
We think appellant’s vigorous insistence, that it was prejudiced by the district court’s claimed refusal to consider the Jones prior art patent, as bearing upon its contention that its CS device now follows Jones instead of Ball, is neither fairly supported by this record or by the authorities upon which it relies. True, the district court several times indicated its impression that, validity of the Ball patent having already been upheld, appellant was not entitled to a practically de novo review of the entire prior art, on the controlling issue of equivalency between the modified and adjudicated structures in this contempt proceeding. However, the court did several times permit appellant’s counsel to elicit testimony in support of its contention that the clutch mechanism of its modified CS device follows the teachings of Jones instead of Ball, though its remarks and final decision leave no doubt that it did not regard the argument with much favor. In any event, practically all of the authorities upon which appellant relies, [see footnote (2), supra] may be distinguished generally on the ground that they involved elements of estoppel against a party to dispute the validity of a particular patent arising from an assignment or license, and in none of them had there already been a binding judicial determination, as here, of the validity of the particular patent involved.
We concede that, in a proper case, an alleged infringer already under injunctive restraint, who is cited for contempt, should not be prohibited from making a real showing that its modified structure actually constitutes a substantial departure from, rather than a mere colorable variant of, a previously manufactured device already held to infringe. Ordinarily, we think it would be the better practice for the district court in such instance to consider any particular prior art patent or patents from which the modified structure claims to be derived, not on the settled issue of validity, but solely on the crucial question of equivalency between the modified and adjudicated structures. See Patton v. Stone, supra,
We also reject as without merit appellant’s insistence that equivalency, in fact, within the prohibition of the prior injunction, may not here exist because of appellee’s own representations upon the prior appeal that Jones was “foreign to the patented invention of Ball”, and operated on a “wholly different principle”, as well as the further suggestion that factual equivalency is precluded as a matter of law because of the former decisions of the district court and this Court upholding the validity of the Ball patent as not anticipated by Jones. While we accept the inherent logic of a paraphrased geometric theorem, i. e., that “things
not
equal to the same thing are
not
equal to each other”, we deny its application by analogy as a principle of patent law operative in appellant’s favor here, insofar as appellant seeks, on principles of judicial and file wrapper estoppel or otherwise, to show such a degree of similarity between its modified CS structure and the non-anticipatory Jones device as would effectively
*42
and logically preclude, as inconsistent, that requisite degree of equivalency between the CS operator and the old infringing PP structure essential to sustain the findings below. Cf. Jeoffroy Mfg., Inc. v. Graham, supra; Union Carbide & Carbon Corp. v. Graver Tank & Mfg. Co., 7 Cir.,
Finally, if we were permitted to review independently of the district court’s findings the issue of whether appellant’s present infringement was “willful and deliberate,” we might ourselves conclude that the prior course of this litigation and-the Jones patent furnish a reasonable basis for a good faith belief that appellant was entitled to manufacture its presently accused CS structure, and that in doing so, it was guilty of no such conscious disregard of the prior injunction as would justify imposition of punitive damages under 35 U.S.C.A. § 284. See Enterprise Mfg. Co. v. Shapespeare Co., 6 Cir.,
The judgment is, therefore, modified so as to eliminate that portion decreeing that the present infringement has been willful and deliberate and, as so modified, it is affirmed. Costs are taxed against appellant.
Modified and affirmed.
Notes
. Findings of Fact
“1.
“On February 11, 1952 a judgment was entered by this Court holding that claim 2 of Ball patent No. 2,114,013 was valid and infringed by plaintiff, E.I.M. Company, Inc., said judgment containing the foEowing injunction:
“ ‘7. Plaintiff, E.I.M. Company, Inc., its officers, agents, servants and employees and those persons and organizations in active concert of participation with it are hereby restrained and enjoined until April 12, 1955 from directly or indirectly infringing Claim 2 of United States Letters Patent No. 2,114,013 by making, using or selling, or causing to bo *38 made, used or sold, without license, valve controls embodying the element of said patent claim and as illustrated in Joint Exhibits I and II of Stipulation A, or any substantial equivalents thereof.' (Emphasis ours.)
“2.
“Although an appeal was taken by E.I. M. from the aforesaid judgment of this Court, the appeal resulting in an affirmance, E.I.M. did not file a supersedeas bond, nor did it take any steps to stay or vacate the injunction, and the same has been in full force and effect since the entry of judgment on February 11, 1952.
“3.
“Since February 11, 1952 plaintiff has made and sold new valve controls of the character illustrated and described in its Bulletin E-852. One of its new valve controls, model CS-TM described in the aforesaid bulletin, is shown in detailed perspective in a drawing marked Defendant’s Exhibit C-3.
“4.
“The first five elements set forth in claim 2 of the Ball patent (these being designated by the colors brown, yellow, red, blue and orange in the drawings in evidence) are not only present in the new E.I.M. valve controls, but these parts are either identical to those used in the adjudicated structure, or else involve only minor changes in shape or proportions therefrom.
“5.
“For all practical purposes the clutch of the new E.I.M. structure, as in the adjudicated structure, is maintained and secured in active engagement with the manually operated means until it is released by the power-driven mechanism.
“6.
“The clutch detaining, releasing and shifting mechanism (designated by the color green in the drawings in evidence) of the new E.I.M. structure is the full equivalent of that previously used in the adjudicated structure. It functions in the same manner to produce the same result. Such mechanism is even closer to the mechanism shown in the Ball patent than was that of the adjudicated structure since it involves a lever and spring combination, since it is wholly mechanical, not hydraulic, and since it functions more accurately and more positively to hold, release and shift the clutch than the mechanism formerly used.
“7.
“The new E.I.M. valve controls respond in all respects to the definition of Ball’s claim of invention, as well as to the statements of the objects and advantages of said invention set forth in the opinion of the Court of Appeals [5 Cir.],
“8.
“As may be seen from a comparison of the tables of dimensions found in the old and new E.I.M. bulletins, no significant change has been made in the dimensions of the new valve controls. They so closely resemble the adjudicated device in their physical external appearance that E.I. M. still uses the same outline drawing to represent them in its current bulletin. The critical mounting dimensions (number of bolts, holes, threads, etc.) are unchanged. Hence the new valve controls, are interchangeable with the old valve controls and with the ‘Limitorque’ controls made and sold by Philadelphia.
“9.
“I further find as a fact that the device complained of in this contempt proceeding is substantially equivalent to the adjudicated structure and that the infringement of such adjudicated structure was willful and deliberate.
“Conclusions of Law.
“1.
“The valve control illustrated and described in E.I.M. Bulletin B-852 is a substantial equivalent, in relation to claim 2 of the Ball patent, of the hydraulic valve control illustrated in Joint Exhibits I and II of the trial exhibits and previously adjudged to infringe said patent.
“2.
“By reason of its manufacture and sale of the aforesaid valve control, shown in its Bulletin E-852, since February 11, 1952, plaintiff has infringed Ball Patent No. 2,114,013 and has violated the injunction of this Court.
“3.
“I find as a matter of law that the device complained of in this contempt proceeding is substantially equivalent to the adjudicated structure.
“4.
“Defendant is entitled to recover double the amount of damages suffered by it as a result of E.I.M.’s wilful infringement of the Ball patent subsequent to the injunction, as well as all costs incurred by it in bringing this motion, including a reasonable attorney’s fee.
“The Clerk will notify counsel.
“Allen B. Hannay,
“United States District Judge.”
. Principally, Westinghouse Electric & Mfg. Co. v. Formica Insulation Co.,
. United States Rubber Co. v. General Tire & Rubber Co., 6 Cir.,
