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Manual of Patent Examining Procedure (MPEP)

Chapter 1800

Patent Cooperation Treaty

United States Patent and Trademark Office

1801Basic Patent Cooperation Treaty (PCT) Principles 1802PCT Definitions 1803Reservations Under the PCT Taken by, and Notifications of Incompatibility Made by, the United States of America 1804[Reserved]1805Where To File an International Application 1806Applicants and Inventors 1807Agent or Common Representative and General Power of Attorney 1808Change in or Revocation of the Appointment of an Agent or a Common Representative 1809Access to the USPTO patent electronic filing system 1810Filing Date Requirements 1811[Reserved]1812Elements of the International Application 18131816 - [Reserved]1817PCT Member States 1818[Reserved]1819Earlier Search 1820Signature of Applicant 1821The Request 1822[Reserved]1823The Description 1824The Claims 1825The Drawings 1826The Abstract 1827Fees 1828Priority Claim and Document 1829[Reserved]1830International Application Transmittal Letter 1831[Reserved]1832License Request for Foreign Filing Under the PCT 1833[Reserved]1834Correspondence 1835[Reserved]1836Rectification of Obvious Mistakes 18371839 - [Reserved]1840The International Searching Authority 1841[Reserved]1842Basic Flow Under the PCT 1843The International Search 1844The International Search Report 1845Written Opinion of the International Searching Authority 18461847 - [Reserved]1848Sequence Listings 1849[Reserved]1850Unity of Invention Before the International Searching Authority 1851Identification of Patent Documents 1852Taking Into Account Results of Earlier Search(es)1853Amendment Under PCT Article 19 18541855 - [Reserved]1856Supplementary International Searches 1857International Publication 1858[Reserved]1859Withdrawal of International Application, Designations, or Priority Claims 1860International Preliminary Examination Procedure 1861[Reserved]1862Agreement With the International Bureau To Serve as an International Preliminary Examining Authority 1863[Reserved]1864The Demand and Preparation for Filing of Demand 1865Filing of Demand 1866[Reserved]1867Preliminary Examination Fees 1868Correction of Defects in the Demand 1869Notification to International Bureau of Demand 1870Priority Document and Translation Thereof 1871Processing Amendments Filed Under Article 19 and Article 34 Prior to or at the Start of International Preliminary Examination 1872Availability of the International Application File for International Preliminary Examination by the Examining Corps 1873[Reserved]1874Determination if International Preliminary Examination Is Required and Possible 1875Unity of Invention Before the International Preliminary Examining Authority 1876Notation of Errors and Informalities by the Examiner 1877Nucleotide and/or Amino Acid Sequence Listings During the International Preliminary Examination 1878Preparation of the Written Opinion of the International Preliminary Examining Authority 1879Preparation of the International Preliminary Examination Report 1880Withdrawal of Demand or Election 1881Receipt of Notice of Election and Preliminary Examination Report by the United States Patent and Trademark Office 18821892 - [Reserved]1893National Stage (U.S. National Application Filed Under 35 U.S.C. 371)1894[Reserved]1895A Continuation, Divisional, or Continuation- in- Part Application of a PCT Application Designating the United States 1896The Differences Between a National Application Filed Under 35 U.S.C. 111(a) and a National Stage Application Submitted Under 35 U.S.C. 371