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Title 37

Displaying title 37, up to date as of 8/12/2026. Title 37 was last amended 7/20/2026.
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  1. Title 37 —Patents, Trademarks, and Copyrights
  2. Chapter I —United States Patent and Trademark Office, Department of Commerce
  3. Subchapter A —General
  4. Part 1 —Rules of Practice in Patent Cases
  5. Subpart C   View Full Text
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eCFR Content

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Title 37Patents, Trademarks, and CopyrightsPart / Section
Chapter IUnited States Patent and Trademark Office, Department of Commerce1 – 199
Subchapter AGeneral1 – 90
Part 1Rules of Practice in Patent Cases1.1 – 1.1071
Subpart CInternational Processing Provisions1.401 – 1.499
General Information1.401 – 1.419
§ 1.401Definitions of terms under the Patent Cooperation Treaty.
§ 1.412The United States Receiving Office.
§ 1.413The United States International Searching Authority.
§ 1.414The United States Patent and Trademark Office as a Designated Office or Elected Office.
§ 1.415The International Bureau.
§ 1.416The United States International Preliminary Examining Authority.
§ 1.417Submission of translation of international publication.
§ 1.419Display of currently valid control number under the Paperwork Reduction Act.
Who May File an International Application1.421 – 1.424
§ 1.421Applicant for international application.
§ 1.422Legal representative as applicant in an international application.
§ 1.423 [Reserved]
§ 1.424Assignee, obligated assignee, or person having sufficient proprietary interest as applicant in an international application.
The International Application1.431 – 1.438
§ 1.431International application requirements.
§ 1.432Designation of States by filing an international application.
§ 1.433Physical requirements of international application.
§ 1.434The request.
§ 1.435The description.
§ 1.436The claims.
§ 1.437The drawings.
§ 1.438The abstract.
Fees1.445 – 1.446
§ 1.445International application filing, processing and search fees.
§ 1.446Refund of international application filing and processing fees.
Priority1.451 – 1.453
§ 1.451The priority claim and priority document in an international application.
§ 1.452Restoration of right of priority.
§ 1.453Transmittal of documents relating to earlier search or classification.
Representation1.455
§ 1.455Representation in international applications.
Transmittal of Record Copy1.461
§ 1.461Procedures for transmittal of record copy to the International Bureau.
Timing1.465 – 1.468
§ 1.465Timing of application processing based on the priority date.
§ 1.468Delays in meeting time limits.
Amendments1.471 – 1.472
§ 1.471Corrections and amendments during international processing.
§ 1.472Changes in person, name, or address of applicants and inventors.
Unity of Invention1.475 – 1.477
§ 1.475Unity of invention before the International Searching Authority, the International Preliminary Examining Authority and during the national stage.
§ 1.476Determination of unity of invention before the International Searching Authority.
§ 1.477Protest to lack of unity of invention before the International Searching Authority.
International Preliminary Examination1.480 – 1.489
§ 1.480Demand for international preliminary examination.
§ 1.481Payment of international preliminary examination fees.
§ 1.482International preliminary examination and processing fees.
§ 1.484Conduct of international preliminary examination.
§ 1.485Amendments by applicant during international preliminary examination.
§ 1.488Determination of unity of invention before the International Preliminary Examining Authority.
§ 1.489Protest to lack of unity of invention before the International Preliminary Examining Authority.
National Stage1.491 – 1.499
§ 1.491National stage commencement, entry, and fulfillment.
§ 1.492National stage fees.
§ 1.495Entering the national stage in the United States of America.
§ 1.496Examination of international applications in the national stage.
§ 1.497Inventor's oath or declaration under 35 U.S.C. 371(c)(4).
§ 1.499Unity of invention during the national stage.
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