---
kind: "unit"
title: "37"
title_heading: "Patents, Trademarks, and Copyrights"
key: "chI/subchA/part1/subpartC"
level: "subpart"
label: "Subpart C"
heading: "International Processing Provisions"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/37/chI-subchA-part1-subpartC"
sections_count: 47
---

# Subpart C — International Processing Provisions

Title 37 C.F.R. — Patents, Trademarks, and Copyrights › Chapter I — United States Patent and Trademark Office, Department of Commerce › Subchapter A — General › Part 1 — Rules of Practice in Patent Cases

## Sections

- [§1.401. Definitions of terms under the Patent Cooperation Treaty.](/cfr/37/1.401.md)
- [§1.412. The United States Receiving Office.](/cfr/37/1.412.md)
- [§1.413. The United States International Searching Authority.](/cfr/37/1.413.md)
- [§1.414. The United States Patent and Trademark Office as a Designated Office or Elected Office.](/cfr/37/1.414.md)
- [§1.415. The International Bureau.](/cfr/37/1.415.md)
- [§1.416. The United States International Preliminary Examining Authority.](/cfr/37/1.416.md)
- [§1.417. Submission of translation of international publication.](/cfr/37/1.417.md)
- [§1.419. Display of currently valid control number under the Paperwork Reduction Act.](/cfr/37/1.419.md)
- [§1.421. Applicant for international application.](/cfr/37/1.421.md)
- [§1.422. Legal representative as applicant in an international application.](/cfr/37/1.422.md)
- [§1.423. Reserved](/cfr/37/1.423.md)
- [§1.424. Assignee, obligated assignee, or person having sufficient proprietary interest as applicant in an international application.](/cfr/37/1.424.md)
- [§1.431. International application requirements.](/cfr/37/1.431.md)
- [§1.432. Designation of States by filing an international application.](/cfr/37/1.432.md)
- [§1.433. Physical requirements of international application.](/cfr/37/1.433.md)
- [§1.434. The request.](/cfr/37/1.434.md)
- [§1.435. The description.](/cfr/37/1.435.md)
- [§1.436. The claims.](/cfr/37/1.436.md)
- [§1.437. The drawings.](/cfr/37/1.437.md)
- [§1.438. The abstract.](/cfr/37/1.438.md)
- [§1.445. International application filing, processing and search fees.](/cfr/37/1.445.md)
- [§1.446. Refund of international application filing and processing fees.](/cfr/37/1.446.md)
- [§1.451. The priority claim and priority document in an international application.](/cfr/37/1.451.md)
- [§1.452. Restoration of right of priority.](/cfr/37/1.452.md)
- [§1.453. Transmittal of documents relating to earlier search or classification.](/cfr/37/1.453.md)
- [§1.455. Representation in international applications.](/cfr/37/1.455.md)
- [§1.461. Procedures for transmittal of record copy to the International Bureau.](/cfr/37/1.461.md)
- [§1.465. Timing of application processing based on the priority date.](/cfr/37/1.465.md)
- [§1.468. Delays in meeting time limits.](/cfr/37/1.468.md)
- [§1.471. Corrections and amendments during international processing.](/cfr/37/1.471.md)
- [§1.472. Changes in person, name, or address of applicants and inventors.](/cfr/37/1.472.md)
- [§1.475. Unity of invention before the International Searching Authority, the International Preliminary Examining Authority and during the national stage.](/cfr/37/1.475.md)
- [§1.476. Determination of unity of invention before the International Searching Authority.](/cfr/37/1.476.md)
- [§1.477. Protest to lack of unity of invention before the International Searching Authority.](/cfr/37/1.477.md)
- [§1.480. Demand for international preliminary examination.](/cfr/37/1.480.md)
- [§1.481. Payment of international preliminary examination fees.](/cfr/37/1.481.md)
- [§1.482. International preliminary examination and processing fees.](/cfr/37/1.482.md)
- [§1.484. Conduct of international preliminary examination.](/cfr/37/1.484.md)
- [§1.485. Amendments by applicant during international preliminary examination.](/cfr/37/1.485.md)
- [§1.488. Determination of unity of invention before the International Preliminary Examining Authority.](/cfr/37/1.488.md)
- [§1.489. Protest to lack of unity of invention before the International Preliminary Examining Authority.](/cfr/37/1.489.md)
- [§1.491. National stage commencement, entry, and fulfillment.](/cfr/37/1.491.md)
- [§1.492. National stage fees.](/cfr/37/1.492.md)
- [§1.495. Entering the national stage in the United States of America.](/cfr/37/1.495.md)
- [§1.496. Examination of international applications in the national stage.](/cfr/37/1.496.md)
- [§1.497. Inventor's oath or declaration under 35 U.S.C. 371(c)(4).](/cfr/37/1.497.md)
- [§1.499. Unity of invention during the national stage.](/cfr/37/1.499.md)