Code of Federal Regulations > Title 37 > Chapter I > Part 1 > Subpart A - Subpart A—General Provisions

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

GENERAL INFORMATION AND CORRESPONDENCE

§ 1.1 - Addresses for non-trademark correspondence with the United States Patent and Trademark Office.

§ 1.2 - Business to be transacted in writing.

§ 1.3 - Business to be conducted with decorum and courtesy.

§ 1.4 - Nature of correspondence and signature requirements.

§ 1.5 - Identification of patent, patent application, or patent-related proceeding.

§ 1.6 - Receipt of correspondence.

§ 1.7 - Times for taking action; Expiration on Saturday, Sunday or Federal holiday.

§ 1.8 - Certificate of mailing or transmission.

§ 1.9 - Definitions.

§ 1.10 - Filing of correspondence by Priority Mail Express®.

RECORDS AND FILES OF THE PATENT AND TRADEMARK OFFICE

§ 1.11 - Files open to the public.

§ 1.12 - Assignment records open to public inspection.

§ 1.13 - Copies and certified copies.

§ 1.14 - Patent applications preserved in confidence.

§ 1.15 - [Reserved]

FEES AND PAYMENT OF MONEY

§ 1.16 - National application filing, search, and examination fees.

§ 1.17 - Patent application and reexamination processing fees.

§ 1.18 - Patent post allowance (including issue) fees.

§ 1.19 - Document supply fees.

§ 1.20 - Post-issuance fees.

§ 1.21 - Miscellaneous fees and charges.

§ 1.22 - Fees payable in advance.

§ 1.23 - Methods of payment.

§ 1.24 - [Reserved]

§ 1.25 - Deposit accounts.

§ 1.26 - Refunds.

§ 1.27 - Definition of small entities and establishing status as a small entity to permit payment of small entity fees; when a determination of entitlement to small entity status and notification of loss of entitlement to small entity status are required; fraud on the Office.

§ 1.28 - Refunds when small entity status is later established; how errors in small entity status are excused.

§ 1.29 - Micro entity status.