Site Feedback

Website Feedback

This contact form is only for website help or website suggestions. If you have questions or comments regarding a published document please contact the publishing agency. Comments or questions about document content can not be answered by OFR staff. Please do not provide confidential information or personal data.

Title 37

This content is from the eCFR and is authoritative but unofficial.

Displaying title 37, up to date as of 10/06/2026. Title 37 was last amended 8/26/2026.
view historical versions
New Finding Aids are now available on eCFR.gov. The Parallel Table of Authorities, Subject Index, and Agency-prepared Indexes are now online! Learn more
  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 41 —Practice Before the Patent Trial and Appeal Board
  5. Subpart D —Contested Cases
  6. § 41.110
  • Table of Contents
  • Details
  • Print/PDF
  • Display Options
  • Subscribe
  • Timeline
  • Go to Date
  • Compare Dates
  • Published Edition
  • Developer Tools
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

Editorial Note on Subchapter A of Chapter I

Editorial Note:

Part 2 is placed in the separate grouping of parts pertaining to trademarks regulations.

Editorial Note on Subchapter A of Chapter I

Editorial Note:

Part 6 is placed in the separate grouping of parts pertaining to trademarks regulations.

Editorial Note on Subchapter A of Chapter I

Editorial Note:

Part 7 is placed in the separate grouping of parts pertaining to trademarks regulations.

Editorial Note on Subchapter A of Chapter I

Editorial Note:

Part 1 is placed in the separate grouping of parts pertaining to patents regulations.

Editorial Note on Subchapter A of Chapter I

Editorial Note:

Part 3 pertaining to both patents and trademarks is placed in the grouping pertaining to patents regulations.

Editorial Note on Subchapter A of Chapter I

Editorial Note:

Part 4 is placed in the separate grouping of parts pertaining to patents regulations.

Editorial Note on Subchapter A of Chapter I

Editorial Note:

Part 5 is placed in the separate grouping of parts pertaining to patents regulations.

§ 41.110 Filing claim information.

(a) Clean copy of claims. Within 14 days of the initiation of the proceeding, each party must file a clean copy of its involved claims and, if a biotechnology material sequence is a limitation, a clean copy of the sequence.

(b) Annotated copy of claims. Within 28 days of the initiation of the proceeding, each party must:

(1) For each involved claim having a limitation that is illustrated in a drawing or biotechnology material sequence, file an annotated copy of the claim indicating in bold face between braces ({ }) where each limitation is shown in the drawing or sequence.

(2) For each involved claim that contains a means-plus-function or step-plus-function limitation in the form permitted under 35 U.S.C. 112(f), file an annotated copy of the claim indicating in bold face between braces ({ }) the specific portions of the specification that describe the structure, material, or acts corresponding to each claimed function.

(c) Any motion to add or amend a claim must include:

(1) A clean copy of the claim,

(2) A claim chart showing where the disclosure of the patent or application provides written description of the subject matter of the claim, and

(3) Where applicable, a copy of the claims annotated according to paragraph (b) of this section.

[69 FR 50003, Aug. 12, 2004, as amended at 77 FR 46631, Aug. 6, 2012]

eCFR Content