37 CFR § 1.323 - Certificate of correction of applicant's mistake.

---
identifier: "/us/cfr/t37/s1.323"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "37 CFR § 1.323 - Certificate of correction of applicant's mistake."
title_number: 37
title_name: "Patents, Trademarks, and Copyrights"
section_number: "1.323"
section_name: "Certificate of correction of applicant's mistake."
chapter_name: "UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE"
subchapter_number: "A"
subchapter_name: "GENERAL"
part_number: "1"
part_name: "RULES OF PRACTICE IN PATENT CASES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "35 U.S.C. 2(b)(2), unless otherwise noted."
regulatory_source: "24 FR 10332, Dec. 22, 1959, unless otherwise noted."
cfr_part: "1"
---


# 1.323 Certificate of correction of applicant's mistake.

The Office may issue a certificate of correction under the conditions specified in 35 U.S.C. 255 at the request of the patentee or the patentee's assignee, upon payment of the fee set forth in § 1.20(a). If the request relates to a patent involved in an interference or trial before the Patent Trial and Appeal Board, the request must comply with the requirements of this section and be accompanied by a motion under § 41.121(a)(2), § 41.121(a)(3) or § 42.20 of this title.

[77 FR 46626, Aug. 6, 2012]