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Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-06 10:51:44 -04:00

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---
type: "LegalText"
title: "35 U.S.C. § 255"
description: "Certificate of correction of applicants mistake"
jurisdiction: "us"
corpus: "united_states_code"
kind: "code_section"
title_number: 35
title_name: "PATENTS"
chapter_number: "25"
chapter_name: "AMENDMENT AND CORRECTION OF PATENTS"
section: "255"
citation: "35 U.S.C. § 255"
status: "current"
release_point: "119-100"
release_date: "2026-06-26"
source: "official"
source_url: "https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc35@119-100.zip"
source_identifier: "/us/usc/t35/s255"
source_file: "data/legal/raw/us/code/title-35/usc35.xml"
source_hash: "bc6faae894225155617638e138c09f492abe6602aad42059cd83cc623183d2d1"
raw_snapshot_hash: "736cab508592dcf50013a1aed5ab108f72fd8493e76afc46848cdc35da38bbe3"
text_hash: "d999a3c9caeeb24410ec3182d57228254171aa8bb2240da6dc5ce12390a365b4"
retrieved_at: "2026-07-04"
confidence: "official"
tags: ["legal", "us-code"]
---
# 35 U.S.C. § 255 - Certificate of correction of applicants mistake
## Text
Whenever a mistake of a clerical or typographical nature, or of minor character, which was not the fault of the Patent and Trademark Office, appears in a patent and a showing has been made that such mistake occurred in good faith, the Director may, upon payment of the required fee, issue a certificate of correction, if the correction does not involve such changes in the patent as would constitute new matter or would require re-examination. Such patent, together with the certificate, shall have the same effect and operation in law on the trial of actions for causes thereafter arising as if the same had been originally issued in such corrected form.
(July 19, 1952, ch. 950, 66 Stat. 809; Pub. L. 93596, § 1, Jan. 2, 1975, 88 Stat. 1949; Pub. L. 106113, div. B, § 1000(a)(9) [title IV, § 4732(a)(10)(A)], Nov. 29, 1999, 113 Stat. 1536, 1501A582; Pub. L. 107273, div. C, title III, § 13206(b)(1)(B), Nov. 2, 2002, 116 Stat. 1906.)
## Notes
Historical and Revision NotesThis section providing for the correction of minor clerical errors made by the applicant, is new and follows a similar provision in the trade-mark law, 15 U.S.C., 1946 ed., § 1057(g).
Editorial Notes
Amendments2002—Pub. L. 107273 made technical correction to directory language of Pub. L. 106113. See 1999 Amendment note below. 1999—Pub. L. 106113, as amended by Pub. L. 107273, substituted “Director” for “Commissioner”. 1975—Pub. L. 93596 substituted “Patent and Trademark Office” for “Patent Office”.
Statutory Notes and Related Subsidiaries
Effective Date of 1999 AmendmentAmendment by Pub. L. 106113 effective 4 months after Nov. 29, 1999, see section 1000(a)(9) [title IV, § 4731] of Pub. L. 106113, set out as a note under section 1 of this title.
Effective Date of 1975 AmendmentAmendment by Pub. L. 93596 effective Jan. 2, 1975, see section 4 of Pub. L. 93596, set out as a note under section 1111 of Title 15, Commerce and Trade.