37 CFR § 1.570 - Issuance and publication of reexamination certificate concludes reexamination proceeding.

---
identifier: "/us/cfr/t37/s1.570"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "37 CFR § 1.570 - Issuance and publication of  reexamination certificate concludes  reexamination proceeding."
title_number: 37
title_name: "Patents, Trademarks, and Copyrights"
section_number: "1.570"
section_name: "Issuance and publication of  reexamination certificate concludes  reexamination proceeding."
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"
---


# 1.570 Issuance and publication of  reexamination certificate concludes  reexamination proceeding.

(a) To conclude an *ex parte* reexamination proceeding, the Director will issue and publish an *ex parte* reexamination certificate in accordance with 35 U.S.C. 307 setting forth the results of the *ex parte* reexamination proceeding and the content of the patent following the *ex parte* reexamination proceeding.

(b) An *ex parte* reexamination certificate will be issued and published in each patent in which an *ex parte* reexamination proceeding has been ordered under § 1.525 and has not been merged with any *inter partes* reexamination proceeding pursuant to § 1.989(a). Any statutory disclaimer filed by the patent owner will be made part of the *ex parte* reexamination certificate.

(c) The *ex parte* reexamination certificate will be mailed on the day of its date to the patent owner at the address as provided for in § 1.33(c). A copy of the *ex parte* reexamination certificate will also be mailed to the requester of the *ex parte* reexamination proceeding.

(d) If an *ex parte* reexamination certificate has been issued and published which cancels all of the claims of the patent, no further Office proceedings will be conducted with that patent or any reissue applications or any reexamination requests relating thereto.

(e) If the *ex parte* reexamination proceeding is terminated by the grant of a reissued patent as provided in § 1.565(d), the reissued patent will constitute the *ex parte* reexamination certificate required by this section and 35 U.S.C. 307.

(f) A notice of the issuance of each *ex parte* reexamination certificate under this section will be published in the *Official Gazette* on its date of issuance.

[65 FR 76777, Dec. 7, 2000, as amended at 72 FR 18905, Apr. 16, 2007]