37 CFR 1.501 - Citation of prior art in patent files.

Status message

There are 3 Updates appearing in the Federal Register for 37 CFR 1. View below or at eCFR (GPOAccess)
prev | next
§ 1.501 Citation of prior art in patent files.
(a) At any time during the period of enforceability of a patent, any person may cite, to the Office in writing, prior art consisting of patents or printed publications which that person states to be pertinent and applicable to the patent and believes to have a bearing on the patentability of any claim of the patent. If the citation is made by the patent owner, the explanation of pertinency and applicability may include an explanation of how the claims differ from the prior art. Such citations shall be entered in the patent file except as set forth in §§ 1.502 and 1.902.
(b) If the person making the citation wishes his or her identity to be excluded from the patent file and kept confidential, the citation papers must be submitted without any identification of the person making the submission.
(c) Citation of patents or printed publications by the public in patent files should either:
(1) Reflect that a copy of the same has been mailed to the patent owner at the address as provided for in § 1.33(c); or in the event service is not possible
(2) Be filed with the Office in duplicate.
[46 FR 29185, May 29, 1981, as amended at 65 FR 76774, Dec. 7, 2000]

Title 37 published on 2014-07-01

The following are only the Rules published in the Federal Register after the published date of Title 37.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-11-14; vol. 79 # 220 - Friday, November 14, 2014
    1. 79 FR 68121 - Changes to Continued Prosecution Application Practice
      GPO FDSys XML | Text
      DEPARTMENT OF COMMERCE, Patent and Trademark Office
      Final rule.
      Effective Date: This final rule is effective on November 14, 2014. The continued prosecution application interim rule published on March 5, 2014 at 79 FR 12384 was effective on March 5, 2014.
      37 CFR Part 1

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code
U.S. Code: Title 35 - PATENTS

Title 37 published on 2014-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 37 CFR 1 after this date.

  • 2014-11-14; vol. 79 # 220 - Friday, November 14, 2014
    1. 79 FR 68121 - Changes to Continued Prosecution Application Practice
      GPO FDSys XML | Text
      DEPARTMENT OF COMMERCE, Patent and Trademark Office
      Final rule.
      Effective Date: This final rule is effective on November 14, 2014. The continued prosecution application interim rule published on March 5, 2014 at 79 FR 12384 was effective on March 5, 2014.
      37 CFR Part 1