37 CFR 1.81 - Drawings required in patent application.

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§ 1.81 Drawings required in patent application.

(a) The applicant for a patent is required to furnish a drawing of the invention where necessary for the understanding of the subject matter sought to be patented. Since corrections are the responsibility of the applicant, the original drawing(s) should be retained by the applicant for any necessary future correction.

(b) Drawings may include illustrations which facilitate an understanding of the invention (for example, flow sheets in cases of processes, and diagrammatic views).

(c) Whenever the nature of the subject matter sought to be patented admits of illustration by a drawing without its being necessary for the understanding of the subject matter and the applicant has not furnished such a drawing, the examiner will require its submission within a time period of not less than two months from the date of the sending of a notice thereof.

(d) Drawings submitted after the filing date of the application may not be used to overcome any insufficiency of the specification due to lack of an enabling disclosure or otherwise inadequate disclosure therein, or to supplement the original disclosure thereof for the purpose of interpretation of the scope of any claim.

[43 FR 4015, Jan. 31, 1978, as amended at 53 FR 47808, Nov. 28, 1988; 77 FR 48821, Aug. 14, 2012; 78 FR 62404, Oct. 21, 2013]

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].

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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 Part 1 after this date.

  • 2015-10-27; vol. 80 # 207 - Tuesday, October 27, 2015
    1. 80 FR 65649 - Changes To Facilitate Applicant's Authorization of Access to Unpublished U.S. Patent Applications by Foreign Intellectual Property Offices
      GPO FDSys XML | Text
      DEPARTMENT OF COMMERCE, Patent and Trademark Office
      Final rule.
      Effective Date: The changes in this final rule are effective on November 30, 2015. The revised ADS form (PTO/AIA/14) will be posted on the Office's Web site on or before the effective date. Applicability Date: The changes to 37 CFR 1.14(h) apply to all patent applications filed before November 30, 2015, and to all patent applications filed on or after November 30, 2015.
      37 CFR Part 1