Revised Interim Guidelines for Examination of Patent Applications Under the 35 U.S.C. Sec. 112, para. 1 ``Written Description'' Requirement; Request for Comments
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The Patent and Trademark Office (PTO) requests comments from any interested member of the public on the following Revised Interim Guidelines for Examination of Patent Applications Under the 35 U.S.C. 112, para. 1 ``Written Description'' Requirement (Revised Interim Guidelines). These Revised Interim Guidelines will be used by PTO personnel in their review of patent applications for compliance with the ``written description'' requirement of 35 U.S.C. Sec. 112,para. 1. This revision supersedes the Interim Written Description Guidelines which were published contemporaneously in both the Federal Register and Official Gazette at 63 FR 32,639 (June 15, 1998) and 1212 O.G. 15 (July 7, 1998), respectively. This revision reflects the current understanding of the PTO regarding the written description requirement of 35 U.S.C. 112, para. 1 and is applicable to all technologies.
- Current entry point
- www.federalregister.gov/documents/1999/12/21/99-33053/revised-interim-guidelines-for-examination-of-patent-applications-under-the-35-usc-sec-112-para-1 (permanent link in the Federal Register, verified 2026-09-30)
- Legacy system and where it moved
- No legacy system name mention in title or summary )
- Fee
- No fee mention in title or summary )
- What you need (account or API key)
- No account or key mention in title or summary )
- Published
- 1999-12-21
- Document type
- Notice
原データ更新日：2026-10-06
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