37 C.F.R. § 1.491 National stage commencement and entry.
Title 37 - Patents, Trademarks, and Copyrights
(a) Subject to 35 U.S.C. 371(f), the national stage shall commence with the expiration of the applicable time limit under PCT Article 22 (1) or (2), or under PCT Article 39(1)(a). (b) An international application enters the national stage when the applicant has filed the documents and fees required by 35 U.S.C. 371(c) within the period set in §1.495. [67 FR 523, Jan. 4, 2002]
Title 37: Patents, Trademarks, and Copyrights
PART 1—RULES OF PRACTICE IN PATENT CASES
Subpart C—International Processing Provisions
National Stage
§ 1.491 National stage commencement and entry.
