37 CFR 1.491 (pre‑AIA): National stage commencement and entry

Taken from the Ninth Edition of the MPEP, Revision 07.2015, Last Revised in November 2015

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1.491 (pre‑AIA)    National stage commencement and entry.

[Editor Note: Not applicable to patent applications filed under 35 U.S.C. 111(a) or 363 on or after September 16, 2012*]

[Added, 52 FR 20050, May 28, 1987; revised, 66 FR 45775, Aug. 30, 2001; revised, 67 FR 520, Jan. 4, 2002, effective Apr. 1, 2002]
[*See § 1.491 for more information and for the rule applicable to patent applications filed under 35 U.S.C. 111(a) or 363 on or after Sept. 16, 2012]