37 C.F.R. § 1.468 Delays in meeting time limits.
Title 37 - Patents, Trademarks, and Copyrights
Delays in meeting time limits during international processing of international applications may only be excused as provided in PCT Rule 82. For delays in meeting time limits in a national application, see §1.137.
Title 37: Patents, Trademarks, and Copyrights
PART 1—RULES OF PRACTICE IN PATENT CASES
Subpart C—International Processing Provisions
Timing
§ 1.468 Delays in meeting time limits.