Code of Federal Regulations Title 37. Patents, Trademarks, and Copyrights § 37.41.4 Timeliness

(1) A late filing that results in either an application becoming abandoned or a reexamination prosecution becoming terminated under § 1.550(d) or § 1.957(b) of this title or limited under § 1.957(c) of this title may be revived as set forth in § 1.137 of this title.

(2) A late filing that does not result in either an application becoming abandoned or a reexamination prosecution becoming terminated under § 1.550(d) or § 1.957(b) of this title or limited under § 1.957(c) of this title will be excused upon a showing of excusable neglect or a Board determination that consideration on the merits would be in the interest of justice.

(1) Extensions during prosecution (see § 1.136 of this title),

(2) Filing of a brief or request for oral hearing (see §§ 41.37, 41.41, 41.47, 41.67, 41.68, 41.71 and 41.73), or

(3) Seeking judicial review (see §§ 1.301 to 1.304 of this title).