(a) PATENT APPLICANT.-An applicant for a patent, any of whose claims has been twice rejected, may appeal from the decision of the primary examiner to the Patent Trial and Appeal Board, having once paid the fee for such appeal. (b) PATENT OWNER.-A patent owner in a reexamination may appeal from the final rejection of any claim by the primary examiner to the Patent Trial and Appeal Board, having once paid the fee for such appeal. 35 U.S.C. § 134 July 19, 1952, ch. 950, 66 Stat. 801; Pub. L. 98-622
(a) An amendment after final action must comply with § 1.114 or this section. (b) After a final rejection or other final action (§ 1.113 ) in an application or in an ex parte reexamination filed under § 1.510 , or an action closing prosecution (§ 1.949 ) in an inter partes reexamination filed under § 1.913 , but before or on the same date of filing an appeal (§ 41.31 or § 41.61 of this title): (1) An amendment may be made canceling claims or complying with any requirement of form expressly set forth