§19 (15 U.S.C. §1069) Applicability, in inter partes proceeding, of equitable principles of laches, estoppel and acquiescence
In all inter partes proceedings equitable principles of laches, estoppel, and acquiescence, where applicable, may be considered and applied.
(Amended Jan. 2, 1975, 88 Stat. 1949; Nov. 16, 1988, 102 Stat. 3941.)