acquiescence (ak-wee-es-<<schwa>>nts).1. A person’s tacit or passive acceptance; implied
consent to an act.
commercial acquiescence.Patents. Action or inaction by a patentee’s competitor that reflects
the competitor’s belief that the patent is valid. • A patent owner may use another person’s actions
or inactions, such as taking a license or attempting to design around a patent, as circumstantial
evidence of the nonobviousness of a patented invention or of a patent’s validity or enforceability.
[Cases: Patents 36.1(1). C.J.S. Patents §§ 98–99.]
2.Int’l law.Passivity and inaction on foreign claims that, according to customary international
law, usu. call for protest to assert, preserve, or safeguard rights. • The result is that binding legal
effect is given to silence and inaction. Acquiescence, as a principle of substantive law, is grounded
in the concepts of good faith and equity.
acquietandis plegiis (<<schwa>>-kwI-<<schwa>>-tan-dis plee-jee-is), n.[Law Latin “for
acquitting sureties”] Hist. A writ to force a creditor to discharge a surety when the debt has been
satisfied.[Blacks Law 8th]