Русско-англо-русский юридический словарь

Since the patent term (35 U.S.C. 154) would expire on ___, the period of extension is the number of days to extend the term of the patent from its expiration date to and including ___, or ___ days. (Official website of the United States Patent and Trademark Office)

All other rights and obligations of the parties will cease upon expiration or termination of this Agreement. (http://contracts.onecle.com)

A hostage is a person or entity which is held by one of two belligerent parties to the other or seized as security for the carrying out of an agreement, or as a preventive measure against war. However, in contemporary usage, it means someone who is seized by a criminal abductor in order to compel another party such as a relative, employer, law enforcement, or government to act, or refrain from acting, in a particular way, often under threat of serious physical harm to the hostage(s) after expiration of an ultimatum. (Wikipedia)

the remaining 5% upon the expiration of the Defects Liability Period [i.e. 12 months from the issuance of the Substantial Completion Certificate] for the whole of the Main Contract provided the Architect has certified [the “Defects Rectification Certificate”] that all defects have been made good (“the Final Payment”).” (Schindler Lifts (Hong Kong) Ltd v Sui Chong Construction And Engineering Co Ltd)