uncertainty of meaning created by the obscure or ambiguous language appearing on the face of a written instrument.
noun 1. a potential sharp drop in sales and revenue for a company when one of its patents expires: the looming patent cliffs faced by pharmaceutical firms.
- Patent ductus arteriosus
patent ductus arteriosus pa·tent ductus ar·te·ri·o·sus (pāt’nt; är-tēr’ē-ō’səs) n. A cardiovascular defect that is caused by failure of the arterial canal to close after birth.
[pat-nt or for 10, 12–15, peyt-; especially British peyt-nt] /ˈpæt nt or for 10, 12–15, ˈpeɪt-; especially British ˈpeɪt nt/ noun 1. the exclusive right granted by a government to an inventor to manufacture, use, or sell an invention for a certain number of years. 2. an invention or process protected by this right. 3. […]
[pat-n-tee or, esp. British, peyt-] /ˌpæt nˈti or, esp. British, ˌpeɪt-/ noun 1. a person, group, or company that has been granted a . /ˌpeɪtənˈtiː; ˌpæ-/ noun 1. a person, group, company, etc, that has been granted a patent