Filing [Patents] Law and Legal Definition
According to 37 CFR 41.60 [Title 37 -- Patents, Trademarks, and Copyrights; Chapter I -- United States Patent and Trademark Office, Department of Commerce; Subchapter A – General; Part 41 -- Practice Before the Board of Patent Appeals and Interferences; Subpart C -- Inter Partes Appeals], the term filing means “filing with a certificate indicating service of the document under § 1.903 of this title.”