/ Thesaurus / P Synonyms of patent of invention Find synonyms for: Noun1. patent, patent of invention, document, written document, papersusage: a document granting an inventor sole rights to an inventionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language