/ Thesaurus / U Synonyms of unpatented Find synonyms for: Adjective1. unpatented, nonproprietary (vs. proprietary)usage: (of devices and processes) not protected by patent; "unpatented inventions"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language