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: a device, process, or discovery under U.S. patent law that is new and useful, that reflects extraordinary creative ability or skill, and that makes a distinct and recognized contribution to and advancement of science
: the act or process of creating such an invention compare aggregation, combination, equivalent
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.