n A declaration issued by a government agency declaring someone the inventor of a new invention and having the privilege of stopping others from making, using or selling the claimed invention; a letter patent.

n A specific grant of ownership of a piece of property; a land patent.

n patent leather | Patent leather: a varnish|varnished, high-gloss leather typically used for shoes and accessories.

v To successfully register an invention with a government agency; to secure a letter patent.

a (biology) open, unobstructed, expanded.

a explicit and obvious.

a (context|of flour) that is fine, and consists mostly of the inner part of the endosperm