35 U.S.C. 102 - Conditions for patentability; novelty and loss of right to patent

(a) NOVELTY; PRIOR ART.-
A person shall be entitled to a patent unless-
(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention; or
(2) the claimed invention was described in a patent issued under section ill, or in an application for patent published or deemed published under section l22{b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention.

(b) EXCEPTIONS.-