How does reduction to practice relate to the on-sale bar in patent law?
Reduction to practice and the on-sale bar are closely related concepts in patent law, particularly in determining the critical date for patentability. The MPEP 2138.05 does not directly address this relationship, but it’s important to understand their interaction: The on-sale bar, codified in 35 U.S.C. 102(a)(1), prevents patenting an invention that was on sale more…
Read MoreWhat are the criteria for determining if an invention was “on sale” under pre-AIA law?
Under pre-AIA law, the criteria for determining if an invention was “on sale” were established in the Pfaff v. Wells Electronics, Inc. case. The MPEP summarizes these criteria as follows: “The pre-AIA case law indicates that on sale activity will bar patentability if the claimed invention was: (1) the subject of a commercial sale or…
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