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…

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Does the enablement inquiry apply to “on sale” determinations under AIA?

No, the enablement inquiry does not apply to “on sale” determinations under AIA 35 U.S.C. 102(a)(1). This interpretation is consistent with pre-AIA law. The MPEP states: “[T]he enablement inquiry is not applicable to the question of whether a claimed invention is ‘on sale’ under pre-AIA 35 U.S.C. 102(b).” Since the AIA’s “on sale” provision is…

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