Can a secret use of an invention constitute public use?

Yes, in some circumstances, a secret or confidential use of an invention can constitute public use under pre-AIA 35 U.S.C. 102(b). The MPEP explains: “[S]ecrecy of use alone is not sufficient to show that existing knowledge has not been withdrawn from public use; commercial exploitation is also forbidden.” (MPEP 2133.03(a)) This means that even if…

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What constitutes a “patent” for rejection purposes under 35 U.S.C. 102(a) or pre-AIA 35 U.S.C. 102(a) and (b)?

The designation of a document as a “patent” by a foreign country does not automatically qualify it as a patent for rejection purposes under U.S. patent law. As stated in MPEP 2126: “It is the substance of the rights conferred and the way information within the ‘patent’ is controlled that is determinative.” This means that…

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