Does a sale need to be public to trigger the on-sale bar?

No, a sale does not need to be public to trigger the on-sale bar under 35 U.S.C. 102(b). The MPEP clarifies this point: Unlike questions of public use, there is no requirement that “on sale” activity be “public.” “Public” as used in pre-AIA 35 U.S.C. 102(b) modifies “use” only. “Public” does not modify “sale.” (MPEP…

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