What is the “on sale” bar in patent law?

The “on sale” bar in patent law refers to a provision that can prevent an inventor from obtaining a patent if their invention was on sale before the critical date. According to MPEP 2133.03(b): “A sale is a contract between parties to give and to pass rights of property for consideration which the buyer pays…

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How does disposal of prototypes affect patent rights?

The disposal of prototypes before the critical date (typically one year before the patent application filing date) can affect patent rights. The MPEP provides guidance on how examiners should evaluate such situations: Where a prototype of an invention has been disposed of by an inventor before the critical date, inquiry by the examiner should focus…

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