• A patent owner may use another person’s actions or inactions, such as taking a license or attempting to design around a patent, as circumstantial evidence of the nonobviousness of a patented invention or of a patent’s validity or enforceability. [Cases: Patents 36.1(1). C.J.S. Patents §§ 98–99.]
commercial acquiescence
Patents. Action or inaction by a patentee’s competitor that reflects the competitor’s belief that the patent is valid.