The America Invents Act (AIA) brought significant change to America’s patent system by moving from a “first to invent” to a “first to file” system. Some commentators have argued that the AIA also redefined the meaning of “public use” such that secret commercial uses by the inventor are no longer considered prior art. Professor Lemley contends that this assertion is unfounded as a matter of statutory interpretation. Furthermore, Lemley argues that reading the AIA in this way would be an unwise policy decision.