Antitrust law and patent law assume that an invalid patent cannot distort competition unless the patentee enforces the patent by initiating infringement litigation or explicitly threatening to do so. The Article argues that invalid patents can destroy competition - even without such enforcement...

Michele Boldrin and David Levine offer a strong attack on intellectual property (IP), which they call “intellectual monopoly.” In their view, IP is not necessary to encourage invention or creation. Quite the contrary, they argue that we get innovation from competition, not monopoly. Further,...