The United States patent system has become sand rather than lubricant in the wheels of American progress. Such is the premise behind this provocative and timely book by two of the nation's leading experts on patents and economic innovation.

Innovation and Its Discontents tells the story of how recent changes in patenting--an institutional process that was created to nurture innovation--have wreaked havoc on innovators, businesses, and economic productivity. Jaffe and Lerner, who have spent the past two decades studying the patent system, show how legal changes...