We use detailed data to estimate the private costs and private rents of United States patents for publicly-traded firms. In analyzing costs, we first introduce a novel theoretical model to interpret our estimates. We then combine lawsuit data from Derwent Litalert with non-practicing entity...

We use structural break analysis to estimate rates of patent validity and infringement in decisions on the merits in United States Courts over 1929-2006. We separately estimate these rates for District Court and Appeals Court decisions. We find multiple structural breaks in both validity and...

In Paragraph (iv) pharmaceutical cases, a patent-litigation decision often determines whether a brand-firm monopoly continues or generic entry occurs. Using unique patent litigation data and an event-study approach that accounts for probabilistic district court decisions and an appellate...