Critics claim that patent screening is ineffective, granting low-quality patents that impose unnecessary social costs …. We develop an integrated framework, involving patent office examination, fees, and endogenous validity challenges in the … courts, to study patent screening both theoretically and quantitatively. In our model, some inventions require the patent …

Despite the promise of efficiency through the use of expert agency adjudication in U.S. patent law, administrative … substitution continues to fall short. In a variety of ways, the decade-old system of Patent Office adjudication is simply an … important defects in the statutory design, but also from the enormous expansion and ascendancy of the Patent Office itself …

We investigate the causal effect of patent rights on cumulative innovation, using large-scale data that approximate the … patent universe in its technological and economic variety. We introduce a novel instrumental variable for patent invalidation … that exploits personnel scarcity in post-grant opposition at the European Patent Office. We find that patent invalidation …

This paper estimates the total cost of patent litigation to alleged infringers. We use a large sample of stock market …

dynamic competition between Italian firms. At the national level the exclusive allocation of the right to patent inventions to … system of protection (provision of a single patent that is valid in all Member States, the abolition of translation … German), to make it easier for competitors to know which is the valid version of the patent …

We study how fragmentation of patent rights ('patent thickets') and the formation of the Court of Appeal for the … Federal Circuit (CAFC) affected the duration of patent disputes, and thus the speed of technology diffusion through licensing …. We develop a model of patent litigation which predicts faster settlement agreements when patent rights are fragmented and …

The paradigmatic defendant in a patent lawsuit is a vertically integrated manufacturer. But much economic activity is …'s infringement. Often patent owners have the option of suing some or all of the members of a supply chain who contribute to the … design, creation and marketing of a new technology.Businesses increasingly contemplate the risk of patent infringement when …

The progression toward reevaluating patent validity in the administrative, rather than judicial, setting became overtly … substitutionary in the America Invents Act. No longer content to encourage court litigants to rely on Patent Office expertise for … emergent border between court and agency power in the U.S. patent system. By design, the border is not absolute. Concurrent …

The twenty-first century “patent litigation explosion” is not unprecedented. In fact, the nineteenth century saw an … even bigger surge of patent cases. During that era, the most prolific patent enforcers brought hundreds or even thousands … more patent litigation, per U.S. patent in force, than the entire United States in 2013. Even the absolute quantity of late …