Mark Schankerman, Florian Schuett, 27 October 2017

Critics of the patent system argue that ineffective patent office screening is posing an impediment to innovation. This column develops a model to examine the effect of examination, fees, and court litigation on patent quality. Results show that frontloading fees (i.e. higher fees for application versus approval), capping litigation costs, and intensifying patent office examination all lead to increases in social welfare. Simulations calibrated with existing data suggest that about 65-85% of granted patents are invalid.

Mark Schankerman, Alberto Galasso, 31 August 2008

The 'market for innovation' - the licensing and sale of patents - is one of the principal incentives for firms to invest in R&D. In CEPR DP 6946, Galasso and Schankerman set out to examine the impact that US developments have had on market efficiency, by studying the length of patent infringement disputes and find that the US system has performed surprisingly well in recent decades.

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