We compare patent litigation cases across four European jurisdictions – Germany, France, the Netherlands, and the UK … information at the case, litigant, and patent level for patent cases filed at the major courts in the four jurisdictions. We find …

Post-grant validity challenges at patent offices rely on the private initiative of third parties to correct mistakes … made by patent offices. We hypothesize that incentives to bring post-grant validity challenges are reduced when many firms … benefit from revocation of a patent and when firms are caught up in patent thickets. Using data on opposition against patents …

Post-grant validity challenges at patent offices rely on the private initiative of third parties to correct mistakes … made by patent offices. We hypothesize that incentives to bring post-grant validity challenges are reduced when many firms … benefit from revocation of a patent and when firms are caught up in patent thickets. Using data on opposition against patents …

This paper assesses the impact of adopting a post-grant review institution in the US patent system by comparing the … 'opposition careers' of European Patent Office (EPO) equivalents of litigated US patents to those of a control group of EPO … employing these different methods in our data analysis. We find that EPO equivalents of US litigated patent applications are …

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 …

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 article assesses the impact in the US of adopting a patent post-grant review (PGR) procedure similar to one … counterparts to find that opposition rates are about three times higher among European Patent Office (EPO) equivalents of US …

on patents as an incentive for innovation, the effectiveness of patents for invention disclosure, patent valuation, and … what we know about the design of patent systems. We also look at what is known about some current policy areas, including … software and business method patents, university patenting, and the growth in patent litigation …

on patents as an incentive for innovation, the effectiveness of patents for invention disclosure, patent valuation, and … what we know about the design of patent systems. We also look at what is known about some current policy areas, including … software and business method patents, university patenting, and the growth in patent litigation …

evidence on patents as incentives for innovation, the effectiveness of patents for invention disclosure, patent valuation, and … the design of patent systems. We also look at some current policy areas, including software and business method patents …, university patenting, and the growth in patent litigation …