Competition, Innovation and Racing for Priority at the US Patent and Trademark Office, 2005. ,
Patent Renewals and R&D Incentives, Patent Renewals and R&D Incentives, pp.197-213, 1999. ,
DOI : 10.2307/2556077
Patent Races and Optimal Patent Breadth and Length, The Journal of Industrial Economics, vol.44, issue.3, pp.249-265, 1996. ,
DOI : 10.2307/2950496
On the Winner-Take-All Principle in Innovation Races, forthcoming in Journal of the European Economic Association, 2010. ,
Patent Policy and Costly Imitation, The RAND Journal of Economics, vol.23, issue.1, pp.52-63, 1992. ,
DOI : 10.2307/2555432
Citation Frequency and the Value of Patented Inventions, Review of Economics and Statistics, vol.28, issue.3, pp.511-515, 1999. ,
DOI : 10.2307/2555502
Innovation Variety and Patent Breadth, The RAND Journal of Economics, vol.32, issue.1, pp.152-166, 2001. ,
DOI : 10.2307/2696402
How Broad Should the Scope of Patent Protection Be?, The RAND Journal of Economics, vol.21, issue.1, pp.113-130, 1990. ,
DOI : 10.2307/2555498
The case for permissive patents, European Economic Review, vol.33, issue.7, pp.1427-1443, 1989. ,
DOI : 10.1016/0014-2921(89)90056-1
Should Patent Infringement Require Proof of Copying?, Michigan Law Review, vol.105, pp.1525-1536, 2007. ,
Market Structure and Innovation, Market Structure and Innovation, pp.395-410, 1979. ,
DOI : 10.2307/1883165
The Independent Invention Defence in Intellectual Property, Economica, vol.69, issue.276, pp.535-547, 2002. ,
DOI : 10.1111/1468-0335.00299
The Optimal Allocation of Prizes in Contests, American Economic Review, vol.91, issue.3, pp.542-558, 2001. ,
DOI : 10.1257/aer.91.3.542
How Do Patent Laws Influence Innovation? Evidence from Nineteenthcentury World's Fairs, American Economic Review, vol.95, pp.1215-1236, 2005. ,
The Optimal Life of a Patent: A Reply, American Economic Review, vol.62, pp.428-431, 1972. ,
On the Optimality of the Patent Renewal System, The RAND Journal of Economics, vol.30, issue.2, pp.181-196, 1999. ,
DOI : 10.2307/2556076
Innovation and Incentives, 2004. ,
Prior User Rights, American Economic Review, vol.96, issue.2, pp.92-96, 2006. ,
DOI : 10.1257/000282806777211865
Incentive effects of second prizes, European Journal of Political Economy, vol.21, issue.2, pp.467-481, 2005. ,
DOI : 10.1016/j.ejpoleco.2004.07.002