Patent renewals and R and D incentives

Francesca Cornelli, Mark Schankerman

Research output: Contribution to journalArticlepeer-review

110 Scopus citations


In a model with moral hazard and asymmetric information, we show that it can be welfare improving to differentiate patent lives when firms have different R&D productivities. A uniform patent life provides too much R&D incentive to low-productivity firms and too little to high-productivity ones. The optimally differentiated patent scheme can be implemented through a menu of patent lives (or renewals) and associated fees. We characterize the optimal mechanism and use simulation analysis to compare it with existing patent renewal systems and to illustrate the potential welfare gains from the optimal policy.

Original languageEnglish
Pages (from-to)197-213
Number of pages17
JournalRAND Journal of Economics
Issue number2
StatePublished - 1999


Dive into the research topics of 'Patent renewals and R and D incentives'. Together they form a unique fingerprint.

Cite this