The standard contest model in which participants compete in a single dimension is well understood and documented. Multi-dimension extensions are possible but are liable to increase the complexity of the contest structure, mitigating one of its main advantages: simplicity. In this paper we...

Where product innovation requires several complementary patents, fragmented property rights can limit firms' willingness to invest in R&D. We consider the research intensity in multiple simultaneous R & D contests and how it depends on whether firms already hold relevant patents as well as the...