This paper presents a Cournot oligopoly model with R&D spillovers both within and across industries. The aim is to provide an appropri- ate theoretical foundation for three different hypotheses regarding the impact of the local production structure on innovation and output, as well as addressing...

This study presents a model in which interest groups compete for partially exclusive rents and the number of winners is stochastic. Partial exclusivity can explain the low empirical estimates of rent dissipation that create the Tullock paradox. However,partial exclusivity also increases...