This Element offers a review and synthesis of the theoretical analysis of mixed oligopoly, that is a hybrid market structure in which public (state-owned) and private firms interact, using a variety of strategic variables. A distinguishing feature of a mixed oligopoly is that firms have...

We consider a simple oligopoly model where firms engage in cost-reducing R&D and compare two R&D regimes: R&D competition and R&D cooperation in the form of a research joint venture (RJV). We introduce coordination costs for the RJV and examine how these affect the equilibrium outcomes.