Exclusive rights, like mineral leases and radio spectrum licences, often hold option-like features. This occurs when licencees do not face the obligation to to develop the lease or to undertake the investment required to use the assigned spectrum. However, to avoid licences being unused for...

In a context of product innovation, we study two-part tariff licensing between a patentee and a potential rival which compete in a differentiated product market characterized by network externalities. The latter are shown to crucially affect the relative profitability of Cournot vs. Bertrand...