The contributory infringement rule assesses liability to a third party that contributes to the infringement of a patent. Not only are firms that directly infringe liable, those who indirectly contribute are also liable. We investigate how this rule affects the creation of a network of members...

We develop a stylized dynamic model of highway policing in which a non-racist policeman is given incentives to arrest criminals, but faces a per stop cost of stop which increases when the racial mix of the persons he stops differs from the racial mix of the population. We define the fair jail...

This article examines motivations underlying the government's choice of alternative policy mechanisms for subsidizing agriculture. Optimal policies are analyzed for three government objectives: one where the government wishes to ensure a minimum level of net income for all farmers, a second...