This article analyzes the effects of intellectual property rights in a qualityladder model in which incumbent firms preemptively innovate in order to keep their position of leadership. Unlike in models with leapfrogging, granting nonexpiring forward protection reduces the rate of innovation and...

This chapter surveys the literature on international trade and the protection of intellectual property rights (IPRs) in the global economy. The discussion is organized around the major questions in the field. How does openness to trade affect national incentives for patent protection? What is...