We show how characterizing optimal patent policy for the pharmaceutical industry only requires information about …, we use data on Paragraph IV patent challenges, and two quasi-experimental approaches: one based on changes in patent laws … and another on the allocation of patent applications to examiners. We find that extending effective patent duration …

an important input to subsequent innovation, the exclusive rights conferred by a patent may also impose significant costs … upon follow-on innovators. Optimal patent policy should seek to maximize the patent incentive effect, while minimizing … burdens placed on future innovation by tailoring the scope of the patent to the characteristics of each technological sector …

We present a model of process innovation that offers an explanation for the negative relationship between patent … favor imitation. Since imitation is discouraged for strong levels of patent protection, we find that R&D investment is often … maximized for an intermediate protection level. In addition, an increase in patent protection can enhance the innovator …

This essay is the introduction to a forthcoming volume entitled, Regulating Innovation: Competition Policy and Patent … relationship between regulation - both through competition policy and patent law - and innovation, and the corresponding …

between the propensity to jointly own a patent and proximity in the product market; b) joint patents are associated with less …

technology markets and increased rents for small inventors. Is this also true for today's NPEs? Or are they “patent trolls” who … opportunistically litigate over software patents with unpredictable boundaries? Using stock market event studies around patent lawsuit …

lower than the social planner's benchmark, which suggests a role for patent policy. We focus on a “non-infringing inventive … instrument in the form of patent length policy …