crisis has brought the optimal design of pharmaceutical patent policy to the fore. In this paper we evaluate patent policy in … the US pharmaceutical industry. We estimate the effect of patent length and scope on generic entry prior to the expiration … of new drug patents using two quasi-experimental approaches: one based on changes in patent laws and another on the …

This paper merges patent citation data with data on pharmaceutical patent expirations, generic entry, and pricing to … explore the effects of observable patent characteristics on off-patent and on-patent pharmaceutical pricing. Using a sample of … generic entry. Importantly, I find that the number of patent citations that a drug receives from other firms is correlated …

first present descriptive results that chart the rise of brand-name patent portfolios and Paragraph IV challenges. Over time …, patenting has increased, measured by the number of patents per drug and the length of the nominal patent term. Meanwhile, the … fraction of drugs subjected to patent challenges has increased. Drugs are also challenged sooner, relative to brand …

national incentives for patent protection? What is the rationale for international coordination over patent policies? Given …

the licensing contracts on social welfare and optimal patent protection …