This paper investigates the effect of (potential) market size on entry of new drugs and pharmaceutical innovation. Focusing on exogenous changes driven by U.S. demographic trends, we find that a 1 percent increase in the potential market size for a drug category leads to a 4 to 6 percent...

Our study puts special attention to the fact that R&D cooperations in the pharmaceutical industry are formed at different stages throughout the drug development process. We study if the timing to engage in R&D cooperations in the pharmaceutical industry has different impacts on the technology...

A generic drug maker that has been sued for infringing a patent on a branded drug will sometimes promise, as part of an agreement settling the litigation, to delay selling its drug until as late as the expiration of the patent term. I adapt the standard optimal patent term model to determine...

The patent laws of many countries have ''research exemption'' provisions that exempt certain research-related uses of proprietary materials from patent infringement. By limiting the rights of existing patent holders, such rules are meant to facilitate follow-on innovation and benefit latecomer...

Within the last decades, there have been many technological and regulatory changes in the pharmaceutical industry. Some of these developments facilitate the innovative activities of large firms, while others foster small firms. It is therefore surprising that the implications of these changes in...

How does a firm’s market power in existing products affect its incentives to innovate? We explore this fundamental question using granular project-level and firm-level data from the pharmaceutical industry, focusing on a particular mechanism through which incumbent firms maintain their market...