In recent years a great deal of attention has been paid to patent reform. This debate is exemplified by recent popular publications (Jaffe and Lerner, 2004; Bessen and Meurer, 2008), as well as publicized patent litigation such as the NTP v. Research-in-Motion patent litigation (the Blackberry...

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 drug patents facing generic entry in the 1990s, I...

Patent classification systems are largely designed for administrative purposes, limiting their value for most research purposes. To address this deficiency, Hall, Jaffe, and Trajtenberg (2001) developed a higher-level classification for the National Bureau of Economic Research (NBER) Patent...

Patent classification systems are largely designed for administrative purposes, limiting their value for most research purposes. To address this deficiency, Hall, Jaffe, and Trajtenberg (2001) developed a higher-level classification for the National Bureau of Economic Research (NBER) Patent...

Attention to the asset value of intellectual property (IP) has traditionally concentrated on high-value patent sales and licenses. This narrow focus neglects non-patent assets held by a broader set of economic agents, such as trademarks, and overlooks the evolving ways owners are employing and...

This paper discusses the construction of a new longitudinal database tracking inventors and patent-owning firms over time. We match granted patents between 2000 and 2011 to administrative databases of firms and workers housed at the U.S. Census Bureau. We use inventor information in addition to...