Expired Patents

49 Pages Posted: 23 Apr 2014 Last revised: 16 Oct 2016

See all articles by Saurabh Vishnubhakat

Saurabh Vishnubhakat

Yeshiva University - Benjamin N. Cardozo School of Law; Duke University School of Law

Date Written: April 22, 2014


This article presents a comprehensive empirical description of the public domain of technologies that have recently passed out of patent protection. From a new dataset of over 300,000 patents that expired during 2008–2012, the study examines technological, geographical, and procedural traits of newly public inventions as a basis for exploring the social value associated with their competitive use. Moreover, comparing these inventions to inventions newly patented during the same period enables more specific discussion of how the balance of innovation in the United States continues to change.

Keywords: patents, innovation, public domain, empirical

JEL Classification: O33, O34, D23, D63

Suggested Citation

Vishnubhakat, Saurabh, Expired Patents (April 22, 2014). 64 Cath. U. L. Rev. 419 (2015), Texas A&M University School of Law Legal Studies Research Paper No. 16-49, Available at SSRN: https://ssrn.com/abstract=2427946

Saurabh Vishnubhakat (Contact Author)

Yeshiva University - Benjamin N. Cardozo School of Law ( email )

55 Fifth Ave.
New York, NY 10003
United States

HOME PAGE: http://cardozo.yu.edu/directory/saurabh-vishnubhakat

Duke University School of Law

Durham, NC

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