Understanding the Realities of Modern Patent Litigation
John R. Allison
University of Texas - McCombs School of Business
Mark A. Lemley
Stanford Law School
David L. Schwartz
Northwestern Law School
May 29, 2014
92 Texas Law Review 1769 (2014)
Chicago-Kent College of Law Research Paper No. 2014-12
Stanford Public Law Working Paper No. 2442451
Sixteen years ago, two of us published the first detailed empirical look at patent litigation. In this Article, we update and expand the earlier study with a new hand-coded data set. We evaluate all substantive decisions rendered by any court in every patent case filed in 2008 and 2009 — decisions made between 2009 and 2013. We consider not just patent validity but also infringement and unenforceability. Moreover, we relate the outcomes of those cases to a host of variables, including variables related to the parties, the patents, and the courts in which those cases were litigated. The result is a comprehensive picture of the outcomes of modern patent litigation, one that confirms conventional wisdom in some respects but upends it in others. In particular, we find a surprising amount of continuity in the basic outcomes of patent lawsuits over the past twenty years, despite rather dramatic changes in who brought patent suits during that time.
Number of Pages in PDF File: 33
Date posted: May 28, 2014 ; Last revised: October 7, 2014
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