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The AIA 500 Expanded: The Effects of Patent Monetization Entities

Robin Feldman

University of California Hastings College of the Law

Thomas Ewing

Avancept LLC; Chalmers University of Technology

Sara Jeruss

Lex Machina Inc.

April 9, 2013

UC Hastings Research Paper No. 45

Public attention is increasingly focused on patent monetization entities. Known colloquially as “patent trolls,” these entities derive income from licensing or litigating, rather than producing a product. To understand the impact of these entities, we examined all patent litigations filed across four years, 2007-2008 and 2011-2012. This involved analyzing almost 13,000 cases and almost 30,000 patents asserted.

Most striking, as of 2012, litigation by patent monetization entities now represents a majority of the patent litigations filed in the United States. In fact, 58.7% of all patent lawsuits were filed by monetizers. This is a sharp rise from 2007, when monetizers filed only 24.6%. In addition, of the parties who filed the greatest number of patent litigations in the years we studied, all 10 are monetizers.

We also examined the age and transfer patterns of the patents asserted. Among other findings, we saw that the newest patents issued are the ones most frequently litigated. This could suggest that people are increasingly applying for patents with the intent of filing lawsuits, rather than making products.

Our analysis also revealed a problem previously unrecognized. Mechanisms for notifying the public when patents have been asserted in lawsuits are woefully inadequate. Current mechanisms did not operate 2/3 of the time. The study also found indications of stealth behavior, as well as a market for purchasing patents after they expire.

Number of Pages in PDF File: 138

Keywords: patent, patents, patent troll, patent trolls, NPE, NPEs, non-practicing entities, intellectual property, empirical, antitrust

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Date posted: April 9, 2013 ; Last revised: January 31, 2014

Suggested Citation

Feldman, Robin and Ewing, Thomas and Jeruss, Sara, The AIA 500 Expanded: The Effects of Patent Monetization Entities (April 9, 2013). UC Hastings Research Paper No. 45. Available at SSRN: https://ssrn.com/abstract=2247195 or http://dx.doi.org/10.2139/ssrn.2247195

Contact Information

Robin Feldman (Contact Author)
University of California Hastings College of the Law ( email )
200 McAllister Street
San Francisco, CA 94102
United States

Thomas Ewing
Avancept LLC ( email )
No Address Available
Chalmers University of Technology ( email )
SE-412 96 Goteborg
Sara Jeruss
Lex Machina Inc. ( email )
1010 Doyle Street, Suite 200
Suite 200
Menlo Park, CA 94025
United States
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