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Patent Thickets, Judicial Enforcement and the Market for Innovation: Theory and Evidence from Patent Litigation

  • Galasso, Alberto
  • Schankerman, Mark
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    We study how fragmentation of patent rights ('patent thickets') and the formation of the Court of Appeal for the Federal Circuit (CAFC) affected the duration of patent disputes, and thus the speed of technology diffusion through licensing. We develop a model of patent litigation which predicts faster settlement agreements when patent rights are fragmented and when there is less uncertainty about court outcomes, as was associated with the 'pro-patent shift' of CAFC. The model also predicts that the impact of fragmentation on settlement duration should be smaller under CAFC. We confirm these predictions empirically using a dataset that covers nearly all patent suits in U.S. federal district courts during the period 1975-2000. Finally, we analyze how fragmentation affects total settlement delay, taking into account both reduction in duration per dispute and the increase in the number of required patent negotiations associated with patent thickets.

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    Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 6946.

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    Date of creation: Aug 2008
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    Handle: RePEc:cpr:ceprdp:6946
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    1. Michael Noel & Mark Schankerman, 2006. "Strategic Patenting and Software Innovation," STICERD - Economics of Industry Papers 43, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
    2. Lanjouw, Jean O & Schankerman, Mark, 2004. "Protecting Intellectual Property Rights: Are Small Firms Handicapped?," Journal of Law and Economics, University of Chicago Press, vol. 47(1), pages 45-74, April.
    3. Schankerman, Mark & Scotchmer, Suzanne, 2001. "Damages and Injunctions in Protecting Intellectual Property," RAND Journal of Economics, The RAND Corporation, vol. 32(1), pages 199-220, Spring.
    4. Bronwyn H. Hall & Adam B. Jaffe & Manuel Trajtenberg, 2001. "The NBER Patent Citation Data File: Lessons, Insights and Methodological Tools," NBER Working Papers 8498, National Bureau of Economic Research, Inc.
    5. Josh Lerner & Jean Tirole, 2002. "Efficient Patent Pools," NBER Working Papers 9175, National Bureau of Economic Research, Inc.
    6. Michael Noel & Mark Schankerman, 2006. "Strategic patenting and software innovation," LSE Research Online Documents on Economics 4653, London School of Economics and Political Science, LSE Library.
    7. Carl Shapiro, 2004. "Navigating the Patent Thicket: Cross Licenses, Patent Pools and Standard Setting," Levine's Working Paper Archive 122247000000000539, David K. Levine.
    8. Mark Schankerman, 1998. "How Valuable is Patent Protection? Estimates by Technology Field," RAND Journal of Economics, The RAND Corporation, vol. 29(1), pages 77-107, Spring.
    9. Nancy T. Gallini, 2002. "The Economics of Patents: Lessons from Recent U.S. Patent Reform," Journal of Economic Perspectives, American Economic Association, vol. 16(2), pages 131-154, Spring.
    10. Suzanne Scotchmer, 1996. "Protecting Early Innovators: Should Second-Generation Products Be Patentable?," RAND Journal of Economics, The RAND Corporation, vol. 27(2), pages 322-331, Summer.
    11. Joshua S. Gans & David H. Hsu & Scott Stern, 2002. "When Does Start-Up Innovation Spur the Gale of Creative Destruction?," RAND Journal of Economics, The RAND Corporation, vol. 33(4), pages 571-586, Winter.
    12. Carlos J. Serrano, 2010. "The dynamics of the transfer and renewal of patents," RAND Journal of Economics, RAND Corporation, vol. 41(4), pages 686-708.
    13. Anand, Bharat N & Khanna, Tarun, 2000. "The Structure of Licensing Contracts," Journal of Industrial Economics, Wiley Blackwell, vol. 48(1), pages 103-35, March.
    14. Adam B. Jaffe & Josh Lerner & Scott Stern, 2001. "Innovation Policy and the Economy, Volume 1," NBER Books, National Bureau of Economic Research, Inc, number jaff01-1, August.
    15. Spier, Kathryn E, 1992. "The Dynamics of Pretrial Negotiation," Review of Economic Studies, Wiley Blackwell, vol. 59(1), pages 93-108, January.
    16. Gambardella, Alfonso & Giuri, Paola & Luzzi, Alessandra, 2007. "The market for patents in Europe," Research Policy, Elsevier, vol. 36(8), pages 1163-1183, October.
    17. Michael Noel & Mark Schankerman, 2006. "Strategic Patenting and Software Innovation," CEP Discussion Papers dp0740, Centre for Economic Performance, LSE.
    18. Michael Noel & Mark Schankerman, 2006. "Strategic patenting and software innovation," LSE Research Online Documents on Economics 3727, London School of Economics and Political Science, LSE Library.
    19. Rothschild, Michael & Stiglitz, Joseph E., 1970. "Increasing risk: I. A definition," Journal of Economic Theory, Elsevier, vol. 2(3), pages 225-243, September.
    20. Rosemarie Ham Ziedonis, 2004. "Don't Fence Me In: Fragmented Markets for Technology and the Patent Acquisition Strategies of Firms," Management Science, INFORMS, vol. 50(6), pages 804-820, June.
    21. Lucian Arye Bebchuk, 1984. "Litigation and Settlement under Imperfect Information," RAND Journal of Economics, The RAND Corporation, vol. 15(3), pages 404-415, Autumn.
    22. Lanjouw, Jean O & Lerner, Josh, 2001. "Tilting the Table? The Use of Preliminary Injunctions," Journal of Law and Economics, University of Chicago Press, vol. 44(2), pages 573-603, October.
    23. Noel, Michael D. & Schankerman, Mark, 2006. "Strategic Patenting and Software Innovation," CEPR Discussion Papers 5701, C.E.P.R. Discussion Papers.
    24. Matthew D. Henry & John L. Turner, 2006. "The Court of Appeals for the Federal Circuit’s Impact on Patent Litigation," The Journal of Legal Studies, University of Chicago Press, vol. 35(1), pages 85-117, 01.
    25. Joshua S. Cans & Scott Stern, 2000. "Incumbency and R&D Incentives: Licensing the Gale of Creative Destruction," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 9(4), pages 485-511, December.
    26. Kiefer, Nicholas M, 1988. "Economic Duration Data and Hazard Functions," Journal of Economic Literature, American Economic Association, vol. 26(2), pages 646-79, June.
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