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How Valuable is Patent Protection? Estimates By Technology Field Using Patent Renewal Data

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Mark Schankerman
Abstract

This paper presents quantitative estimates of the private value of property rights conferred by patent protection for different technology fields and countries of ownership. The measures are derived from parametric estimation of a model of patent renewal, using a new data set on patent renewals in France during the period 1969-1987. The results show that patent protection is a significant, but not the major, source of private returns to inventive activity and that its importance varies sharply across technology fields. The paper quantifies the equivalent subsidy to R&D generated by the patent system, characterizes variations in the value of patent rights across technology fields, countries of ownership and time, and explores the determinants of those differences.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 3780.

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Date of creation: Jul 1991
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Handle: RePEc:nbr:nberwo:3780

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Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Bronwyn H. Hall & Zvi Griliches & Jerry A. Hausman, 1986. "Patents and R&D: Is There A Lag?," NBER Working Papers 1454, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  2. Mansfield, Edwin & Schwartz, Mark & Wagner, Samuel, 1981. "Imitation Costs and Patents: An Empirical Study," Economic Journal, Royal Economic Society, vol. 91(364), pages 907-18, December. [Downloadable!] (restricted)
  3. Pakes, Ariel S, 1986. "Patents as Options: Some Estimates of the Value of Holding European Patent Stocks," Econometrica, Econometric Society, vol. 54(4), pages 755-84, July. [Downloadable!] (restricted)
  4. Richard C. Levin & Alvin K. Klevorick & Richard R. Nelson & Sidney G. Winter, 1987. "Appropriating the Returns from Industrial Research and Development," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 18(1987-3), pages 783-832. [Downloadable!]
  5. Richard C. Levin & Alvin K. Klevorick & Richard R. Nelson & Sidney G. Winter, 1988. "Appropriating the Returns from Industrial R&D," Cowles Foundation Discussion Papers 862, Cowles Foundation, Yale University. [Downloadable!]
  6. Ariel Pakes & Mark Schankerman, 1984. "The Rate of Obsolescence of Patents, Research Gestation Lags, and the Private Rate of Return to Research Resources," NBER Chapters, in: R & D, Patents, and Productivity, pages 73-88 National Bureau of Economic Research, Inc. [Downloadable!]
  7. Ariel Pakes, 1986. "Patents as Options: Some Estimates of the Value of Holding European Patent Stocks," NBER Working Papers 1340, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. David Gould & William C. Gruben, 1994. "The role of intellectual property rights in economic growth," Working Papers 94-09, Federal Reserve Bank of Dallas. [Downloadable!]
  2. Baldwin, John R. & Hanel, Peter & Sabourin, David, 2000. "Determinants of Innovative Activity in Canadian Manufacturing Firms: The Role of Intellectual Property Rights," Analytical Studies Branch Research Paper Series 2000122e, Statistics Canada, Analytical Studies Branch. [Downloadable!]
  3. M. Ishaq Nadiri, 1993. "Innovations and Technological Spillovers," NBER Working Papers 4423, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  4. Nadiri, M.I., 1993. "Innovations and Technological Spillovers," Working Papers 93-31, C.V. Starr Center for Applied Economics, New York University. [Downloadable!]
  5. Vives, Xavier, 2006. "Innovation and competitive pressure," IESE Research Papers D/634, IESE Business School.
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  6. F. M. Scherer, 1998. "The Size Distribution of Profits from Innovation," Annales d'Economie et de Statistique, ADRES, issue 49-50, pages 20, Janvier-J. [Downloadable!]
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