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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, characterises variations in the value of patent rights across technology fields, countries of ownership and time, and explores the determinants of those differences.

Suggested Citation

  • Mark Schankerman, 1991. "How Valuable is Patent Protection? Estimates by Technology Field Using Patent Renewal Data," CEP Discussion Papers dp0046, Centre for Economic Performance, LSE.
  • Handle: RePEc:cep:cepdps:dp0046
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    Cited by:

    1. Gupeng, Zhang & Xiangdong, Chen, 2012. "The value of invention patents in China: Country origin and technology field differences," China Economic Review, Elsevier, vol. 23(2), pages 357-370.
    2. Uijun Kwon & Youngjung Geum, 2020. "Identification of promising inventions considering the quality of knowledge accumulation: a machine learning approach," Scientometrics, Springer;Akadémiai Kiadó, vol. 125(3), pages 1877-1897, December.
    3. Xavier Vives, 2008. "Innovation And Competitive Pressure," Journal of Industrial Economics, Wiley Blackwell, vol. 56(3), pages 419-469, December.
    4. Gould, David M. & Gruben, William C., 1996. "The role of intellectual property rights in economic growth," Journal of Development Economics, Elsevier, vol. 48(2), pages 323-350, March.
    5. Sabourin, David & Baldwin, John R. & Hanel, Peter, 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.
    6. M. Ishaq Nadiri, 1993. "Innovations and Technological Spillovers," NBER Working Papers 4423, National Bureau of Economic Research, Inc.
    7. Stiglitz, Joseph E., 2015. "Leaders and followers: Perspectives on the Nordic model and the economics of innovation," Journal of Public Economics, Elsevier, vol. 127(C), pages 3-16.

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