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A Brief History of Space and Time: the Scope-Year Index as a Patent Value Indicator Based on Families and Renewals

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Author Info
Bruno Van Pottelsberghe () (Centre Emile Bernheim, Solvay Business School, Université Libre de Bruxelles, Brussels)
Nicolas van Zeebroeck () (Centre Emile Bernheim, Solvay Business School, Université Libre de Bruxelles, Brussels.)

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Abstract

The renewal of patents and their geographical scope for protection constitute two essential dimensions in a patent’s life, and probably the most frequently used patent value indicators. The intertwining of these dimensions (the geographical scope of protection may vary over time) makes their analysis complex, as any measure along one dimension requires an arbitrary choice on the second. This paper proposes a new indicator of patent value, the Scope-Year index, combining the two dimensions. The index is computed for patents filed at the EPO from 1980 to 1996 and validated in its member states. It shows that the average value of patent filings has increased in the early eighties but has constantly decreased from the mid-eighties until the mid nineties, despite the institutional expansion of the EPO. This result sheds a new and worrying light on the worldwide boom in patent filings.

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File URL: http://www.solvay.edu/EN/Research/Bernheim/documents/wp07019.pdf
File Format: application/pdf
File Function: First version, 2007
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Publisher Info
Paper provided by Université Libre de Bruxelles, Solvay Business School, Centre Emile Bernheim (CEB) in its series Working Papers CEB with number 07-019.RS.

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Length: 19 pages
Date of creation: Jun 2007
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Handle: RePEc:sol:wpaper:07-019

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Related research
Keywords: Patent value geographical scope renewals patent statistics patent families.

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Find related papers by JEL classification:
K1 - Law and Economics - - Basic Areas of Law
L1 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance
O34 - Economic Development, Technological Change, and Growth - - Technological Change - - - Intellectual Property Rights
O38 - Economic Development, Technological Change, and Growth - - Technological Change - - - Government Policy

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  1. Jean Olson Lanjouw, 1993. "Patent Protection: Of What Value and for How Long?," NBER Working Papers 4475, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  2. Ariel Pakes & Margaret Simpson, 1989. "Patent Renewal Data," NBER Reprints 1265, National Bureau of Economic Research, Inc.
  3. Reitzig, Markus, 2004. "Improving patent valuations for management purposes--validating new indicators by analyzing application rationales," Research Policy, Elsevier, vol. 33(6-7), pages 939-957, September. [Downloadable!] (restricted)
  4. Dominique Guellec & Bruno van Pottelsberghe de la Potterie, 2002. "The Value of Patents and Patenting Strategies: Countries and Technology Areas Patterns," Economics of Innovation and New Technology, Taylor and Francis Journals, vol. 11(2), pages 133-148, January. [Downloadable!] (restricted)
  5. Guellec, Dominique & Pottelsberghe de la Potterie, Bruno v., 2000. "Applications, grants and the value of patent," Economics Letters, Elsevier, vol. 69(1), pages 109-114, October. [Downloadable!] (restricted)
  6. Dietmar Harhoff & Francis Narin & F. M. Scherer & Katrin Vopel, 1999. "Citation Frequency And The Value Of Patented Inventions," The Review of Economics and Statistics, MIT Press, vol. 81(3), pages 511-515, August. [Downloadable!] (restricted)
  7. Francois, Didier & van Pottelsberghe, Bruno, 2006. "The Cost Factor in Patent Systems," CEPR Discussion Papers 5944, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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  8. 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)
  9. Jean O. Lanjouw & Mark Schankerman, 1999. "The Quality of Ideas: Measuring Innovation with Multiple Indicators," NBER Working Papers 7345, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  10. 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)
  11. Manuel Trajtenberg, 1990. "A Penny for Your Quotes: Patent Citations and the Value of Innovations," RAND Journal of Economics, The RAND Corporation, vol. 21(1), pages 172-187, Spring. [Downloadable!] (restricted)
  12. Archontopoulos, Eugenio & Guellec, Dominique & Stevnsborg, Niels & van Pottelsberghe de la Potterie, Bruno & van Zeebroeck, Nicolas, 2007. "When small is beautiful: Measuring the evolution and consequences of the voluminosity of patent applications at the EPO," Information Economics and Policy, Elsevier, vol. 19(2), pages 103-132, June. [Downloadable!] (restricted)
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  13. Elefthérios Sapsalis & Bruno van Pottelsberghe de la Potterie, 2007. "The Institutional Sources Of Knowledge And The Value Of Academic Patents," Economics of Innovation and New Technology, Taylor and Francis Journals, vol. 16(2), pages 139-157. [Downloadable!] (restricted)
    Other versions:
  14. Deng, Yi, 2007. "The effects of patent regime changes: A case study of the European patent office," International Journal of Industrial Organization, Elsevier, vol. 25(1), pages 121-138, February. [Downloadable!] (restricted)
    Other versions:
  15. Jean O. Lanjouw & Ariel Pakes & Jonathan Putnam, 1996. "How to Count Patents and Value Intellectual Property: Uses of Patent Renewal and Application Data," NBER Working Papers 5741, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  16. Kortum, Samuel & Lerner, Josh, 1999. "What is behind the recent surge in patenting?1," Research Policy, Elsevier, vol. 28(1), pages 1-22, January. [Downloadable!] (restricted)
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