IDEAS home Printed from https://ideas.repec.org/p/nbr/nberwo/5741.html
   My bibliography  Save this paper

How to Count Patents and Value Intellectual Property: Uses of Patent Renewal and Application Data

Author

Listed:
  • Jean O. Lanjouw
  • Ariel Pakes
  • Jonathan Putnam

Abstract

Patent counts are very imperfect measures of innovative output. This paper discusses how additional data-the number of years a patent is renewed and the number of countries in which protection for the same invention is sought - can be used to improve on counts in studies which require a measure of the extent of innovation. A simple renewal based weighting scheme is proposed which may remove half of the noise in patent counts as a measure of innovative output. The paper also illustrates how these data can be used to estimate the value of the proprietary rights created by the patent laws. The parameters estimated in this analysis can be used to answer a series of questions related to the value of patents. We illustrate with estimates of how the value of patent protection would vary under alternative legal rules and renewal fees, and with estimates of the international flows of returns from the patent system. Recent progress in the development of databases has increased the potential for this type of analysis.

Suggested Citation

  • 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.
  • Handle: RePEc:nbr:nberwo:5741
    Note: PR
    as

    Download full text from publisher

    File URL: http://www.nber.org/papers/w5741.pdf
    Download Restriction: no

    References listed on IDEAS

    as
    1. Cornelli, Francesca & Schankerman, Mark, 1996. "Optimal patent renewals," LSE Research Online Documents on Economics 3734, London School of Economics and Political Science, LSE Library.
    2. Simon Kuznets, 1962. "Inventive Activity: Problems of Definition and Measurement," NBER Chapters,in: The Rate and Direction of Inventive Activity: Economic and Social Factors, pages 19-52 National Bureau of Economic Research, Inc.
    3. Adam B. Jaffe & Manuel Trajtenberg & Rebecca Henderson, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, Oxford University Press, vol. 108(3), pages 577-598.
    4. repec:fth:harver:1473 is not listed on IDEAS
    5. Samuel Kortum, 1995. "Research and productivity growth: theory and evidence from patent data," Finance and Economics Discussion Series 95-2, Board of Governors of the Federal Reserve System (U.S.).
    6. Zvi Griliches, 1998. "Patent Statistics as Economic Indicators: A Survey," NBER Chapters,in: R&D and Productivity: The Econometric Evidence, pages 287-343 National Bureau of Economic Research, Inc.
    7. repec:bin:bpeajo:v:20:y:1989:i:1989-3:p:331-410 is not listed on IDEAS
    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 755-784, July.
    9. Jean Olson Lanjouw, 1993. "Patent Protection: Of What Value and for How Long?," NBER Working Papers 4475, National Bureau of Economic Research, Inc.
    10. Francesca Cornelli & Mark Schankerman, 1996. "Optimal Patent Renewals," STICERD - Economics of Industry Papers 13, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
    11. Zvi Griliches, 1998. "Issues in Assessing the Contribution of Research and Development to Productivity Growth," NBER Chapters,in: R&D and Productivity: The Econometric Evidence, pages 17-45 National Bureau of Economic Research, Inc.
    12. Robert Evenson, 1984. "International Invention: Implications for Technology Market Analysis," NBER Chapters,in: R&D, Patents, and Productivity, pages 89-126 National Bureau of Economic Research, Inc.
    13. Lerner, Josh, 1995. "Patenting in the Shadow of Competitors," Journal of Law and Economics, University of Chicago Press, vol. 38(2), pages 463-495, October.
    14. Lach, Saul, 1995. "Patents and productivity growth at the industry level: A first look," Economics Letters, Elsevier, vol. 49(1), pages 101-108, July.
    15. Pakes, Ariel & Griliches, Zvi, 1980. "Patents and R&D at the firm level: A first report," Economics Letters, Elsevier, vol. 5(4), pages 377-381.
    16. Sullivan, Richard J, 1994. "Estimates of the Value of Patent Rights in Great Britain and Ireland, 1852-1876," Economica, London School of Economics and Political Science, vol. 61(241), pages 37-58, February.
    17. Scherer, Frederic Michael, 1996. "The size distribution of profits from innovation," ZEW Discussion Papers 96-13, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
    Full references (including those not matched with items on IDEAS)

    More about this item

    JEL classification:

    • C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Microeconomic Data; Data Access
    • L10 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - General

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nbr:nberwo:5741. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (). General contact details of provider: http://edirc.repec.org/data/nberrus.html .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.