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Valeur et obsolescence des brevets : une analyse des statistiques de renouvellement des brevets européens

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  • Mark Schankerman
  • Ariel Pakes

Abstract

[fre] Cette étude est une tentative pour estimer le taux d'obsolescence des revenus rapportés par un brevet, ainsi que la distribution de ces revenus. Les estimations sont fondées sur un modèle simple de renouvellement des brevets et sur deux ensembles de données :. le premier pour quatre pays européens sur les années 1930-1939, le second plus détaillé pour la France entre 1950 et 1979. On trouve principalement que le taux d'obsolescence des brevets est très élevé, aussi bien avant-qu'après-guerre, et que la valeur économique des brevets a une distribution très asymétrique, la plupart des brevets n'ayant qu'une valeur économique très faible. Les statistiques de renouvellement des brevets apparaissent ainsi comme une source d'information intéressante sur la distribution de leurs valeurs, pouvant permettre notamment des comparaisons entre pays et secteurs, et entre différentes périodes. [eng] The rate of obsolescence and the distribution. Of patent values : some evidence from european patent. Renewals. Mark Schankerman, Ariel Pakes. This paper presents econometric estimates of the rate of obsolescence and the distribution of the private value of holding patents. The estimates are derived by combining information on patent renewals and renewal fees in Europeen countries with a simple economic model of the renewal decision of patent holders. The model is applied to two sets of data the first covering four European countries during the period 1930-1939, and the second including all patent applications mode in France during 1950-1979. Two principal empirical findings emerge. First, the private rate of obsolescence is high, both from the prewar and the post-war data. Second, the distribution of the value of holding patents is sharply skewed to the right. More broadly, the results suggest the potential use of patent renewal data for measuring the value of patent rights in different sectors and countries and over time.

Suggested Citation

  • Mark Schankerman & Ariel Pakes, 1985. "Valeur et obsolescence des brevets : une analyse des statistiques de renouvellement des brevets européens," Revue Économique, Programme National Persée, vol. 36(5), pages 917-942.
  • Handle: RePEc:prs:reveco:reco_0035-2764_1985_num_36_5_408876
    DOI: 10.3406/reco.1985.408876
    Note: DOI:10.3406/reco.1985.408876
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    Cited by:

    1. Marc Baudry & Adrien Hervouet, 2017. "The private value of plant variety protection and the impact of exemption rules," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 26(3), pages 202-226, April.
    2. Gilles Koléda, 2005. "La valeur de la protection des brevets français appréciée par leurs renouvellements," Économie et Prévision, Programme National Persée, vol. 168(2), pages 97-114.
    3. Jacques Mairesse & Mohamed Sassenou, 1991. "R&D Productivity: A Survey of Econometric Studies at the Firm Level," NBER Working Papers 3666, National Bureau of Economic Research, Inc.
    4. Mabrouki, Mohamed, 2017. "Analyse empirique de la relation entre les décisions de renouvellement des brevets et les montants d’annuités [Empirical analysis of the relationship between patent renewal decisions and the amount," MPRA Paper 80484, University Library of Munich, Germany.

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