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Estimates of the Value of Patent Rights in European Countries During thePost-1950 Period

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  • Mark Schankerman
  • Ariel Pakes

Abstract

This paper examines the distribution of the values of patent rights in the United Kingdom, France, and Germany during the post-1950 period. These values are inferred from the behavior of patentees with respect to payment of renewal fees on their patents. A simple economic model of renewal decisions is combined with data on the proportion of patents renewed at alternative ages and the renewal fee schedules to produce estimates of the distribution (and the total) value of patent rights in these countries. Moreover, the data indicate that there have been changes in the value distribution, and we follow these changes over the period. The empirical results of particular interest concern: the total value of patent rights and the relationship between changes in it and changes in the quantity of patents, the skew in the distribution of patent values, and the rate of obsolescence on the returns to patents.

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  • Mark Schankerman & Ariel Pakes, 1985. "Estimates of the Value of Patent Rights in European Countries During thePost-1950 Period," NBER Working Papers 1650, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:1650
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