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The Value of Patents as Indicators of Inventive Activity

  • Zvi Griliches
  • Ariel Pakes
  • Bronwyn H. Hall

This paper summarizes a number of studies which use patent data to examine different aspects of technological change. It describes our firm level data set construction effort; reports on the relationship between RLD expenditures and the level of patenting; analyzes the relationship between patents, R&D, and tire stock market value of firms; reports on the estimation of the value of patent rights based on European patent renewal data; and describes the use of patent data to estimate the importance of R&D spillovers. It concludes that patent data represent a valuable resource for the analysis of technological change. They can be used to study longer-run interfirm differences in inventive activity and as a substitute for R&D data where they are not available in the desired detail. It is possible also to use a firm's distribution of patenting by field to infer its position in "technological space" and use it in turn to study how R&D spills over from one firm to another. Moreover, patent renewal data, which are also becoming available in the U.S., allow one to construct more relevant "quality weighted" inventive "output" measures .

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File URL: http://www.nber.org/papers/w2083.pdf
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 2083.

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Date of creation: Nov 1986
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Publication status: published as Griliches, Zvi, Ariel Pakes and Bronwyn H. Hall. "The Value of Patents as Indicatiors of Inventive Activity," Economic Policy and Technical Performance, eds. P. Dasgupta and P. Stoneman, pp. 97-124. Cambridge: Cambridge University Press, 1987.
Handle: RePEc:nbr:nberwo:2083
Note: PR
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  1. Adam B. Jaffe, 1984. "Market Demand, Technological Opportunity and Research Spillovers on R&D Intensity and Productivity Growth," NBER Working Papers 1432, National Bureau of Economic Research, Inc.
  2. Bronwyn H. Hall & Zvi Griliches & Jerry A. Hausman, 1984. "Patents and R&D: Is There A Lag?," NBER Working Papers 1454, National Bureau of Economic Research, Inc.
  3. Pakes, Ariel, 1985. "On Patents, R & D, and the Stock Market Rate of Return," Scholarly Articles 3436409, Harvard University Department of Economics.
  4. Zvi Griliches & Jacques Mairesse, 1981. "Productivity and R and D at the Firm Level," NBER Working Papers 0826, National Bureau of Economic Research, Inc.
  5. Jerry A. Hausman & Bronwyn H. Hall & Zvi Griliches, 1984. "Econometric Models for Count Data with an Application to the Patents-R&D Relationship," NBER Technical Working Papers 0017, National Bureau of Economic Research, Inc.
  6. John Bound & Clint Cummins & Zvi Griliches & Bronwyn H. Hall & Adam B. Jaffe, 1984. "Who Does R&D and Who Patents?," NBER Chapters, in: R&D, Patents, and Productivity, pages 21-54 National Bureau of Economic Research, Inc.
  7. Bronwyn H. Hall & Clint Cumminq & Elizabeth S. Laderman & Joy Mundy, 1988. "The R&D Master File Documentation," NBER Technical Working Papers 0072, National Bureau of Economic Research, Inc.
  8. 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.
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