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Measuring Knowledge Spillovers Using Belgian EPO and USPTO Patent Data

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  • Joseph Plasmans
  • Ruslan Lukatch

Abstract

This paper investigates two major issues of the patenting behavior of Belgian firms. Firstly, it studies the probabilistic distribution of the patent citations among several major sectors. Secondly, the firm-oriented data is studied to investigate the relationships between the Belgian firms’ size and their patent citation behavior. The modeling results conclude that there is evidence that the smaller firms tend to be more active in patent citation than larger ones. Analyzing the implications from the probabilistic models of citations the paper concludes, that there are different patterns of citation behavior in different sectors. Some sectors exhibit more openness toward inter-firm or inter-industry spillovers, while others do not. Moreover, different industrial sectors exhibit different relationships between the probability of a citation to occur in this sector and the relative time lag between the citing and cited patents.

Suggested Citation

  • Joseph Plasmans & Ruslan Lukatch, 2001. "Measuring Knowledge Spillovers Using Belgian EPO and USPTO Patent Data," CESifo Working Paper Series 430, CESifo.
    • Handle: RePEc:ces:ceswps:_430
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    References listed on IDEAS

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    1. Adam Jaffe & Manuel Trajtenberg, 1999. "International Knowledge Flows: Evidence From Patent Citations," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 8(1-2), pages 105-136.
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    6. repec:fth:harver:1473 is not listed on IDEAS
    7. Suzumura, Kotaro, 1992. "Cooperative and Noncooperative R&D in an Oligopoly with Spillovers," American Economic Review, American Economic Association, vol. 82(5), pages 1307-1320, December.
    8. Leahy, Dermot & Neary, J Peter, 1999. "R&D Spillovers and the Case for Industrial Policy in an Open Economy," Oxford Economic Papers, Oxford University Press, vol. 51(1), pages 40-59, January.
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    Cited by:

    1. Ruslan Lukach & Joseph Plasmans, 2002. "Measuring Knowledge Spillovers Using Patent Citations: Evidence from the Belgian Firm's Data," CESifo Working Paper Series 754, CESifo.
    2. Lukach, R. & Plasmans, J.E.J., 2002. "Measuring Knowledge Spillovers in the New Economy Firms in Belgium Using Patent Citations," Other publications TiSEM c1a4f988-f95e-41fd-9e1d-e, Tilburg University, School of Economics and Management.

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