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Measuring Knowledge Spillovers Using Belgian EPO and USPTO Patent Data

  • Joseph Plasmans
  • Ruslan Lukatch

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.

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File URL: http://www.cesifo-group.de/portal/page/portal/DocBase_Content/WP/WP-CESifo_Working_Papers/wp-cesifo-2001/wp-cesifo-2001-03/cesifo_wp430.pdf
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Paper provided by CESifo Group Munich in its series CESifo Working Paper Series with number 430.

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Date of creation: 2001
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Handle: RePEc:ces:ceswps:_430
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  1. Suzumura, Kotaro, 1992. "Cooperative and Noncooperative R&D in an Oligopoly with Spillovers," American Economic Review, American Economic Association, vol. 82(5), pages 1307-20, December.
  2. Adam B. Jaffe & Manuel Trajtenberg, 1998. "International Knowledge Flows: Evidence from Patent Citations," NBER Working Papers 6507, National Bureau of Economic Research, Inc.
  3. Jaffe, A.B. & Trajtenberg, M., 1992. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," Papers 14-92, Tel Aviv.
  4. Raymond De Bondt & Irene Henriques, 1995. "Strategic Investment with Asymmetric Spillovers," Canadian Journal of Economics, Canadian Economics Association, vol. 28(3), pages 656-74, August.
  5. D. Leahy & J. P. Neary, 1997. "R&D spillovers and the case for industrial policy in an open economy," LSE Research Online Documents on Economics 20342, London School of Economics and Political Science, LSE Library.
  6. Zvi Griliches, 1990. "Patent Statistics as Economic Indicators: A Survey," NBER Working Papers 3301, National Bureau of Economic Research, Inc.
  7. Bart Verspagen, 1997. "Measuring Intersectoral Technology Spillovers: Estimates from the European and US Patent Office Databases," Economic Systems Research, Taylor & Francis Journals, vol. 9(1), pages 47-65.
  8. repec:fth:harver:1473 is not listed on IDEAS
  9. Petit, Maria Luisa & Tolwinski, Boleslaw, 1999. "R&D cooperation or competition?," European Economic Review, Elsevier, vol. 43(1), pages 185-208, January.
  10. Tijssen, Robert J. W., 2001. "Global and domestic utilization of industrial relevant science: patent citation analysis of science-technology interactions and knowledge flows," Research Policy, Elsevier, vol. 30(1), pages 35-54, January.
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