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Knowledge diffusion from university and public research. A comparison between US, Japan and Europe using patent citations

  • Emanuele Bacchiocchi

    (University of Milan, Italy.)

  • Fabio Montobbio

    (University of Insubria, Varese and CESPRI - Bocconi University, Milan, Italy.)

This paper estimates the process of diffusion and decay of knowledge from university, public laboratories and corporate patents in six countries and tests the differences across countries and across technological fields using data from the European Patent Office. It finds that university and public research patents are more cited relatively to companies’ patents. However these results are mainly driven by the Chemical, and Drugs & Medical fields and US universities. In Europe and Japan, where the great majority of patents from public reserach comes from national agencies, there is no evidence of a superior fertility of university and public laboratories patents vis `a vis corporate patents. The distribution of the citations lags shows that knowledge embedded in university and public research patents tends to diffuse more rapidly relatively to corporate ones in particular in US, Germany, France and Japan.

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Paper provided by KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy in its series KITeS Working Papers with number 193.

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Length: pages 20
Date of creation: Dec 2006
Date of revision: Dec 2006
Handle: RePEc:cri:cespri:wp193
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  1. Jaffe, Adam B & Trajtenberg, Manuel & Henderson, Rebecca, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, MIT Press, vol. 108(3), pages 577-98, August.
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  5. Stefano Breschi & Francesco Lissoni & Fabio Montobbio, 2005. "The Scientific Productivity of Academic Inventors: New Evidence From Italian Data," KITeS Working Papers 168, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised May 2005.
  6. Bronwyn H. Hall & Adam B. Jaffe & Manuel Trajtenberg, 2001. "The NBER Patent Citation Data File: Lessons, Insights and Methodological Tools," NBER Working Papers 8498, National Bureau of Economic Research, Inc.
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  8. Geuna, Aldo & Nesta, Lionel J.J., 2006. "University patenting and its effects on academic research: The emerging European evidence," Research Policy, Elsevier, vol. 35(6), pages 790-807, July.
  9. Sapsalis, Eleftherios & van Pottelsberghe de la Potterie, Bruno & Navon, Ran, 2006. "Academic versus industry patenting: An in-depth analysis of what determines patent value," Research Policy, Elsevier, vol. 35(10), pages 1631-1645, December.
  10. Sampat, Bhaven N. & Mowery, David C. & Ziedonis, Arvids A., 2003. "Changes in university patent quality after the Bayh-Dole act: a re-examination," International Journal of Industrial Organization, Elsevier, vol. 21(9), pages 1371-1390, November.
  11. Francesco Lissoni & Patrick Llerena & Maureen McKelvey & Bulat Sanditov, 2007. "Academic Patenting in Europe: New Evidence from the KEINS Database," KITeS Working Papers 202, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Jun 2007.
  12. Adam B. Jaffe & Manuel Trajtenberg, 1996. "Flows of Knowledge from Universities and Federal Labs: Modeling the Flowof Patent Citations Over Time and Across Institutional and Geographic Boundari," NBER Working Papers 5712, National Bureau of Economic Research, Inc.
  13. Dietmar Harhoff & Francis Narin & F. M. Scherer & Katrin Vopel, 1999. "Citation Frequency And The Value Of Patented Inventions," The Review of Economics and Statistics, MIT Press, vol. 81(3), pages 511-515, August.
  14. Dosi, Giovanni & Llerena, Patrick & Labini, Mauro Sylos, 2006. "The relationships between science, technologies and their industrial exploitation: An illustration through the myths and realities of the so-called `European Paradox'," Research Policy, Elsevier, vol. 35(10), pages 1450-1464, December.
  15. Keith E. Maskus, 1993. "Intellectual property rights and the Uruguay Round," Economic Review, Federal Reserve Bank of Kansas City, issue Q I, pages 10-25.
  16. Schmiemann, Manfred & Durvy, Jean-Noel, 2003. " New Approaches to Technology Transfer from Publicly Funded Research," The Journal of Technology Transfer, Springer, vol. 28(1), pages 9-15, January.
  17. Balconi, Margherita & Breschi, Stefano & Lissoni, Francesco, 2004. "Networks of inventors and the role of academia: an exploration of Italian patent data," Research Policy, Elsevier, vol. 33(1), pages 127-145, January.
  18. Francesco Lissoni & Bulat Sanditov & Gianluca Tarasconi, 2006. "The Keins Database on Academic Inventors: Methodology and Contents," KITeS Working Papers 181, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Sep 2006.
  19. Mowery, David C. & Ziedonis, Arvids A., 2002. "Academic patent quality and quantity before and after the Bayh-Dole act in the United States," Research Policy, Elsevier, vol. 31(3), pages 399-418, March.
  20. Manuel Trajtenberg & Adam B. Jaffe & Michael S. Fogarty, 2000. "Knowledge Spillovers and Patent Citations: Evidence from a Survey of Inventors," American Economic Review, American Economic Association, vol. 90(2), pages 215-218, May.
  21. Stefano Breschi & Francesco Lissoni, 2004. "Knowledge networks from patent data: Methodological issues and research targets," KITeS Working Papers 150, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Jan 2004.
  22. Fabio Montobbio & E. Bacchiocchi, 2004. "EPO vs. USPTO Citation Lags," KITeS Working Papers 161, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Sep 2004.
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