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Patent Citations and the Geography of Knowledge Spillovers: Evidence from Inventor- and Examiner-added Citations

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Author Info
Peter Thompson

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Abstract

I report new evidence for localized knowledge spillovers identified by within-patent variations in the geographic matching rates of citations added by inventors and citations added by examiners. Evaluated at the mean citation lag, inventor citations are 20% more likely than examiner citations to match the country of origin of their citing patent, whereas U.S. inventor citations are 25% more likely to match the state or metropolitan area of their citing patent. The localization of intranational knowledge spillovers declines with the passage of time, but international borders present a persistent barrier to spillovers. Copyright Copyright by the President and Fellows of Harvard College and the Massachusetts Institute of Technology.

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File URL: http://www.mitpressjournals.org/doi/pdfplus/10.1162/rest.88.2.383
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Publisher Info
Article provided by MIT Press in its journal The Review of Economics and Statistics.

Volume (Year): 88 (2006)
Issue (Month): 2 (06)
Pages: 383-388
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Handle: RePEc:tpr:restat:v:88:y:2006:i:2:p:383-388

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Charles F. Manski, 2000. "Economic Analysis of Social Interactions," Journal of Economic Perspectives, American Economic Association, vol. 14(3), pages 115-136, Summer. [Downloadable!] (restricted)
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  2. Peter Thompson & Melanie Fox-Kean, 2005. "Patent Citations and the Geography of Knowledge Spillovers: A Reassessment: Reply," American Economic Review, American Economic Association, vol. 95(1), pages 465-466, March. [Downloadable!]
  3. Ajay Agrawal & Iain Cockburn & John McHale, 2003. "Gone But Not Forgotten: Labor Flows, Knowledge Spillovers, and Enduring Social Capital," NBER Working Papers 9950, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  4. Chamberlain, Gary, 1980. "Analysis of Covariance with Qualitative Data," Review of Economic Studies, Blackwell Publishing, vol. 47(1), pages 225-38, January. [Downloadable!] (restricted)
  5. 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. [Downloadable!]
  6. Iain M. Cockburn & Samuel Kortum & Scott Stern, 2002. "Are All Patent Examiners Equal? The Impact of Examiner Characteristics," NBER Working Papers 8980, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  7. Peter Thompson & Melanie Fox-Kean, 2005. "Patent Citations and the Geography of Knowledge Spillovers: A Reassessment," American Economic Review, American Economic Association, vol. 95(1), pages 450-460, March. [Downloadable!]
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  8. Romer, Paul M, 1990. "Endogenous Technological Change," Journal of Political Economy, University of Chicago Press, vol. 98(5), pages S71-102, October. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Ioana Popovici, 2005. "Outward R&D and Knowledge Spillovers: Evidence Using Patent Citations," Working Papers 0516, Florida International University, Department of Economics. [Downloadable!]
  2. William R. Kerr, 2009. "Breakthrough Inventions and Migrating Clusters of Innovation," NBER Working Papers 15443, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  3. Ioana Popovici, 2006. "Impact of Intellectual Property Rights Reforms on the Diffusion of Knowledge through FDI," Working Papers 0602, Florida International University, Department of Economics. [Downloadable!]
  4. Edward L. Glaeser & William R. Kerr, 2008. "Local Industrial Conditions and Entrepreneurship: How Much of the Spatial Distribution Can We Explain?," Harvard Business School Working Papers 09-055, Harvard Business School. [Downloadable!]
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  5. William R. Kerr, 2005. "Ethnic Scientific Communities and International Technology Diffusion," Harvard Business School Working Papers 06-022, Harvard Business School, revised Apr 2007. [Downloadable!]
    Other versions:
  6. Ajay K. Agrawal & Iain M. Cockburn & Carlos Rosell, 2009. "Not Invented Here? Innovation in Company Towns," NBER Working Papers 15437, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  7. Raffaele Paci & Stefano Usai, 2007. "Knowledge flows across European regions," Working Paper CRENoS 200704, Centre for North South Economic Research, University of Cagliari and Sassari, Sardinia. [Downloadable!]
    Other versions:
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