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Patent Citations and the Geography of Knowledge Spillovers: A Reassessment

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Author Info
Peter Thompson () (Department of Economics, Florida International University)
Melanie Fox Kean (Department of Economics, University of Houston)

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Abstract

Jaffe, Trajtenberg and Henderson (Quarterly Journal of Economics, 108(3):577-98, 1993) developed a matching method to study the geography of knowledge spillovers using patent citations, and found that knowledge spillovers are strongly localized. Their method matches each citing patent to a non-citing patent intended to control for the pre-existing geographic concentration of production. We show how the method of selecting the control group may induce spurious evidence of localized spillovers. This paper reassesses their findings using control patents selected under different criteria. Doing so eliminates evidence of strong intranational localization effects at the state and metropolitan levels, but leaves largely unaffected evidence of international localization effects.

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File URL: http://www.fiu.edu/orgs/economics/wp2004/04-01.pdf
File Format: application/pdf
File Function: Revised version, 2004
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Publisher Info
Paper provided by Florida International University, Department of Economics in its series Working Papers with number 0401.

Download reference. The following formats are available: HTML (with abstract), plain text (with abstract), BibTeX, RIS (EndNote, RefMan, ProCite), ReDIF
Length: 22 pages
Date of creation: Jan 2004
Date of revision:
Publication status: Published in American Economic Review, 95(1):450-460 (March 2005).
Handle: RePEc:fiu:wpaper:0401

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Related research
Keywords: patent citations; knowledge spillovers; geography;

Other versions of this item:

Find related papers by JEL classification:
O31 - Economic Development, Technological Change, and Growth - - Technological Change - - - Innovation and Invention: Processes and Incentives
O34 - Economic Development, Technological Change, and Growth - - Technological Change - - - Intellectual Property Rights

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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. Jaffe, A.B. & Trajtenberg, M., 1998. "International Knowledge Flows: Evidence from Patent Citation," Papers 11-98, Tel Aviv.
    Other versions:
  2. Bronwyn H. Hall, Adam Jaffe and Manuel Trajtenberg., 2000. "Market Value and Patent Citations: A First Look," Economics Working Papers E00-277, University of California at Berkeley. [Downloadable!]
    Other versions:
  3. Peter Thompson & Melanie Fox Kean, 2004. "Patent Citations and the Geography of Knowledge Spillovers: A Reassessment," Working Papers 0401, Florida International University, Department of Economics. [Downloadable!]
    Other versions:
  4. Glaeser, Edward L., 1999. "Learning in Cities," Journal of Urban Economics, Elsevier, vol. 46(2), pages 254-277, September. [Downloadable!] (restricted)
    Other versions:
  5. 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. [Downloadable!] (restricted)
    Other versions:
  6. 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. [Downloadable!] (restricted)
    Other versions:
  7. Manuel Trajtenberg, 1990. "A Penny for Your Quotes: Patent Citations and the Value of Innovations," RAND Journal of Economics, The RAND Corporation, vol. 21(1), pages 172-187, Spring. [Downloadable!] (restricted)
Full references

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. Quella, Núria, 2007. "Intra- and Inter-Sectoral Knowledge Spillovers and TFP Growth Rates," MPRA Paper 2853, University Library of Munich, Germany. [Downloadable!]
    Other versions:
  2. Aditi Mehta & Marc Rysman & Tim Simcoe, 2007. "Identifying the Age Profile of Patent Citations," Boston University - Department of Economics - Working Papers Series WP2007-021, Boston University - Department of Economics. [Downloadable!]
    Other versions:
  3. Manfred M. Fischer & Thomas Scherngell & Eva Jansenberger, 2005. "The Geography of Knowledge Spillovers between High-Technology Firms in Europe - Evidence from a Spatial Interaction Modelling Perspective," ERSA conference papers ersa05p5, European Regional Science Association. [Downloadable!]
  4. Y. Abdih & Frederick Joutz, 2005. "Relating the Knowledge Production Function to Total Factor productivity: An Endogenous Growth Puzzle," IMF Working Papers 05/74, International Monetary Fund. [Downloadable!]
  5. Stefano Breschi & Francesco Lissoni, 2004. "Knowledge networks from patent data: Methodological issues and research targets," CESPRI Working Papers 150, CESPRI, Centre for Research on Innovation and Internationalisation, Universita' Bocconi, Milano, Italy, revised Jan 2004. [Downloadable!]
  6. Gerald Carlino & Satyajit Chatterjee & Robert Hunt, 2005. "Matching and learning in cities: urban density and the rate of invention," Working Papers 04-16, Federal Reserve Bank of Philadelphia. [Downloadable!]
    Other versions:
  7. Andersson, Martin & Ejermo, Olof, 2004. "How does Accessibility to Knowledge Sources affect the Innovativeness of Corporations? - Evidence from Sweden," Working Paper Series in Economics and Institutions of Innovation 3, Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies. [Downloadable!]
    Other versions:
  8. Ioana Popovici, 2005. "Outward R&D and Knowledge Spillovers: Evidence Using Patent Citations," Working Papers 0516, Florida International University, Department of Economics. [Downloadable!]
  9. Fabian Waldinger, 2009. "Peer Effects in Science - Evidence from the Dismissal of Scientists in Nazi Germany," CEP Discussion Papers dp0910, Centre for Economic Performance, LSE. [Downloadable!]
  10. Edward L. Glaeser & William R. Kerr, 2008. "Local Industrial Conditions and Entrepreneurship: How Much of the Spatial Distribution Can We Explain?," NBER Working Papers 14407, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
  11. Ejermo, Olof, 2006. "Are quality-adjusted patents more geographically clustered than raw patent counts? Evidence using Swedish data," CIRCLE Electronic Working Paper Series 2006-14, CIRCLE (Centre for Innovation, Research and Competence in the Learning Economy), Lund University. [Downloadable!]
  12. Julio Rosa & Pierre Mohnen, 2008. "Knowledge Transfers between Canadian Business Enterprises and Universities: Does Distance Matter?," CIRANO Working Papers 2008s-09, CIRANO. [Downloadable!]
    Other versions:
  13. William R. Kerr, 2008. "The Agglomeration of US Ethnic Inventors," Harvard Business School Working Papers 09-003, Harvard Business School. [Downloadable!]
  14. Criscuolo,Paola & Verspagen ,Bart, 2005. "Does it matter where patent citations come from? Inventor versus examiner citations in European patents," Research Memoranda 017, Maastricht : MERIT, Maastricht Economic Research Institute on Innovation and Technology. [Downloadable!]
    Other versions:
  15. Rebecca Henderson & Adam Jaffe & Manuel Trajtenberg, 2005. "Patent Citations and the Geography of Knowledge Spillovers: A Reassessment: Comment," American Economic Review, American Economic Association, vol. 95(1), pages 461-464, March. [Downloadable!]
  16. 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!]
  17. Peter Thompson, 2004. "Patent Citations and the Geography of Knowledge Spillovers: Evidence from Inventor- and Examiner-Added Citations," Working Papers 0405, Florida International University, Department of Economics, revised Jun 2005. [Downloadable!]
    Other versions:
  18. 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!]
    Other versions:
  19. Zoltan Acs & Pontus Braunerhjelm & David Audretsch & Bo Carlsson, 2009. "The knowledge spillover theory of entrepreneurship," Small Business Economics, Springer, vol. 32(1), pages 15-30, January. [Downloadable!] (restricted)
    Other versions:
  20. Ejermo, Olof, 2007. "Regional innovation measured by patent data – does quality matter?," CIRCLE Electronic Working Paper Series 2007-08, CIRCLE (Centre for Innovation, Research and Competence in the Learning Economy), Lund University. [Downloadable!]
  21. Ajay Agrawal & Devesh Kapur & John McHale, 2007. "Birds of a Feather - Better Together? Exploring the Optimal Spatial Distribution of Ethnic Inventors," NBER Working Papers 12823, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  22. Ajay Agrawal & Devesh Kapur & John McHale, 2008. "Brain Drain or Brain Bank? The Impact of Skilled Emigration on Poor-Country Innovation," NBER Working Papers 14592, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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