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Localized knowledge spillovers and patent citations: A distance-based approach

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Author Info

  • Yasusada Murata

    (Advanced Research Institute for the Sciences and Humanities, Nihon University)

  • Ryo Nakajima

    (Department of Economics, Yokohama National University)

  • Ryosuke Okamoto

    (National Graduate Institute for Policy Studies)

  • Ryuichi Tamura

    (Graduate School of Humanities and Social Sciences, University of Tsukuba)

Abstract

The existence of localized knowledge spillovers found by Jaffe, Trajtenberg and Henderson (1993) has recently been challenged by Thompson and Fox-Kean (2005). To settle this debate, we develop a new approach by incorporating their concepts of control patents into the distance-based test of localization (Duranton and Overman, 2005). Using microgeographic data, we identify localization distance for each technology class while allowing for cross-boundary spillovers, unlike the existing literature where localization is detected at the state or metropolitan statistical area level. We find solid evidence supporting localized knowledge spillovers even when finer controls are used. We further relax the commonly made assumption of perfect controls, and show that the majority of technology classes exhibit localization unless hidden biases induced by imperfect controls are extremely large.

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Bibliographic Info

Paper provided by National Graduate Institute for Policy Studies in its series GRIPS Discussion Papers with number 11-11.

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Length: 42 pages
Date of creation: Sep 2011
Date of revision:
Handle: RePEc:ngi:dpaper:11-11

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References

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  1. William R. Kerr & Scott Duke Kominers, 2010. "Agglomerative Forces and Cluster Shapes," NBER Working Papers 16639, National Bureau of Economic Research, Inc.
  2. Nakajima, Ryo & Tamura, Ryuichi & Hanaki, Nobuyuki, 2010. "The effect of collaboration network on inventors' job match, productivity and tenure," Labour Economics, Elsevier, vol. 17(4), pages 723-734, August.
  3. Pierre-Philippe Combes & Gilles Duranton, 2001. "Labor Pooling, Labor Poaching and Spatial Clustering," CEP Discussion Papers dp0510, Centre for Economic Performance, LSE.
  4. Joseph G. Altonji & Todd E. Elder & Christopher R. Taber, 2000. "Selection on Observed and Unobserved Variables: Assessing the Effectiveness of Catholic Schools," NBER Working Papers 7831, National Bureau of Economic Research, Inc.
  5. Gilles Duranton, 2005. "Testing for Localization Using Micro-Geographic Data," Review of Economic Studies, Wiley Blackwell, vol. 72(4), pages 1077-1106, October.
  6. William Kerr & Edward Glaeser & Glenn Ellison, 2007. "What Causes Industry Agglomeration? Evidence from Coagglomeration Patterns," Working Papers 07-13, Center for Economic Studies, U.S. Census Bureau.
  7. Ajay Agrawal & Iain Cockburn & Carlos Rosell, 2010. "Not Invented Here? Innovation in Company Towns," NBER Chapters, in: Cities and Entrepreneurship National Bureau of Economic Research, Inc.
  8. Klaus Desmet & Esteban Rossi-Hansberg, 2010. "Spatial Development," Working Papers 2010.26, Fondazione Eni Enrico Mattei.
  9. Agrawal, Ajay & Kapur, Devesh & McHale, John, 2008. "How do spatial and social proximity influence knowledge flows? Evidence from patent data," Journal of Urban Economics, Elsevier, vol. 64(2), pages 258-269, September.
  10. 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.
  11. 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.
  12. Duranton, Gilles & Martin, Philippe & Mayer, Thierry & Mayneris, Florian, 2010. "The Economics of Clusters: Lessons from the French Experience," OUP Catalogue, Oxford University Press, number 9780199592203, September.
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Citations

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Cited by:
  1. Nakajima, Kentaro & Saito, Yukiko Umeno & Uesugi, Iichiro, 2012. "The Localization of Interfirm Transaction Relationships and Industry Agglomeration," Working Paper Series 17, Center for Interfirm Network, Institute of Economic Research, Hitotsubashi University.
  2. Gerald A. Carlino & Jake Carr & Robert M. Hunt & Tony E. Smith, 2010. "The agglomeration of R&D labs," Working Papers 10-33, Federal Reserve Bank of Philadelphia.
  3. Yasusada Murata & Ryo Nakajima & Ryosuke Okamoto & Ryuichi Tamura, 2013. "Localized knowledge spillovers and patent citations: A distance-based approach (revised version)," GRIPS Discussion Papers 12-18, National Graduate Institute for Policy Studies.
  4. NAKAJIMA Kentaro & SAITO Yukiko Umeno & UESUGI Iichiro, 2012. "Localization of Interfirm Transaction Relationships and Industry Agglomeration," Discussion papers 12023, Research Institute of Economy, Trade and Industry (RIETI).

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