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Spatial differences in the quality of university patenting: Do regions matter?

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  • Acosta, Manuel
  • Coronado, Daniel
  • Martínez, M. Ángeles

Abstract

This paper uses patent citation data to analyze the quality of university technology across European regions. The empirical analysis draws on a panel dataset of 4580 European university-owned patents classified by 202 European regions over the period 1998–2004. The methodology involves a multilevel framework to identify the effects of factors at three hierarchical levels (individual, university, and regional) on the quality of university patenting. The results suggest that regional factors, such as the level of development, industrial potential, and regional higher education R&D expenditure, do not play any significant role in determining the quality of European university patents. We instead find that the factors affecting patent quality stem from their specific characteristics. We also find that university size does not explain the quality of patents. However, there is significant unobserved heterogeneity at the university level in all models, suggesting that differences in other university characteristics explain a substantial part of the variance in patent quality.

Suggested Citation

  • Acosta, Manuel & Coronado, Daniel & Martínez, M. Ángeles, 2012. "Spatial differences in the quality of university patenting: Do regions matter?," Research Policy, Elsevier, vol. 41(4), pages 692-703.
    • Handle: RePEc:eee:respol:v:41:y:2012:i:4:p:692-703
    DOI: 10.1016/j.respol.2012.01.002
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    1. Claudine Gay & William Latham & Christian Le Bas, 2008. "Collective Knowledge, Prolific Inventors And The Value Of Inventions: An Empirical Study Of French, German And British Patents In The Us, 1975-1999," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 17(1-2), pages 5-22.
    2. Branco Ponomariov, 2008. "Effects of university characteristics on scientists’ interactions with the private sector: an exploratory assessment," The Journal of Technology Transfer, Springer, vol. 33(5), pages 485-503, October.
    3. Friedman, Joseph & Silberman, Jonathan, 2003. "University Technology Transfer: Do Incentives, Management, and Location Matter?," The Journal of Technology Transfer, Springer, vol. 28(1), pages 17-30, January.
    4. Yoshiko Okubo & Michel Zitt, 2004. "Searching for research integration across Europe: a closer look at international and inter-regional collaboration in France," Science and Public Policy, Oxford University Press, vol. 31(3), pages 213-226, June.
    5. Francesco Lissoni & Patrick Llerena & Maureen McKelvey & Bulat Sanditov, 2008. "Academic patenting in Europe: new evidence from the KEINS database," Research Evaluation, Oxford University Press, vol. 17(2), pages 87-102, June.
    6. David C. Mowery & Bhaven N. Sampat & Arvids A. Ziedonis, 2002. "Learning to Patent: Institutional Experience, Learning, and the Characteristics of U.S. University Patents After the Bayh-Dole Act, 1981-1992," Management Science, INFORMS, vol. 48(1), pages 73-89, January.
    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.
    8. 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.
    9. Rolf Sternberg & Christine Tamasy, 1999. "Munich as Germany's No. 1 High Technology Region: Empirical Evidence, Theoretical Explanations and the Role of Small Firm/Large Firm Relationships," Regional Studies, Taylor & Francis Journals, vol. 33(4), pages 367-377.
    10. Rebecca Henderson & Adam B. Jaffe & Manuel Trajtenberg, 1998. "Universities As A Source Of Commercial Technology: A Detailed Analysis Of University Patenting, 1965-1988," The Review of Economics and Statistics, MIT Press, vol. 80(1), pages 119-127, February.
    11. Gittelman, Michelle, 2006. "National institutions, public-private knowledge flows, and innovation performance: A comparative study of the biotechnology industry in the US and France," Research Policy, Elsevier, vol. 35(7), pages 1052-1068, September.
    12. A. Varga, 2006. "Spatial Knowledge Spillovers and University Research: Evidence from Austria," Springer Books, in: Innovation, Networks, and Knowledge Spillovers, chapter 10, pages 211-232, Springer.
    13. Maryann Feldman & Pierre Desrochers, 2003. "Research Universities and Local Economic Development: Lessons from the History of the Johns Hopkins University," Industry and Innovation, Taylor & Francis Journals, vol. 10(1), pages 5-24.
    14. Leydesdorff, Loet, 2000. "The triple helix: an evolutionary model of innovations," Research Policy, Elsevier, vol. 29(2), pages 243-255, February.
    15. Geuna, Aldo & Rossi, Federica, 2011. "Changes to university IPR regulations in Europe and the impact on academic patenting," Research Policy, Elsevier, vol. 40(8), pages 1068-1076, October.
    16. Luc Anselin & Attila Varga & Zoltan Acs, 2008. "Local Geographic Spillovers Between University Research and High Technology Innovations," Chapters, in: Entrepreneurship, Growth and Public Policy, chapter 9, pages 95-121, Edward Elgar Publishing.
    17. Feldman, Maryann P. & Audretsch, David B., 1999. "Innovation in cities:: Science-based diversity, specialization and localized competition," European Economic Review, Elsevier, vol. 43(2), pages 409-429, February.
    18. Jaffe, Adam B, 1989. "Real Effects of Academic Research," American Economic Review, American Economic Association, vol. 79(5), pages 957-970, December.
    19. Fini, Riccardo & Grimaldi, Rosa & Santoni, Simone & Sobrero, Maurizio, 2011. "Complements or substitutes? The role of universities and local context in supporting the creation of academic spin-offs," Research Policy, Elsevier, vol. 40(8), pages 1113-1127, October.
    20. Bruno Van Pottelsberghe & Eleftherios Sapsalis & Ran Navon, 2006. "Academic vs. industry patenting: an in-depth analysis of what determines patent value," ULB Institutional Repository 2013/6197, ULB -- Universite Libre de Bruxelles.
    21. Verspagen, Bert & Schoenmakers, Wilfred, 2000. "The Spatial Dimension of Knowledge Spillovers in Europe: Evidence from Firm Patenting Data," Research Memorandum 016, Maastricht University, Maastricht Economic Research Institute on Innovation and Technology (MERIT).
    22. D. Schartinger & C. Rammer & J. Fröhlich, 2006. "Knowledge Interactions between Universities and Industry in Austria: Sectoral Patterns and Determinants," Springer Books, in: Innovation, Networks, and Knowledge Spillovers, chapter 7, pages 135-166, Springer.
    23. Eleftherios Sapsalis & Bruno van Pottelsberghe de la Potterie, 2007. "The Institutional Sources Of Knowledge And The Value Of Academic Patents," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 16(2), pages 139-157.
    24. Thursby, Jerry G. & Kemp, Sukanya, 2002. "Growth and productive efficiency of university intellectual property licensing," Research Policy, Elsevier, vol. 31(1), pages 109-124, January.
    25. Marco, Alan C., 2007. "The dynamics of patent citations," Economics Letters, Elsevier, vol. 94(2), pages 290-296, February.
    26. D'Este, P. & Patel, P., 2007. "University-industry linkages in the UK: What are the factors underlying the variety of interactions with industry?," Research Policy, Elsevier, vol. 36(9), pages 1295-1313, November.
    27. Albert, M. B. & Avery, D. & Narin, F. & McAllister, P., 1991. "Direct validation of citation counts as indicators of industrially important patents," Research Policy, Elsevier, vol. 20(3), pages 251-259, June.
    28. Joaquín M Azagra Caro & Ignacio Fernández de Lucio & Antonio Gutiérrez Gracia, 2003. "University patents: output and input indicators … of what?," Research Evaluation, Oxford University Press, vol. 12(1), pages 5-16, April.
    29. 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.
    30. Michael Fritsch & Viktor Slavtchev, 2007. "Universities and Innovation in Space," Industry and Innovation, Taylor & Francis Journals, vol. 14(2), pages 201-218.
    31. Paula Stephan & Shiferaw Gurmu & Albert Sumell & Grant Black, 2007. "Who'S Patenting In The University? Evidence From The Survey Of Doctorate Recipients," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 16(2), pages 71-99.
    32. 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.
    33. Harhoff, Dietmar & Scherer, Frederic M. & Vopel, Katrin, 2003. "Citations, family size, opposition and the value of patent rights," Research Policy, Elsevier, vol. 32(8), pages 1343-1363, September.
    34. Jeffrey M. Wooldridge, 2003. "Cluster-Sample Methods in Applied Econometrics," American Economic Review, American Economic Association, vol. 93(2), pages 133-138, May.
    35. Philip Cooke, 2005. "Rational drug design, the knowledge value chain and bioscience megacentres," Cambridge Journal of Economics, Oxford University Press, vol. 29(3), pages 325-341, May.
    36. Giuliani, Elisa & Arza, Valeria, 2009. "What drives the formation of 'valuable' university-industry linkages?: Insights from the wine industry," Research Policy, Elsevier, vol. 38(6), pages 906-921, July.
    37. Yong-Gil Lee & Jeong-Dong Lee & Yong-Il Song & Se-Jun Lee, 2007. "An in-depth empirical analysis of patent citation counts using zero-inflated count data model: The case of KIST," Scientometrics, Springer;Akadémiai Kiadó, vol. 70(1), pages 27-39, January.
    38. Mansfield, Edwin & Lee, Jeong-Yeon, 1996. "The modern university: contributor to industrial innovation and recipient of industrial R&D support," Research Policy, Elsevier, vol. 25(7), pages 1047-1058, October.
    39. Lundvall, Bengt-Ake & Johnson, Bjorn & Andersen, Esben Sloth & Dalum, Bent, 2002. "National systems of production, innovation and competence building," Research Policy, Elsevier, vol. 31(2), pages 213-231, February.
    40. Bessen, James, 2008. "The value of U.S. patents by owner and patent characteristics," Research Policy, Elsevier, vol. 37(5), pages 932-945, June.
    41. Antweiler, Werner, 2001. "Nested random effects estimation in unbalanced panel data," Journal of Econometrics, Elsevier, vol. 101(2), pages 295-313, April.
    42. Jun Koo, 2007. "Determinants of Localized Technology Spillovers: Role of Regional and Industrial Attributes," Regional Studies, Taylor & Francis Journals, vol. 41(7), pages 995-1011.
    43. Coupe, Tom, 2003. "Science Is Golden: Academic R&D and University Patents," The Journal of Technology Transfer, Springer, vol. 28(1), pages 31-46, January.
    44. Egbert Wever & Erik Stam, 1999. "Clusters of High Technology SMEs: The Dutch Case," Regional Studies, Taylor & Francis Journals, vol. 33(4), pages 391-400.
    45. Perkmann, Markus & King, Zella & Pavelin, Stephen, 2011. "Engaging excellence? Effects of faculty quality on university engagement with industry," Research Policy, Elsevier, vol. 40(4), pages 539-552, May.
    46. Patrick Thomas & Anthony Breitzman, 2006. "A method for identifying hot patents and linking them to government-funded scientific research," Research Evaluation, Oxford University Press, vol. 15(2), pages 145-152, August.
    47. Philip Cooke, 2004. "Regional knowledge capabilities, embeddedness of firms and industry organisation: Bioscience megacentres and economic geography," European Planning Studies, Taylor & Francis Journals, vol. 12(5), pages 625-641, July.
    48. 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.
    49. Carpenter, Mark P. & Narin, Francis & Woolf, Patricia, 1981. "Citation rates to technologically important patents," World Patent Information, Elsevier, vol. 3(4), pages 160-163, October.
    50. Baldini, Nicola & Grimaldi, Rosa & Sobrero, Maurizio, 2006. "Institutional changes and the commercialization of academic knowledge: A study of Italian universities' patenting activities between 1965 and 2002," Research Policy, Elsevier, vol. 35(4), pages 518-532, May.
    51. Goldfarb, Brent & Henrekson, Magnus, 2003. "Bottom-up versus top-down policies towards the commercialization of university intellectual property," Research Policy, Elsevier, vol. 32(4), pages 639-658, April.
    52. Saul Lach & Mark Schankerman, 2004. "Royalty Sharing and Technology Licensing in Universities," Journal of the European Economic Association, MIT Press, vol. 2(2-3), pages 252-264, 04/05.
    53. Mario Calderini & Giuseppe Scellato, 2005. "Academic research, technological specialization and the innovation performance in European regions: an empirical analysis in the wireless sector," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 14(2), pages 279-305, April.
    54. Burke, Paul F. & Reitzig, Markus, 2007. "Measuring patent assessment quality--Analyzing the degree and kind of (in)consistency in patent offices' decision making," Research Policy, Elsevier, vol. 36(9), pages 1404-1430, November.
    55. Saragossi, Sarina & van Pottelsberghe de la Potterie, Bruno, 2003. "What Patent Data Reveal about Universities: The Case of Belgium," The Journal of Technology Transfer, Springer, vol. 28(1), pages 47-51, January.
    56. Mansfield, Edwin, 1995. "Academic Research Underlying Industrial Innovations:," The Review of Economics and Statistics, MIT Press, vol. 77(1), pages 55-65, February.
    57. Réjean Landry & Nabil Amara & Mathieu Ouimet, 2007. "Determinants of knowledge transfer: evidence from Canadian university researchers in natural sciences and engineering," The Journal of Technology Transfer, Springer, vol. 32(6), pages 561-592, December.
    58. C. Gay & C. Le Bas & P. Patel & K. Touach, 2005. "The determinants of patent citations: an empirical analysis of French and British patents in the US," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 14(5), pages 339-350.
    59. Nicola Baldini, 2006. "University patenting and licensing activity: a review of the literature," Research Evaluation, Oxford University Press, vol. 15(3), pages 197-207, December.
    60. Michelle Gittelman & Bruce Kogut, 2003. "Does Good Science Lead to Valuable Knowledge? Biotechnology Firms and the Evolutionary Logic of Citation Patterns," Management Science, INFORMS, vol. 49(4), pages 366-382, April.
    61. Manuel Acosta & Daniel Coronado & M. Dolores Leon & M. Angeles Martinez, 2009. "Production of University Technological Knowledge in European Regions: Evidence from Patent Data," Regional Studies, Taylor & Francis Journals, vol. 43(9), pages 1167-1181.
    62. Maurseth, Per Botolf & Verspagen, Bart, 2002. " Knowledge Spillovers in Europe: A Patent Citations Analysis," Scandinavian Journal of Economics, Wiley Blackwell, vol. 104(4), pages 531-545, December.
    63. Moulton, Brent R, 1990. "An Illustration of a Pitfall in Estimating the Effects of Aggregate Variables on Micro Unit," The Review of Economics and Statistics, MIT Press, vol. 72(2), pages 334-338, May.
    64. Jean O. Lanjouw & Mark Schankerman, 2004. "Patent Quality and Research Productivity: Measuring Innovation with Multiple Indicators," Economic Journal, Royal Economic Society, vol. 114(495), pages 441-465, April.
    65. 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.
    66. Agrawal, Ajay & Cockburn, Iain, 2003. "The anchor tenant hypothesis: exploring the role of large, local, R&D-intensive firms in regional innovation systems," International Journal of Industrial Organization, Elsevier, vol. 21(9), pages 1227-1253, November.
    67. Jeremy D. Foltz & Kwansoo Kim & Bradford Barham, 2003. "A Dynamic Analysis of University Agricultural Biotechnology Patent Production," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 85(1), pages 187-197.
    68. Per Botolf Maurseth & Bart Verspagen, 2002. "Knowledge Spillovers in Europe: A Patent Citations Analysis," Scandinavian Journal of Economics, Wiley Blackwell, vol. 104(4), pages 531-545, December.
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    More about this item

    Keywords

    European regions; University patents; Forward patent citation; Patent quality; Multilevel models;
    All these keywords.

    JEL classification:

    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O32 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Management of Technological Innovation and R&D
    • C29 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Other

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