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Have university knowledge flows narrowed?: Evidence from patent data

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  • Rosell, Carlos
  • Agrawal, Ajay

Abstract

The rate of university patenting increased dramatically during the 1980s. Did the manner in which knowledge embedded in university patents was managed change during this period of rapid patenting growth? Using a Herfindahl-type measure of knowledge flow concentration and employing a difference-in-differences estimation to compare university-to-firm patent citations across two time periods, we find that the university diffusion premium (the degree to which university knowledge outflows are more widely distributed than those of firms) declined by more than half during the 1980s. In addition, we find that the university diversity premium (the degree to which knowledge inflows used by universities are drawn from a more widely distributed set of prior art holders than those used by firms) also declined by more than half. However, these changes are mostly limited to a narrow set of technology fields (i.e., biotechnology and pharmaceuticals in the outflows case and sub-fields of electronics in the inflows case). The social welfare implications are ambiguous.

Suggested Citation

  • Rosell, Carlos & Agrawal, Ajay, 2009. "Have university knowledge flows narrowed?: Evidence from patent data," Research Policy, Elsevier, vol. 38(1), pages 1-13, February.
  • Handle: RePEc:eee:respol:v:38:y:2009:i:1:p:1-13
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Pluvia Zuniga, 2011. "The State of Patenting at Research Institutions in Developing Countries: Policy Approaches and Practices," WIPO Economic Research Working Papers 04, World Intellectual Property Organization - Economics and Statistics Division, revised Dec 2011.
    2. repec:eee:respol:v:47:y:2018:i:7:p:1334-1343 is not listed on IDEAS
    3. Hugo Pinto, 2011. "Knowledge Transfer in the Mirror: Reflections on the Determinants of Research Groups and Companies Collaborative Patterns within Andalusia's Regional Innovation System," ERSA conference papers ersa11p212, European Regional Science Association.
    4. Francesco Lissoni, 2013. "Intellectual property and university–industry technology transfer," Chapters,in: Public–Private Innovation Networks in Services, chapter 7, pages 164-194 Edward Elgar Publishing.
    5. Nemet, Gregory F. & Johnson, Evan, 2012. "Do important inventions benefit from knowledge originating in other technological domains?," Research Policy, Elsevier, vol. 41(1), pages 190-200.
    6. Lea Kosnik, 2016. "JEL Codes: What Do They Mean and Are They Used Consistently?," Working Papers 1011, University of Missouri-St. Louis, Department of Economics.
    7. repec:wip:wpaper:4 is not listed on IDEAS
    8. repec:kap:jtecht:v:43:y:2018:i:1:d:10.1007_s10961-015-9414-y is not listed on IDEAS
    9. Ani Gerbin & Mateja Drnovsek, 2016. "Determinants and public policy implications of academic-industry knowledge transfer in life sciences: a review and a conceptual framework," The Journal of Technology Transfer, Springer, vol. 41(5), pages 979-1076, October.
    10. repec:spr:scient:v:84:y:2010:i:1:d:10.1007_s11192-010-0194-8 is not listed on IDEAS
    11. Allen Bellas & Lea Kosnik, 2016. "Which Leading Journal Leads? Idea Diffusion in Economics Research Journals," Working Papers 1013, University of Missouri-St. Louis, Department of Economics.
    12. repec:spr:scient:v:96:y:2013:i:1:d:10.1007_s11192-012-0878-3 is not listed on IDEAS
    13. Mary Walshok & Josh Shapiro & Nathan Owens, 2014. "Transnational innovation networks aren’t all created equal: towards a classification system," The Journal of Technology Transfer, Springer, vol. 39(3), pages 345-357, June.

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