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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.

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Bibliographic Info

Article provided by Elsevier in its journal Research Policy.

Volume (Year): 38 (2009)
Issue (Month): 1 (February)
Pages: 1-13

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Handle: RePEc:eee:respol:v:38:y:2009:i:1:p:1-13

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Web page: http://www.elsevier.com/locate/respol

Related research

Keywords: University patents Bayh-Dole Act Knowledge flows Anti-commons Diffusion;

References

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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.:
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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. 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.
  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. repec:wip:wpaper:4 is not listed on IDEAS

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