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Strategic Citation

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  • Ryan Lampe

    (DePaul University)

Abstract

This paper investigates whether patent applicants strategically withhold citations to material prior art. Citation data suggest that applicants withhold between 21% and 33% of relevant citations. Variation in withholdings is explained by patent portfolio size and indicators of patent value. These data also highlight important differences across technology classes. In particular, firms are significantly less likely to withhold a citation when applying for chemical and drug patents. Robustness checks confirm that these results are not explained by inventor and attorney familiarity with citations, patent examiner heterogeneity, or the nationality of the inventor. © 2011 The President and Fellows of Harvard College and the Massachusetts Institute of Technology.

Suggested Citation

  • Ryan Lampe, 2012. "Strategic Citation," The Review of Economics and Statistics, MIT Press, vol. 94(1), pages 320-333, February.
  • Handle: RePEc:tpr:restat:v:94:y:2012:i:1:p:320-333
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    Citations

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    Cited by:

    1. Lei, Zhen & Wright, Brian D., 2017. "Why weak patents? Testing the examiner ignorance hypothesis," Journal of Public Economics, Elsevier, vol. 148(C), pages 43-56.
    2. Gans, Joshua S. & Murray, Fiona E. & Stern, Scott, 2017. "Contracting over the disclosure of scientific knowledge: Intellectual property and academic publication," Research Policy, Elsevier, vol. 46(4), pages 820-835.
    3. repec:bla:jinfst:v:68:y:2017:i:6:p:1360-1374 is not listed on IDEAS
    4. Delcamp, Henry & Leiponen, Aija, 2014. "Innovating standards through informal consortia: The case of wireless telecommunications," International Journal of Industrial Organization, Elsevier, vol. 36(C), pages 36-47.
    5. Cotropia, Christopher A. & Lemley, Mark A. & Sampat, Bhaven, 2013. "Do applicant patent citations matter?," Research Policy, Elsevier, vol. 42(4), pages 844-854.
    6. Antonio Messeni Petruzzelli & Daniele Rotolo & Vito Albino, 2014. "Determinants of Patent Citations in Biotechnology: An Analysis of Patent Influence Across the Industrial and Organizational Boundaries," SPRU Working Paper Series 2014-05, SPRU - Science and Technology Policy Research, University of Sussex.
    7. repec:spr:scient:v:98:y:2014:i:3:d:10.1007_s11192-013-1073-x is not listed on IDEAS
    8. Nelson, Andrew & Earle, Andrew & Howard-Grenville, Jennifer & Haack, Julie & Young, Doug, 2014. "Do innovation measures actually measure innovation? Obliteration, symbolic adoption, and other finicky challenges in tracking innovation diffusion," Research Policy, Elsevier, vol. 43(6), pages 927-940.
    9. Hohberger, Jan, 2016. "Does it pay to stand on the shoulders of giants? An analysis of the inventions of star inventors in the biotechnology sector," Research Policy, Elsevier, vol. 45(3), pages 682-698.
    10. Adam B. Jaffe & Gaétan de Rassenfosse, 2017. "Patent citation data in social science research: Overview and best practices," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 68(6), pages 1360-1374, June.
    11. Corinne Langinier & Philippe Marcoul, 2016. "The Search of Prior Art and the Revelation of Information by Patent Applicants," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 49(3), pages 399-427, November.
    12. Stefan Wagner & Karin Hoisl & Grid Thoma, 2014. "Overcoming localization of knowledge — the role of professional service firms," Strategic Management Journal, Wiley Blackwell, vol. 35(11), pages 1671-1688, November.
    13. OKADA Yoshimi & NAITO Yusuke & NAGAOKA Sadao, 2016. "Contribution of Patent Examination to Making the Patent Scope Consistent with the Invention: Evidence from Japan," Discussion papers 16092, Research Institute of Economy, Trade and Industry (RIETI).
    14. H. Kevin Steensma & Mukund Chari & Ralph Heidl, 2015. "The quest for expansive intellectual property rights and the failure to disclose known relevant prior art," Strategic Management Journal, Wiley Blackwell, vol. 36(8), pages 1186-1204, August.
    15. Chen, Lixin, 2017. "Do patent citations indicate knowledge linkage? The evidence from text similarities between patents and their citations," Journal of Informetrics, Elsevier, vol. 11(1), pages 63-79.
    16. repec:eee:tefoso:v:125:y:2017:i:c:p:236-244 is not listed on IDEAS
    17. repec:eee:respol:v:46:y:2017:i:9:p:1552-1569 is not listed on IDEAS
    18. Michael Roach & Wesley M. Cohen, 2013. "Lens or Prism? Patent Citations as a Measure of Knowledge Flows from Public Research," Management Science, INFORMS, vol. 59(2), pages 504-525, October.

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