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The dynamics of patent citations

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Abstract

The use of patent citations as a measure of patent "quality" increased dramatically in recent years. I estimate the hazard of patent citation, and find evidence of unobserved heterogeneity. Hazard estimation provides a means to separate patent quality from citation "inflation."

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File URL: http://irving.vassar.edu/VCEWP/VCEWP84.pdf
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Paper provided by Vassar College Department of Economics in its series Vassar College Department of Economics Working Paper Series with number 84.

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Date of creation: Nov 2006
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Handle: RePEc:vas:papers:84

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References

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  1. Enrico Moretti, 2004. "Workers' Education, Spillovers, and Productivity: Evidence from Plant-Level Production Functions," American Economic Review, American Economic Association, vol. 94(3), pages 656-690, June.
  2. Marco, Alan, 2001. "The Option Value of Patent Litigation: Theory and Evidence," Vassar College Department of Economics Working Paper Series 52, Vassar College Department of Economics, revised Dec 2003.
  3. Jaffe, Adam B & Trajtenberg, Manuel & Henderson, Rebecca, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, MIT Press, vol. 108(3), pages 577-98, August.
  4. 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.
  5. Hagedoorn, John & Cloodt, Myriam, 2003. "Measuring innovative performance: is there an advantage in using multiple indicators?," Research Policy, Elsevier, vol. 32(8), pages 1365-1379, September.
  6. Hall, Bronwyn H & Jaffe, Adam B & Trajtenberg, Manuel, 2001. "The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools," CEPR Discussion Papers 3094, C.E.P.R. Discussion Papers.
  7. Lanjouw, Jean O & Schankerman, Mark, 2001. "Characteristics of Patent Litigation: A Window on Competition," RAND Journal of Economics, The RAND Corporation, vol. 32(1), pages 129-51, Spring.
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Citations

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Cited by:
  1. Prud'homme, Dan, 2012. "A statistical analysis of China's patent quality situation and larger innovation ecosystem," MPRA Paper 51619, University Library of Munich, Germany.
  2. Cornelia Lawson, 2013. "Academic patenting: the importance of industry support," The Journal of Technology Transfer, Springer, vol. 38(4), pages 509-535, August.
  3. Martinelli, Arianna, 2012. "An emerging paradigm or just another trajectory? Understanding the nature of technological changes using engineering heuristics in the telecommunications switching industry," Research Policy, Elsevier, vol. 41(2), pages 414-429.
  4. Meissner Cornelia, 2011. "Academic Patenting: Opportunity, Support or Attitude?," Department of Economics and Statistics Cognetti de Martiis LEI & BRICK - Laboratory of Economics of Innovation "Franco Momigliano", Bureau of Research in Innovation, Complexity and Knowledge, Collegio 201107, University of Turin.
  5. Prud'homme, Dan, 2012. "How certain indigenous innovation and other patent policies hamper innovation in China," MPRA Paper 51710, University Library of Munich, Germany, revised Dec 2012.
  6. Arianna Martinelli & Önder Nomaler, 2014. "Measuring knowledge persistence: a genetic approach to patent citation networks," Journal of Evolutionary Economics, Springer, vol. 24(3), pages 623-652, July.
  7. Sandner, Philipp G. & Block, Joern, 2011. "The market value of R&D, patents, and trademarks," Research Policy, Elsevier, vol. 40(7), pages 969-985, September.
  8. Jan Van Hove, 2008. "The Impact of R&D Spillovers on Export Value: Does the Transmission Channel matter?," Working Papers 2008.3, International Network for Economic Research - INFER.
  9. Aditi Mehta & Marc Rysman & Tim Simcoe, 2006. "Identifying the Age Profile of Patent Citations," Boston University - Department of Economics - Working Papers Series WP2006-022, Boston University - Department of Economics.
  10. 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.
  11. Blomkvist, Katarina & Kappen, Philip & Zander, Ivo, 2014. "Superstar inventors—Towards a people-centric perspective on the geography of technological renewal in the multinational corporation," Research Policy, Elsevier, vol. 43(4), pages 669-682.
  12. Christian Ghiglino & Nicole Kuschy, 2010. "Are Patent Citations Driven by Quality?," Economics Discussion Papers 692, University of Essex, Department of Economics.
  13. Wozniak, David, 2012. "Gender differences in a market with relative performance feedback: Professional tennis players," Journal of Economic Behavior & Organization, Elsevier, vol. 83(1), pages 158-171.
  14. Prud'homme, Dan, 2012. "Dulling the Cutting Edge: How Patent-Related Policies and Practices Hamper Innovation in China," MPRA Paper 43299, University Library of Munich, Germany, revised Dec 2012.
  15. Patel, Darshak & Ward, Michael R., 2011. "Using patent citation patterns to infer innovation market competition," Research Policy, Elsevier, vol. 40(6), pages 886-894, July.

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