The dynamics of patent citations

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The dynamics of patent citations

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Marco, Alan C. () (Vassar College Department of Economics)

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Alan C. Marco

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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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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Article
- Marco, Alan C., 2007. "The dynamics of patent citations," Economics Letters, Elsevier, vol. 94(2), pages 290-296, February. [Downloadable!] (restricted)

This paper has been announced in the following NEP Reports:

NEP-ALL-2007-01-13 (All new papers)
NEP-INO-2007-01-13 (Innovation)
NEP-IPR-2007-01-13 (Intellectual Property Rights)

References listed on IDEAS
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.:

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.
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. [Downloadable!] (restricted)
Hall, B. & Jaffe, A. & Trajtenberg, M., 2001. "The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools," Papers 2001-29, Tel Aviv.
Other versions:
- Bronwyn H. Hall & Adam B. Jaffe & Manuel Trajtenberg, 2001. "The NBER Patent Citation Data File: Lessons, Insights and Methodological Tools," NBER Working Papers 8498, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
- 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. [Downloadable!] (restricted)
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. [Downloadable!] (restricted)
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. [Downloadable!]
Marco, Alan C., 2005. "The option value of patent litigation: Theory and evidence," Review of Financial Economics, Elsevier, vol. 14(3-4), pages 323-351. [Downloadable!] (restricted)
Other versions:
- 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. [Downloadable!]
Adam B. Jaffe & Manuel Trajtenberg & Rebecca Henderson, 1992. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," NBER Working Papers 3993, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
Other versions:
- Jaffe, A.B. & Trajtenberg, M., 1992. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," Papers 14-92, Tel Aviv.
- 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. [Downloadable!] (restricted)

Full references

Cited by:
(explanations, 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.)

Aditi Mehta & Marc Rysman & Tim Simcoe, 2007. "Identifying the Age Profile of Patent Citations," Boston University - Department of Economics - Working Papers Series WP2007-021, Boston University - Department of Economics. [Downloadable!]
Other versions:
- 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.

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