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Time in Purgatory: Determinants of the Grant Lag for U.S. Patent Applications

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Author Info
David Popp
Ted Juhl
Daniel K.N. Johnson

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Abstract

The impacts of two recent changes in US patent policy depend on the length of time it takes for an invention to go through the examination process. Concerns over the distributional effects of these changes were expressed during policy debates. We use data on U.S. patent applications and grants to determine the factors influencing the length of the patent examination process. We augment this analysis with interviews of patent examiners, leading to a better understanding of the examination process. Our analysis finds that differences across technology are most important. Inventor characteristics have statistically significant effects, but the magnitudes are small.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 9518.

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Date of creation: Mar 2003
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Handle: RePEc:nbr:nberwo:9518

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O3 - Economic Development, Technological Change, and Growth - - Technological Change
O32 - Economic Development, Technological Change, and Growth - - Technological Change - - - Management of Technological Innovation and R&D

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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.:
  1. Koenker, Roger W & Bassett, Gilbert, Jr, 1978. "Regression Quantiles," Econometrica, Econometric Society, vol. 46(1), pages 33-50, January. [Downloadable!] (restricted)
  2. Hall, B. & Jaffe, A. & Trajtenberg, M., 2001. "The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools," Papers 2001-29, Tel Aviv.
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  3. Johnson, Daniel K N & Popp, David, 2003. " Forced Out of the Closet: The Impact of the American Inventors Protection Act on the Timing of Patent Disclosure," RAND Journal of Economics, The RAND Corporation, vol. 34(1), pages 96-112, Spring.
    Other versions:
  4. Roger Koenker & Kevin F. Hallock, 2001. "Quantile Regression," Journal of Economic Perspectives, American Economic Association, vol. 15(4), pages 143-156, Fall. [Downloadable!] (restricted)
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  1. Dietmar Harhoff & Stefan Wagner, 2006. "Modeling the Duration of Patent Examination at the European Patent Office," Discussion Papers 170, SFB/TR 15 Governance and the Efficiency of Economic Systems, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich. [Downloadable!]
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  2. Chellaraj, Gnanaraj & Maskus, Keith E. & Mattoo, Aaditya, 2005. "The contribution of skilled immigration and international graduate students to U.S. innovation," Policy Research Working Paper Series 3588, The World Bank. [Downloadable!]
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