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Modelling the duration of patent examination at the European Patent Office

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Author Info
Harhoff, Dietmar
Wagner, Stefan

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Abstract

We analyze the duration of patent examination at the European Patent Office (EPO). Our data contain variables that are correlates of the applicants’ and examiners’ assessments of a patent’s economic and technical relevance as well as ex post-application citation measures which indicate the impact of the patent application on the state of the art. We present descriptive statistics for 30 major technology fields. In our multivariate analysis we estimate competing risk specifications in order to characterize differences in the processes leading to either a withdrawal of the application by the applicant, a refusal of the patent grant or an actual patent grant by the European Patent Office. Measuring a patent’s importance relying on the number of citations by subsequent patents we find that more important patents are approved faster by the EPO than less important patents but that applicants are more hesitant to withdraw these potentially valuable applications.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 5283.

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Date of creation: Oct 2005
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Handle: RePEc:cpr:ceprdp:5283

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Related research
Keywords: European Patent Office patent examination patents survival analysis

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Find related papers by JEL classification:
C15 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: General - - - Statistical Simulation Methods
C41 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics - - - Duration Analysis
D73 - Microeconomics - - Analysis of Collective Decision-Making - - - Bureaucracy; Administrative Processes in Public Organizations; Corruption
O34 - Economic Development, Technological Change, and Growth - - Technological Change - - - Intellectual Property Rights

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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.:
  1. P. Regibeau & K. Rockett, 2003. "Are More Important Patents Approved More Slowly and Should They Be?," Economics Discussion Papers 556, University of Essex, Department of Economics. [Downloadable!]
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  2. 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)
  3. David Popp & Ted Juhl & Daniel K.N. Johnson, 2003. "Time in Purgatory: Determinants of the Grant Lag for U.S. Patent Applications," NBER Working Papers 9518, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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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.)

  1. Stefan Wagner, 2004. "Business Method Patents in Europe and their Strategic Use – Evidence from Franking Device Manufacturers," Law and Economics 0410003, EconWPA. [Downloadable!]
    Other versions:
  2. Schneider, Cédric, 2007. "The Outcome of Patent Applications - Does Experience Matter?," MPRA Paper 3359, University Library of Munich, Germany. [Downloadable!]
  3. Harhoff, Dietmar & Hoisl, Karin & Reichl, Bettina & van Pottelsberghe de la Potterie, Bruno, 2007. "Patent Validation at the Country Level - The Role of Fees and Translation costs," Discussion Papers in Business Administration 2073, University of Munich, Munich School of Management. [Downloadable!]
    Other versions:
  4. Régibeau, Pierre & Rockett, Katharine, 2007. "Are More Important Patents Approved More Slowly and Should They Be?," CEPR Discussion Papers 6178, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
    Other versions:
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