Deferred Patent Examination
Most patent systems allow applicants to defer patent examination by some time. Deferred examination was introduced in the 1960s, first at the Dutch patent office and subsequently in many other countries, as a response to mounting backlogs of unexamined patent applications. Some applicants allow the examination option to lapse and never request examination once they learn about the value of their invention. Examination loads are reduced substantially in these systems, albeit at the cost of having a large number of pending patent applications. Economic models of patent examination and renewal have largely ignored this important feature to date. We construct a model of patent application, examination and renewal in which applicants have control over the timing of examination and study the tradeoffs that applicants face. Using data from the Canadian patent office and a simulated GMM estimator, we obtain estimates for parameter values of the value distributions and of the learning process. We use our estimates to assess the value of Canadian patents as well as applications. We find that a considerable part of the value is realized before a patent is even granted. In addition, we simulate the counterfactual impact of changes in the deferment period. The estimates we obtain for the value of one additional year of deferment are relatively high and may explain why some applicants embark on delay tactics (such as continuations or divisionals) in patent systems without a statutory deferment option.
|Date of creation:||Jun 2013|
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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.:
- Yi Deng, 2003.
"A Dynamic Stochastic Analysis of International Patent Application and Renewal Processes,"
Computing in Economics and Finance 2003
189, Society for Computational Economics.
- Yi Deng, 2004. "A Dynamic Stochastic Ananlysis of International Patent Application and Renewal Processes," Econometric Society 2004 North American Summer Meetings 389, Econometric Society.
- Deng, Yi, 2005. "A Dynamic Stochastic Analysis of International Patent Application and Renewal Processes," Departmental Working Papers 0515, Southern Methodist University, Department of Economics.
- Suzanne Scotchmer, 1999. "On the Optimality of the Patent Renewal System," RAND Journal of Economics, The RAND Corporation, vol. 30(2), pages 181-196, Summer.
- McFadden, Daniel, 1989. "A Method of Simulated Moments for Estimation of Discrete Response Models without Numerical Integration," Econometrica, Econometric Society, vol. 57(5), pages 995-1026, September.
- Daniel McFadden, 1987. "A Method of Simulated Moments for Estimation of Discrete Response Models Without Numerical Integration," Working papers 464, Massachusetts Institute of Technology (MIT), Department of Economics.
- Dietmar Harhoff & Stefan Wagner, 2009. "The Duration of Patent Examination at the European Patent Office," Management Science, INFORMS, vol. 55(12), pages 1969-1984, December.
- Pakes, Ariel S, 1986. "Patents as Options: Some Estimates of the Value of Holding European Patent Stocks," Econometrica, Econometric Society, vol. 54(4), pages 755-784, July.
- Ariel Pakes, 1984. "Patents as Options: Some Estimates of the Value of Holding European Patent Stocks," NBER Working Papers 1340, National Bureau of Economic Research, Inc.
- Francesca Cornelli & Mark Schankerman, 1999. "Patent Renewals and R&D Incentives," RAND Journal of Economics, The RAND Corporation, vol. 30(2), pages 197-213, Summer.
- Pakes, Ariel & Pollard, David, 1989. "Simulation and the Asymptotics of Optimization Estimators," Econometrica, Econometric Society, vol. 57(5), pages 1027-1057, September.
- Marc Baudry & Béatrice Dumont, 2009. "A Bayesian Real Option Approach to Patents and Optimal Renewal Fees," Working Papers hal-00419330, HAL.
- Hall, Bronwyn H & Ziedonis, Rosemarie Ham, 2001. "The Patent Paradox Revisited: An Empirical Study of Patenting in the U.S. Semiconductor Industry, 1979-1995," RAND Journal of Economics, The RAND Corporation, vol. 32(1), pages 101-128, Spring.
- Deng, Yi, 2011. "A dynamic stochastic analysis of international patent application and renewal processes," International Journal of Industrial Organization, Elsevier, vol. 29(6), pages 766-777.
- Ariel Pakes & Mark Schankerman, 1984. "The Rate of Obsolescence of Patents, Research Gestation Lags, and the Private Rate of Return to Research Resources," NBER Chapters,in: R&D, Patents, and Productivity, pages 73-88 National Bureau of Economic Research, Inc. Full references (including those not matched with items on IDEAS)