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Effects of Patent Length on R&D: A Quantitative DGE Analysis

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Author Info
Chu, Angus C.

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Abstract

This paper develops an R&D-growth model and calibrates the model to aggregate data of the US economy to quantify a structural relationship between patent length, R&D and consumption. Under parameter values that match the empirical flow-profit depreciation rate of patents and other key features of the US economy, extending the patent length beyond 20 years leads to a negligible increase in R&D despite equilibrium R&D underinvestment. In contrast, shortening the patent length leads to a significant reduction in R&D and consumption. Finally, this paper also analytically derives and quantifies a dynamic distortionary effect of patent length on capital investment.

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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 16918.

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Date of creation: Aug 2009
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Handle: RePEc:pra:mprapa:16918

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Related research
Keywords: innovation-driven growth; intellectual property rights; patent length; R&D;

Find related papers by JEL classification:
O34 - Economic Development, Technological Change, and Growth - - Technological Change - - - Intellectual Property Rights
O31 - Economic Development, Technological Change, and Growth - - Technological Change - - - Innovation and Invention: Processes and Incentives

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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. Jones, Charles I, 1995. "R&D-Based Models of Economic Growth," Journal of Political Economy, University of Chicago Press, vol. 103(4), pages 759-84, August. [Downloadable!] (restricted)
  2. Kwan, Yum K. & Lai, Edwin L. -C., 2003. "Intellectual property rights protection and endogenous economic growth," Journal of Economic Dynamics and Control, Elsevier, vol. 27(5), pages 853-873, March. [Downloadable!] (restricted)
  3. Judd, Kenneth L, 1985. "On the Performance of Patents," Econometrica, Econometric Society, vol. 53(3), pages 567-85, May. [Downloadable!] (restricted)
  4. Futagami, Koichi & Iwaisako, Tatsuro, 2007. "Dynamic analysis of patent policy in an endogenous growth model," Journal of Economic Theory, Elsevier, vol. 132(1), pages 306-334, January. [Downloadable!] (restricted)
  5. Charles I. Jones, 1999. "Growth: With or Without Scale Effects?," American Economic Review, American Economic Association, vol. 89(2), pages 139-144, May. [Downloadable!] (restricted)
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  6. Chien-fu Chou & Oz Shy, 1993. "The Crowding-Out Effects of Long Duration of Patents," RAND Journal of Economics, The RAND Corporation, vol. 24(2), pages 304-312, Summer. [Downloadable!] (restricted)
  7. Charles I. Jones & John C. Williams, 1998. "Measuring The Social Return To R&D," The Quarterly Journal of Economics, MIT Press, vol. 113(4), pages 1119-1135, November. [Downloadable!] (restricted)
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  8. Bessen, James, 2008. "The value of U.S. patents by owner and patent characteristics," Research Policy, Elsevier, vol. 37(5), pages 932-945, June. [Downloadable!] (restricted)
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  9. Romer, Paul M, 1990. "Endogenous Technological Change," Journal of Political Economy, University of Chicago Press, vol. 98(5), pages S71-102, October. [Downloadable!] (restricted)
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  10. Rivera-Batiz, Luis A & Romer, Paul M, 1991. "Economic Integration and Endogenous Growth," The Quarterly Journal of Economics, MIT Press, vol. 106(2), pages 531-55, May. [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. Chu, Angus C., 2009. "Macroeconomic Effects of Intellectual Property Rights: A Survey," MPRA Paper 17342, University Library of Munich, Germany. [Downloadable!]
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