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Economic Growth and Patent Policy: Quantifying the Effects of Patent Length on R&D and Consumption

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  • Chu, Angus C.

Abstract

Is the patent length an effective policy instrument in stimulating R&D? This paper develops a generalized variety-expanding growth model and then calibrates the model to the aggregate data of the US economy to analyze the effects of extending the patent length. The numerical exercise suggests that at the empirical range of patent-value depreciation rates, extending the patent length beyond 20 years leads to only a very small increase in R&D despite R&D underinvestment in the market economy. On the other hand, shortening the patent length can lead to a significant reduction in R&D and consumption. This paper also makes use of the dynamic general-equilibrium framework to examine the fraction of total factor productivity (TFP) growth that is driven by R&D, and the calibration exercise suggests that about 35% to 45% of the long-run TFP growth in the US is driven by R&D. Finally, this paper identifies and analytically derives a dynamic distortion of the patent length on saving and investment in physical capital that has been neglected by previous studies, which consequently underestimate the distortionary effects of patent protection.

Suggested Citation

  • Chu, Angus C., 2007. "Economic Growth and Patent Policy: Quantifying the Effects of Patent Length on R&D and Consumption," MPRA Paper 5476, University Library of Munich, Germany.
  • Handle: RePEc:pra:mprapa:5476
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    References listed on IDEAS

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    Cited by:

    1. Chu, Angus C. & Leung, Charles K.Y. & Tang, Edward, 2012. "Intellectual property rights, technical progress and the volatility of economic growth," Journal of Macroeconomics, Elsevier, vol. 34(3), pages 749-756.
    2. Furukawa, Yuichi, 2010. "Intellectual property protection and innovation: an inverted-U relationship," Economics Letters, Elsevier, vol. 109(2), pages 99-101, November.
    3. Chu, Angus C. & Cozzi, Guido & Furukawa, Yuichi & Liao, Chih-Hsing, 2017. "Inflation and economic growth in a Schumpeterian model with endogenous entry of heterogeneous firms," European Economic Review, Elsevier, vol. 98(C), pages 392-409.
    4. Lin, Hwan C., 2016. "The switch from patents to state-dependent prizes for technological innovation," Journal of Macroeconomics, Elsevier, vol. 50(C), pages 193-223.
    5. Chu, Angus C., 2011. "The welfare cost of one-size-fits-all patent protection," Journal of Economic Dynamics and Control, Elsevier, vol. 35(6), pages 876-890, June.
    6. Angus C. Chu, 2009. "Macroeconomic Effects of Intellectual Property Rights: A Survey," IEAS Working Paper : academic research 09-A007, Institute of Economics, Academia Sinica, Taipei, Taiwan.
    7. Shiyuan Pan & Heng-fu Zou & Tailong Li, 2010. "Patent Protection, Technological Change and Wage Inequality," CEMA Working Papers 437, China Economics and Management Academy, Central University of Finance and Economics.
    8. Niwa, Sumiko, 2016. "Patent claims and economic growth," Economic Modelling, Elsevier, vol. 54(C), pages 377-381.
    9. Chu, Angus C., 2020. "Patent Policy and Economic Growth: A Survey," MPRA Paper 103643, University Library of Munich, Germany.
    10. Kent R Acheson, 2015. "Is US Patent Policy Strong Enough to Withstand the Winds of Change: A Study of the Need to Change United States Patent Policy," Organic & Medicinal Chemistry International Journal, Juniper Publishers Inc., vol. 1(1), pages 1-11, December.
    11. Sumiko Niwa, 2018. "Effects of a blocking patent on R&D with endogenous survival activities," Journal of Economics, Springer, vol. 125(3), pages 263-277, November.
    12. Neto, António & Furukawa, Yuichi & Ribeiro, Ana Paula, 2017. "Can Trade Unions Increase Social Welfare? An R&D Model with Cash-in-Advance Constraints," MPRA Paper 77312, University Library of Munich, Germany.

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    More about this item

    Keywords

    endogenous growth; intellectual property rights; patent length; R&D;
    All these keywords.

    JEL classification:

    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives

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