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Effects of Patent Policy on Income and Consumption Inequality in an R&D-Growth Model

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  • Chu, Angus C.

Abstract

What are the effects of strengthening patent protection on income and consumption inequality? To analyze this question, this paper incorporates heterogeneity in the initial wealth of households into a canonical quality-ladder growth model with endogenous labor supply. In this model, I firstly show that the aggregate economy always jumps immediately to a unique and stable balanced-growth path. Given the balanced-growth behavior of the aggregate economy and an exogenous distribution of initial wealth, I then show that the endogenous distribution of assets in subsequent periods is stationary and equal to its initial distribution. The model predicts that strengthening patent protection increases (a) economic growth by stimulating R&D investment and (b) income inequality by raising the return on assets. However, whether it also increases consumption inequality depends on the elasticity of intertemporal substitution. If and only if this elasticity is less (greater) than unity, strengthening patent protection increases (decreases) consumption inequality. For standard parameter values, strengthening patent protection leads to a larger increase in income inequality than consumption inequality.

Suggested Citation

  • Chu, Angus C., 2008. "Effects of Patent Policy on Income and Consumption Inequality in an R&D-Growth Model," MPRA Paper 10168, University Library of Munich, Germany.
  • Handle: RePEc:pra:mprapa:10168
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    Cited by:

    1. Chu, Angus C. & Peng, Shin-Kun, 2011. "International intellectual property rights: Effects on growth, welfare and income inequality," Journal of Macroeconomics, Elsevier, vol. 33(2), pages 276-287, June.
    2. Lu, You-Xun, 2022. "Interactive effects of monetary policy and patent protection: The role of endogenous innovation size," Economic Modelling, Elsevier, vol. 113(C).
    3. Hu, Ruiyang & Yang, Yibai & Zheng, Zhijie, 2023. "Patent protection and income inequality in a model with two growth engines," Economic Modelling, Elsevier, vol. 123(C).
    4. Posso, Alberto & Zhang, Quanda, 2023. "Social R&D: Does academic freedom contribute to improved societal outcomes?," Information Economics and Policy, Elsevier, vol. 63(C).
    5. Chu, Angus & Liao, Chih-Hsing, 2023. "Optimal Patent Policy and Wealth Inequality in a Schumpeterian Economy," MPRA Paper 117209, University Library of Munich, Germany.
    6. Asteriou, Dimitrios & Dimelis, Sophia & Moudatsou, Argiro, 2014. "Globalization and income inequality: A panel data econometric approach for the EU27 countries," Economic Modelling, Elsevier, vol. 36(C), pages 592-599.
    7. Angus C. Chu, 2022. "Patent policy and economic growth: A survey," Manchester School, University of Manchester, vol. 90(2), pages 237-254, March.
    8. Ken Tabata, 2024. "Taxation of a Non-renewable Resource and Inequality in an R&D-based Growth Model," Discussion Paper Series 272, School of Economics, Kwansei Gakuin University.
    9. Zheng, Zhijie & Wan, Xi & Huang, Chien-Yu, 2023. "Inflation and income inequality in a Schumpeterian economy with heterogeneous wealth and skills," Economic Modelling, Elsevier, vol. 121(C).
    10. Chan, Ying Tung & Yang, Yibai & Zheng, Zhijie, 2022. "Effects of R&D policy on income inequality in a growth model with heterogeneous assets and skills," Economics Letters, Elsevier, vol. 213(C).
    11. 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.
    12. Kais Mtar & Walid Belazreg, 2023. "On the nexus of innovation, trade openness, financial development and economic growth in European countries: New perspective from a GMM panel VAR approach," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 28(1), pages 766-791, January.

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    More about this item

    Keywords

    endogenous growth; heterogeneity; income inequality; patent policy;
    All these keywords.

    JEL classification:

    • D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution
    • O41 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models
    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital

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