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Longer Patent Life Representing Higher Value? A Study on China Stock Market and China Patents

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  • Hong-Wen Tsai
  • Hui-Chung Che
  • Bo Bai

Abstract

By setting the market capitalization as the frame of patent value reference, twenty-two quarter’s market capitalization from 2016Q1 to 2021Q2 of China listed companies (A-shares) were collected. All valid patent data of three patent species including the invention grant, the utility model grant and the design grant, were retrieved for calculating the average patent life of each A-share. The variances of the market capitalization via different patent life groups were analyzed via ANOVA. The A-shares having invention grant’s patent lives above the general level usually showed higher market capitalization means than the A-shares having invention grant’s patent lives below the general level. The invention grants with longer patent life might be regarded as the patents of higher value. The utility model grants with longer patent life might not be regarded as the patents of higher value because of poor significance. The design grant’s patent life was a significant indicator for discriminating China A-share’s market capitalization, however, the optimal patent life were close to but not longer than four years. The longer patent life of the design grants was not regarded as higher value.

Suggested Citation

  • Hong-Wen Tsai & Hui-Chung Che & Bo Bai, 2022. "Longer Patent Life Representing Higher Value? A Study on China Stock Market and China Patents," Bulletin of Applied Economics, Risk Market Journals, vol. 9(1), pages 115-136.
    • Handle: RePEc:rmk:rmkbae:v:9:y:2022:i:1:p:115-136
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    References listed on IDEAS

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    1. Liu, Li-jun & Cao, Cong & Song, Min, 2014. "China's agricultural patents: How has their value changed amid recent patent boom?," Technological Forecasting and Social Change, Elsevier, vol. 88(C), pages 106-121.
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    4. Nicolas van Zeebroeck, 2011. "Long Live Patents: the Increasing Life Expectancy of Patent Applications and its Determinants," Review of Economics and Institutions, Università di Perugia, vol. 2(3).
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    Cited by:

    1. Chin-Yi Chen & Ching-Lin Chu & Hui-Chung Che & Hong-Wen Tsai, 2022. "Using Patent Drawings to Differentiate Stock Return Rate of China Listed Companies. A Study on China Patent Species of Utility Model Grant," Advances in Management and Applied Economics, SCIENPRESS Ltd, vol. 12(4), pages 1-1.
    2. Chin-Yi Chen & Ching-Lin Chu & Hui-Chung Che & Hong-Wen Tsai & Bo Bai, 2022. "Using Patent Drawings to Differentiate Stock Return Rate of China Listed Companies. A Study on China Patent Species of Invention Grant," Advances in Management and Applied Economics, SCIENPRESS Ltd, vol. 12(3), pages 1-4.

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    More about this item

    Keywords

    patent; market capitalization; China A-share; patent life; ANOVA.;
    All these keywords.

    JEL classification:

    • C38 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Classification Methdos; Cluster Analysis; Principal Components; Factor Analysis
    • C46 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics - - - Specific Distributions
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates

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