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How many patents does it take to signal innovation quality?

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  • Comino, Stefano
  • Graziano, Clara

Abstract

In this paper, we offer a novel explanation to the surge in patenting observed during the last few years. When PTOs (Patent and Trademark Offices) award bad patents, not only do “false innovators” have the incentive to file applications but also, and more interestingly, “true innovators” are forced to patent more intensively in an attempt to signal their type. However, if they are liquidity constrained, true innovators may fail to separate and this fact reduces the incentives to exert effort in R&D. In addition, drawing on the signaling role of patents highlighted by the model, we investigate some of the proposals that have been put forward in order to mitigate the bad patent problem. We provide an intuitive condition under which a tightening of the patentability standards (“raising the bar”) reduces the distortions caused by bad patents. Moreover, we show that introducing a two-tiered patent system is unlikely to improve market outcomes.

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  • Comino, Stefano & Graziano, Clara, 2015. "How many patents does it take to signal innovation quality?," International Journal of Industrial Organization, Elsevier, vol. 43(C), pages 66-79.
    • Handle: RePEc:eee:indorg:v:43:y:2015:i:c:p:66-79
    DOI: 10.1016/j.ijindorg.2015.08.004
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    Cited by:

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    3. Carlo Capuano & Iacopo Grassi & Riccardo Martina, 2020. "Patent protection and threat of litigation in oligopoly," Journal of Economics, Springer, vol. 130(2), pages 109-131, July.
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    5. Stefano Comino & Alberto Galasso & Clara Graziano, 2020. "Market Power and Patent Strategies: Evidence from Renaissance Venice," Journal of Industrial Economics, Wiley Blackwell, vol. 68(2), pages 226-269, June.
    6. Kwon, Seokbeom, 2021. "The prevalence of weak patents in the United States: A new method to identify weak patents and the implications for patent policy," Technology in Society, Elsevier, vol. 64(C).
    7. Huang, Lei & Wang, Chenhao & Chin, Tachia & Huang, Jiahe & Cheng, Xuanmei, 2022. "Technological knowledge coupling and green innovation in manufacturing firms: Moderating roles of mimetic pressure and environmental identity," International Journal of Production Economics, Elsevier, vol. 248(C).
    8. Hewitt-Dundas, Nola & Gkypali, Areti & Roper, Stephen, 2019. "Does learning from prior collaboration help firms to overcome the ‘two-worlds’ paradox in university-business collaboration?," Research Policy, Elsevier, vol. 48(5), pages 1310-1322.
    9. Marco, Alan C. & Sarnoff, Joshua D. & deGrazia, Charles A.W., 2019. "Patent claims and patent scope," Research Policy, Elsevier, vol. 48(9), pages 1-1.
    10. Huang, Xiaoqi & Liu, Wei & Zhang, Zhan & Zou, Xinyu & Li, Pujuan, 2023. "Quantity or quality: Environmental legislation and corporate green innovations," Ecological Economics, Elsevier, vol. 204(PB).

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    More about this item

    Keywords

    Patenting; Bad patents; R&D incentives; Signaling;
    All these keywords.

    JEL classification:

    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • 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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