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Econometric evidence on the depreciation of innovations

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  • de Rassenfosse, Gaétan
  • Jaffe, Adam B.

Abstract

This paper presents estimates of the depreciation rate of innovations using survey data on revenues associated with Australian patents. Its novelty is twofold. First, it relies on direct observation of the revenue streams of inventions. This is in sharp contrast with previous studies, which all rely on models based on indirect observation and require strong identifying assumptions. Second, it presents estimates of the effect of patent protection on the depreciation rate. Results suggest that the depreciation rate is in 2–7% range. Inventions for which a patent is granted are associated with a 1–2 percentage point reduction in the depreciation rate.

Suggested Citation

  • de Rassenfosse, Gaétan & Jaffe, Adam B., 2018. "Econometric evidence on the depreciation of innovations," European Economic Review, Elsevier, vol. 101(C), pages 625-642.
    • Handle: RePEc:eee:eecrev:v:101:y:2018:i:c:p:625-642
    DOI: 10.1016/j.euroecorev.2017.11.005
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    7. Marco Grazzi & Chiara Piccardo & Cecilia Vergari, 2020. "Concordance and complementarity in IP instruments," Industry and Innovation, Taylor & Francis Journals, vol. 27(7), pages 756-788, August.
    8. Ian Goldin & Pantelis Koutroumpis & François Lafond & Julian Winkler, 2024. "Why Is Productivity Slowing Down?," Journal of Economic Literature, American Economic Association, vol. 62(1), pages 196-268, March.
    9. Antonelli, Cristiano & Orsatti, Gianluca & Pialli, Guido, 2023. "Out of Equilibrium and Intangible Assets," Department of Economics and Statistics Cognetti de Martiis. Working Papers 202323, University of Turin.
    10. Cristiano Antonelli & Gianluca Orsatti & Guido Pialli, 2023. "The effects of the limited exhaustibility of knowledge on firm size and the direction of technological change," The Journal of Technology Transfer, Springer, vol. 48(4), pages 1359-1385, August.
    11. Chinloy, Peter & Jiang, Cheng & John, Kose, 2020. "Investment, depreciation and obsolescence of R&D," Journal of Financial Stability, Elsevier, vol. 49(C).
    12. Cristiano Antonelli & Fabrizio Fusillo, 2024. "The limited transferability of knowledge, patent costs and total factor productivity: European evidence," The Journal of Technology Transfer, Springer, vol. 49(5), pages 1719-1736, October.
    13. Gaétan de Rassenfosse & Adam Jaffe & Emilio Raiteri, 2019. "The procurement of innovation by the U.S. government," PLOS ONE, Public Library of Science, vol. 14(8), pages 1-11, August.
    14. Møller, Karl Magnus, 2024. "Domestic renewable energy industries and national decarbonization policy," Energy Policy, Elsevier, vol. 192(C).
    15. Hsu, Po-Hsuan & Taylor, Mark P. & Wang, Zigan & Xu, Qi, 2022. "Currency volatility and global technological innovation," Journal of International Economics, Elsevier, vol. 137(C).
    16. Cristelli, Gabriele & Lissoni, Francesco, 2020. "Free movement of inventors: open-border policy and innovation in Switzerland," MPRA Paper 120099, University Library of Munich, Germany, revised Jan 2024.
    17. Cristiano Antonelli & Christophe Feder, 2023. "The foundations of Schumpeterian dynamics: The European evidence," Journal of Evolutionary Economics, Springer, vol. 33(1), pages 65-96, January.
    18. Cristelli, Gabriele & Lissoni, Francesco, 2020. "Free movement of inventors: open-border policy and innovation in Switzerland," MPRA Paper 104120, University Library of Munich, Germany.
    19. Po-Hsuan Hsu & Hsiao-Hui Lee & Tong Zhou, 2022. "Patent Thickets, Stock Returns, and Conditional CAPM," Management Science, INFORMS, vol. 68(11), pages 8343-8367, November.
    20. Atin Aboutorabi & Ga'etan de Rassenfosse, 2024. "Nowcasting R&D Expenditures: A Machine Learning Approach," Papers 2407.11765, arXiv.org.
    21. Jie Liu & Arnulf Grubler & Tieju Ma & Dieter F. Kogler, 2021. "Identifying the technological knowledge depreciation rate using patent citation data: a case study of the solar photovoltaic industry," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(1), pages 93-115, January.

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    More about this item

    Keywords

    Appropriability; Intangible asset; Obsolescence; Depreciation; Returns to R&D; Weak patent;
    All these keywords.

    JEL classification:

    • M41 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Accounting - - - Accounting
    • O32 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Management of Technological Innovation and R&D
    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes
    • 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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