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Public R&D and green knowledge diffusion:\r\nEvidence from patent citation data

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  • Gianluca ORSATTI

Abstract

The present paper investigates the relationship between public R&D and the diffusion of green knowledge. To do so, we exploit information contained in green patents filed at the European Patent Office from 1980 to 1984. The diffusion of green knowledge is measured by meaning of patent citations. The level of public R&D is instrumented through the policy reaction to the 1986 Chernobyl nuclear accident – that affected the level of public R&D in the energy generation domain – in a difference in differences setting. Results show that a 10% increase in public R&D increases by around 0.7% the number of citations to green patents. Moreover, increasing public R&D fosters the diffusion of green knowledge across traditional (non-green) domains and increases the average technological distance of inventions citing green patents. This evidence suggests that public R&D is a driver of green knowledge diffusion, accelerates the hybridization of traditional innovation processes and fosters technological diversification.

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  • Gianluca ORSATTI, 2019. "Public R&D and green knowledge diffusion:\r\nEvidence from patent citation data," Cahiers du GREThA (2007-2019) 2019-17, Groupe de Recherche en Economie Théorique et Appliquée (GREThA).
  • Handle: RePEc:grt:wpegrt:2019-17
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    1. Gianluca Orsatti & Francesco Quatraro & Alessandra Scandura, 2020. "Regional differences in the generation of green technologies: the role of local recombinant capabilities and academic inventors," Carlo Alberto Notebooks 617, Collegio Carlo Alberto.

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    More about this item

    Keywords

    Public R&D; Green innovation; Knowledge diffusion; Patent citations; Environmental policy; Green R&D;
    All these keywords.

    JEL classification:

    • O30 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - General
    • 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
    • O38 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Government Policy
    • Q55 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Technological Innovation

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