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Intellectual Property Rights and Crop-Improving R&D under Adaptive Destruction

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  • Yerokhin, Oleg
  • Moschini, GianCarlo

Abstract

This paper studies how the strength of intellectual property rights (IPRs) affects investments in biological innovations when the value of an innovation is stochastically reduced to zero because of the evolution of pest resistance. We frame the problem as a research and development (R&D) investment game in a duopoly model of sequential innovation. We characterize the incentives to invest in R&D under two competing IPR regimes, which differ in their treatment of the follow-on innovations that become necessary because of pest adaptation. Depending on the magnitude of the R&D cost, ex ante firms might prefer an intellectual property regime with or without a "research exemption" provision. The study of the welfare function that also accounts for benefit spillovers to consumers-which is possible analytically under some parametric conditions, and numerically otherwise-shows that the ranking of the two IPR regimes depends critically on the extent of the R&D cost.

Suggested Citation

  • Yerokhin, Oleg & Moschini, GianCarlo, 2007. "Intellectual Property Rights and Crop-Improving R&D under Adaptive Destruction," Hebrew University of Jerusalem Archive 10008, Hebrew University of Jerusalem.
    • Handle: RePEc:ags:hebarc:10008
    DOI: 10.22004/ag.econ.10008
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    References listed on IDEAS

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    1. Terrance Hurley & Silvia Secchi & Bruce Babcock & Richard Hellmich, 2002. "Managing the Risk of European Corn Borer Resistance to Bt Corn," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 22(4), pages 537-558, August.
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