Patents, Research Exemption, and the Incentive for Sequential Innovation
"We develop a quality ladder model to study the R&D incentive impacts of intellectual property rights with a "research exemption" or "experimental use" provision. The innovation process is sequential and cumulative and takes place alongside production in an infinite-horizon setting. We solve the model under two distinct intellectual property regimes, characterize the properties of the relevant Markov perfect equilibria, and investigate the profit and welfare effects of the research exemption. We find that firms, ex ante , always prefer full patent protection. The welfare ranking of the two intellectual property regimes, on the other hand, depends on the relative magnitudes of the costs of initial innovation and improvements." Copyright (c) 2008, The Author(s) Journal Compilation (c) 2008 Blackwell Publishing.
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Volume (Year): 17 (2008)
Issue (Month): 2 (06)
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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- James Bessen & Eric Maskin, 2009.
"Sequential innovation, patents, and imitation,"
RAND Journal of Economics,
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- Denicolo, Vincenzo & Zanchettin, Piercarlo, 2002. "How should forward patent protection be provided?," International Journal of Industrial Organization, Elsevier, vol. 20(6), pages 801-827, June.
- Robert M Hunt, 2003.
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- O'DONOGHUE, Ted & SCOTCHMER, Suzanne & THISSE, Jacques-François, . "Patent breadth, patent life, and the pace of technological progress," CORE Discussion Papers RP -1314, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Bessen, James, 2004. "Holdup and licensing of cumulative innovations with private information," Economics Letters, Elsevier, vol. 82(3), pages 321-326, March.
- Suzanne Scotchmer, 1991. "Standing on the Shoulders of Giants: Cumulative Research and the Patent Law," Journal of Economic Perspectives, American Economic Association, vol. 5(1), pages 29-41, Winter.
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