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Optimal patent length and patent breadth in an R&D driven market with evolving consumer preferences: An evolutionary multi-agent based modelling approach

  • Cevikarslan, Salih


    (UNU-MERIT, and SBE, Maastricht University)

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    The aims of this paper are twofold. The first is to analyse the interaction between research and development (R&D) activities of firms and heterogeneous consumer preferences in structuring the evolution of an industry. The second is to explore the effects of patent life and patent breadth on market outcomes. To answer these research questions, an evolutionary, multi-agent based, sector-level cumulative innovation model is designed. The model addresses supply and demand sides of the market simultaneously with the co-evolution of heterogeneous consumer preferences, heterogeneous firm knowledge bases and technology levels at the micro level. In line with the evolutionary modelling tradition, we have a search algorithm-innovation and imitation of products by firms - a selection of algorithm-revealed preferences of the consumers - and a population of objects in which variation is expressed and on which selection operates: namely, firms (Windrum, 2004). Firms compete on quality and price of their products in an oligopolistic market whereas consumers, constrained by their computational limits, act to maximize their utility with their product choices in a boundedly rational way. There is continuous firm entry and exit depending on the competitive performance of the firms.

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    Paper provided by United Nations University - Maastricht Economic and Social Research Institute on Innovation and Technology (MERIT) in its series MERIT Working Papers with number 020.

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    Date of creation: 2013
    Date of revision:
    Handle: RePEc:unm:unumer:2013020
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    1. Dosi, G. & Marengo, L. & Pasquali, C., 2006. "How much should society fuel the greed of innovators?: On the relations between appropriability, opportunities and rates of innovation," Research Policy, Elsevier, vol. 35(8), pages 1110-1121, October.
    2. Raquel Ortega-Argilés & Andries Brandsma, 2009. "EU-US differences in the size of R&D intensive firms," JRC-IPTS Working Papers on Corporate R&D and Innovation 2009-2, Institute of Prospective Technological Studies, Joint Research Centre.
    3. James Bessen & Eric Maskin, 2006. "Sequential Innovation, Patents, and Imitation," Economics Working Papers 0025, Institute for Advanced Study, School of Social Science.
    4. Luigi Marengo & Corrado Pasquali & Marco Valente & Giovanni Dosi, 2012. "Appropriability, patents, and rates of innovation in complex products industries," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 21(8), pages 753-773, November.
    5. Encaoua, David & Guellec, Dominique & Martinez, Catalina, 2006. "Patent systems for encouraging innovation: Lessons from economic analysis," Research Policy, Elsevier, vol. 35(9), pages 1423-1440, November.
    6. Murat Yildizoglu & T. Vallée, 2004. "Social and Technological Efficiency of Patent Systems," Post-Print hal-00161006, HAL.
    7. Teece, David J., 1986. "Profiting from technological innovation: Implications for integration, collaboration, licensing and public policy," Research Policy, Elsevier, vol. 15(6), pages 285-305, December.
    8. Minniti, A. & Parello, C. & Segerstrom, P. S., 2008. "A Schumpeterian Growth Model with Heterogenous Firms," MPRA Paper 13674, University Library of Munich, Germany.
    9. Howard F. Chang, 1995. "Patent Scope, Antitrust Policy, and Cumulative Innovation," RAND Journal of Economics, The RAND Corporation, vol. 26(1), pages 34-57, Spring.
    10. Timothy Dunne & Mark J. Roberts & Larry Samuelson, 1988. "Patterns of Firm Entry and Exit in U.S. Manufacturing Industries," RAND Journal of Economics, The RAND Corporation, vol. 19(4), pages 495-515, Winter.
    11. Thomas Grebel & Andreas Pyka, 2003. "Agent-based modelling - A methodology for the analysis of qualitative development processes," Discussion Paper Series 251, Universitaet Augsburg, Institute for Economics.
    12. Richard Gilbert and Carl Shapiro., 1989. "Optimal Patent Length and Breadth," Economics Working Papers 89-102, University of California at Berkeley.
    13. Marengo, Luigi & Valente, Marco, 2010. "Industry dynamics in complex product spaces: An evolutionary model," Structural Change and Economic Dynamics, Elsevier, vol. 21(1), pages 5-16, March.
    14. Paul Klemperer, 1990. "How Broad Should the Scope of Patent Protection Be?," RAND Journal of Economics, The RAND Corporation, vol. 21(1), pages 113-130, Spring.
    15. 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).
    16. Grossman, G.M. & Helpman, E., 1989. "Quality Ledders In The Theory Of Growth," Papers 148, Princeton, Woodrow Wilson School - Public and International Affairs.
    17. Gene M. Grossman & Elhanan Helpman, 1989. "Quality Ladders and Product Cycles," NBER Working Papers 3201, National Bureau of Economic Research, Inc.
    18. Nancy T. Gallini, 2002. "The Economics of Patents: Lessons from Recent U.S. Patent Reform," Journal of Economic Perspectives, American Economic Association, vol. 16(2), pages 131-154, Spring.
    19. Nancy T. Gallini, 1992. "Patent Policy and Costly Imitation," RAND Journal of Economics, The RAND Corporation, vol. 23(1), pages 52-63, Spring.
    20. repec:hal:journl:halshs-00177614 is not listed on IDEAS
    21. Don E Kash & William Kingston, 2001. "Patents in a world of complex technologies," Science and Public Policy, Oxford University Press, vol. 28(1), pages 11-22, February.
    22. David Encaoua & Dominique Guellec & Catalina Martínez, 2006. "Patent Systems for Encouraging Innovation: Lessons from Economic Analysis," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00177614, HAL.
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