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Horizontal and Vertial Integration in the Presence of Research Spillovers


  • Stefania Borla


We investigate how different types of merger affect input prices, research levels and equilibrium profits in vertical market structures when there is research activity in the upstream market that spills over to the downstream retailers. To do so, we develop a very simple model where three downstream Cournot oligopolists are served by monopolist plant-specific input suppliers. We consider a situation in which both vertical and horizontal integration are feasible and we investigate which equilibrium structures are likely to emerge following an initial merger between two units.

Suggested Citation

  • Stefania Borla, "undated". "Horizontal and Vertial Integration in the Presence of Research Spillovers," Discussion Papers 04/12, Department of Economics, University of York.
  • Handle: RePEc:yor:yorken:04/12

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    References listed on IDEAS

    1. Ziss, Steffen, 2001. "Horizontal mergers and delegation," International Journal of Industrial Organization, Elsevier, vol. 19(3-4), pages 471-492, March.
    2. Stephen W. Salant & Sheldon Switzer & Robert J. Reynolds, 1983. "Losses From Horizontal Merger: The Effects of an Exogenous Change in Industry Structure on Cournot-Nash Equilibrium," The Quarterly Journal of Economics, Oxford University Press, vol. 98(2), pages 185-199.
    3. Nilssen, Tore & Sorgard, Lars, 1998. "Sequential horizontal mergers," European Economic Review, Elsevier, vol. 42(9), pages 1683-1702, November.
    4. Perry, Martin K & Porter, Robert H, 1985. "Oligopoly and the Incentive for Horizontal Merger," American Economic Review, American Economic Association, vol. 75(1), pages 219-227, March.
    5. Jansen, Jos, 2003. "Coexistence of strategic vertical separation and integration," International Journal of Industrial Organization, Elsevier, vol. 21(5), pages 699-716, May.
    6. Daniel P. O'Brien & Greg Shaffer, 1992. "Vertical Control with Bilateral Contracts," RAND Journal of Economics, The RAND Corporation, vol. 23(3), pages 299-308, Autumn.
    7. Abiru, Masahiro & Nahata, Babu & Raychaudhuri, Subhashis & Waterson, Michael, 1998. "Equilibrium structures in vertical oligopoly," Journal of Economic Behavior & Organization, Elsevier, vol. 37(4), pages 463-480, December.
    8. Greenhut, M L & Ohta, H, 1976. "Related Market Conditions and Interindustrial Mergers," American Economic Review, American Economic Association, vol. 66(3), pages 267-277, June.
    9. Lommerud, Kjell Erik & Straume, Odd Rune & Sorgard, Lars, 2005. "Downstream merger with upstream market power," European Economic Review, Elsevier, vol. 49(3), pages 717-743, April.
    10. Henrick Horn & Asher Wolinsky, 1988. "Bilateral Monopolies and Incentives for Merger," RAND Journal of Economics, The RAND Corporation, vol. 19(3), pages 408-419, Autumn.
    11. Esther Gal-Or, 1990. "Excessive Retailing at the Bertrand Equilibria," Canadian Journal of Economics, Canadian Economics Association, vol. 23(2), pages 294-304, May.
    12. Greenhut, M L & Ohta, H, 1979. "Vertical Integration of Successive Oligopolists," American Economic Review, American Economic Association, vol. 69(1), pages 137-141, March.
    13. Hart, O. & Tirole, J., 1990. "Vertical Integration And Market Foreclosure," Working papers 548, Massachusetts Institute of Technology (MIT), Department of Economics.
    14. McAfee, R Preston & Schwartz, Marius, 1994. "Opportunism in Multilateral Vertical Contracting: Nondiscrimination, Exclusivity, and Uniformity," American Economic Review, American Economic Association, vol. 84(1), pages 210-230, March.
    15. Paul Dobson & Michael Waterson, 1999. "Retailer power: recent developments and policy implications," Economic Policy, CEPR;CES;MSH, vol. 14(28), pages 133-164, April.
    16. Raymond Deneckere & Carl Davidson, 1985. "Incentives to Form Coalitions with Bertrand Competition," RAND Journal of Economics, The RAND Corporation, vol. 16(4), pages 473-486, Winter.
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    More about this item


    integration; researh spillovers; sequential mergers;

    JEL classification:

    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L22 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Organization and Market Structure
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices

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