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Do remedies affect the efficiency defense? An optimal merger-control analysis

Author

Listed:
  • Jean-Philippe Tropeano

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique, PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École nationale des ponts et chaussées - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

  • Andreea Cosnita

    (EconomiX - EconomiX - UPN - Université Paris Nanterre - CNRS - Centre National de la Recherche Scientifique)

Abstract

This paper examines the optimal use of remedies and the efficiency defense for merger control. We develop a framework in which merger efficiency gains are endogenously determined and are not observed by the Competition Authority. The possibility of an efficiency defense can push firms to design the merger better, leading to greater efficiency gains. Firms can also submit remedies to the Competition Authority: they interact with the efficiency defense, by reducing the firm's incentive to enhance efficiency. At the same time remedies improve the assessment of the merger, in particular by signaling the true level of efficiency gains. We ask to what extent it may be optimal to make use of both instruments simultaneously, and thus discuss the possibility that the Competition Agency refrain from using one of the instruments to try to improve overall merger-control performance.

Suggested Citation

  • Jean-Philippe Tropeano & Andreea Cosnita, 2012. "Do remedies affect the efficiency defense? An optimal merger-control analysis," PSE-Ecole d'économie de Paris (Postprint) hal-00643695, HAL.
    • Handle: RePEc:hal:pseptp:hal-00643695
    DOI: 10.1016/j.ijindorg.2011.05.004
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    Cited by:

    1. Dubus, Antoine & Legros, Patrick, 2022. "The Sale of Data: Learning Synergies Before M&As," CEPR Discussion Papers 17404, C.E.P.R. Discussion Papers.
    2. Boris Begović & Dušan Popović, 2019. "Merger Control and Economic Growth of LDCs: Some Observations and Recommendations," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 54(2), pages 381-408, March.
    3. Lars Sorgard & Andreea Cosnita-Langlais, 2013. "Enforcement vs Deterrence in Merger Control: Can Remedies Lead to Lower Welfare?," Post-Print hal-01668416, HAL.
    4. Cosnita-Langlais Andreea & Sørgard Lars, 2018. "Enforcement and Deterrence in Merger Control: The Case of Merger Remedies," Review of Law & Economics, De Gruyter, vol. 14(3), pages 1-22, November.
    5. Andreea Cosnita-Langlais, 2016. "Enforcement of Merger Control. Theoretical Insights for Its Procedural Design," Revue économique, Presses de Sciences-Po, vol. 67(HS1), pages 39-51.
    6. Shekhar, Shiva & Wey, Christian, 2017. "Uncertain merger synergies, passive partial ownership, and merger control," DICE Discussion Papers 260, Heinrich Heine University Düsseldorf, Düsseldorf Institute for Competition Economics (DICE).
    7. Dertwinkel-Kalt, Markus & Wey, Christian, 2014. "Remedies vs. Extreme Options in Merger Control," VfS Annual Conference 2014 (Hamburg): Evidence-based Economic Policy 100397, Verein für Socialpolitik / German Economic Association.
    8. Christopher Teh & Dyuti Banerjee & Chengsi Wang, 2022. "Acquisition-induced kill zone," Monash Economics Working Papers 2022-24, Monash University, Department of Economics.
    9. Markus Dertwinkel-Kalt & Christian Wey, 2021. "Evidence Production in Merger Control: The Role of Remedies," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 59(1), pages 1-12, August.
    10. Nocke, Volker & Rhodes, Andrew, 2025. "Optimal Merger Remedies," TSE Working Papers 25-1660, Toulouse School of Economics (TSE).

    More about this item

    Keywords

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    JEL classification:

    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices
    • K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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