U.S. and European Union Antitrust Agencies Issue Revised “Best Practices” for Coordinating Merger Reviews

October 24, 2011

On October 13, 2011, the Department of Justice, Antitrust Division (“DOJ”), Federal Trade Commission (“FTC”) (together, the “U.S. agencies”) and the Competition Directorate-General of the European Commission (“DG Competition”) issued an updated set of best practices for coordinating merger reviews.


These best practices are intended to facilitate coordination, to the extent consistent with their respective laws and enforcement responsibilities, between the U.S. agencies and DG Competition when they are both reviewing the same merger (when the merger is subject to EU Merger Regulation, but regardless of whether the merger is subject to HSR notification).  In such cases, the agencies have a mutual interest in reaching, insofar as possible, consistent, or at least non-conflicting, outcomes concerning both the timing of review and, if applicable, remedies.



Cooperation between the U.S. agencies and DG Competition is based primarily upon the 1991 U.S.-EU Agreement on the application of their competition laws. The purpose of that Agreement is “to promote cooperation and coordination and lessen the possibility or impact of differences between the Parties in the application of their competition laws.”  Legal constraints in both jurisdictions concerning the sharing of confidential information about parties to a merger or acquisition remain in place, however, and so interagency coordination often depends not only on the agencies themselves but on the cooperation of the merging parties.


The original best practices issued in 2002 provided an advisory framework for interagency cooperation.  The revised best practices (i) provide further guidance to merging parties about coordinating the two review processes in the U.S. and EU, (ii) recognize that mergers may also be subject to antitrust review in other countries, and (iii) emphasize coordination at specific stages of investigations, including the final stage where remedies are considered.


Key Points

The following are the key points contained in the revised set of best practices:

  • At the start of any investigation of a merger subject to review in both the U.S. and EU, the relevant DOJ Section Chief or FTC Assistant Director and DG Competition Unit Head should agree on a tentative timetable for regular consultations, which may include staff economists, taking into account the overall timing of the merger.
  • In particular, the agencies will plan to consult with each other: (a) before the U.S. agency reviewing the merger either closes an investigation without taking action or issues a second request; (b) no later than three weeks after the European Commission (“EC”) initiates a Phase I investigation; (c) before the EC opens a Phase II investigation or clears the merger prior to Phase II; (d) before the EC closes a Phase II investigation without issuing a Statement of Objections or before DG Competition anticipates issuing a Statement of Objections; (e) before the U.S. agency staff makes its case recommendation to senior leadership; (f) at the commencement of remedies negotiations with the merging parties; and (g) prior to a reviewing agency’s final decision to seek to prohibit a merger.
  • Coordination between the U.S. and EU agencies may include sharing publicly available information and, consistent with confidentiality obligations, discussing their respective substantive theories and analyses at various stages of an investigation, and potential remedies.
  • The agencies should hold joint calls or meetings with the merging parties and agency staffs to coordinate timing of their respective investigations.  The parties are encouraged to discuss timing concerns with the reviewing agencies as soon as possible, including providing basic information about the merger in advance of any filings, such as the names and activities of the merging parties, the geographic and product markets in which they operate, the other jurisdictions in which they have made or intend to make a filing and anticipated filing dates, and any other exigencies.
  • The merging parties should suggest timeframes for the submission of documents or other information and interviews, including in DG Competition’s prenotification phase, so as to coordinate review timelines, particularly in the period prior to formal notification in the EU.  Parties should generally aim to make U.S. and EU filings in parallel.
  • The agencies may also coordinate further information and discovery requests and provide opportunities for the parties to make joint presentations or submissions of documents.  Towards that end, the agencies may often seek to obtain confidentiality waivers from the merging parties, normally at DG Competition’s prenotification phase.
  • Where appropriate and consistent with information-sharing constraints, the agencies may share draft remedy proposals and participate in joint discussions with the merging parties, prospective buyers of to-be-divested assets, and divestiture trustees, to ensure compatibility of those remedies.  This process may result in the appointment of common trustees and/or agreement on the same purchaser(s) for assets to be divested in both jurisdictions.

The complete set of best practices can be found here. 


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