Arnold & Porter's Antitrust/Competition practice is recognized worldwide for its breadth, depth, and excellence.

  • More than 120 attorneys in our US and European offices handle complex and critical antitrust/competition matters.
  • Our experience covers the full range of US and EU antitrust issues, such as mergers, pricing, distribution, intellectual property, dominance and abusive conduct, cartel, and state aids (both at the EU and Member State levels).
  • Because our antitrust practice regularly handles the full range of complex antitrust matters (including merger clearances, civil investigations, criminal/cartel investigations, class action antitrust litigation, and counseling/compliance programs), our clients benefit from the multiple perspectives we bring to every engagement.
  • Our deep understanding of the antitrust agencies and our frequent dealings with them give our antitrust attorneys both valuable insight and credibility. Our team includes lawyers who have previously held significant senior government positions in Europe and the US, including the former Assistant Attorney General for Antitrust at the US Department of Justice (DOJ), two Directors of the Bureau of Competition at the Federal Trade Commission (FTC), Deputy Assistant Attorney General for Civil and Criminal Operations of the Antitrust Division, Deputy Director in the Bureau of Competition at the FTC, Chief of the Communications and Finance Section at the Antitrust Division, two Chiefs of Staff at the Antitrust Division, Assistant Director of the FTC's Bureau of Competition, and Head of the Food and Pharmaceuticals and Financial Services Units in the European Commission's Competition Directorate General.
  • We frequently represent companies facing multi-jurisdictional merger, cartel, or abuse of dominance/monopolization investigations. Where appropriate, we involve attorneys from other practice groups for a multidisciplinary approach to client challenges.
  • Our experience spans virtually all industries, including pharmaceuticals, biotechnology, chemicals, energy, electronics, software, consumer goods and services, media, medical devices, and telecommunications.
  • Publications and ranking services repeatedly recognize the quality of our Antitrust practice, including Global Competition Review (we were named one of the publication's "GCR Global Elite" firms in 2017), Chambers, Law360, The Legal 500, US News & World Report / Best Lawyers, and The Vault Guide and LMG Life Sciences 2015 (who named us the Antitrust Litigation Firm of the Year, Antitrust Litigator of the Year, and Impact Case of the Year).


Monsanto Company Sale of the company to Bayer

Obtained US and EU competition clearances in connection with the company’s $66 billion acquisition by Bayer as well as coordinated antitrust/competition approvals in almost 30 other jurisdictions worldwide.

Saudi Basic Industries Corporation (SABIC) Joint venture with Exxon-Mobil

Obtained antitrust clearances associated with the creation of a joint venture with Exxon-Mobil to build and operate an over US $7.0 billion petrochemical plant producing ethylene and ethylene derivatives.  

General Electric Company Acquisition of Alstom

Obtained antitrust clearance for the company’s €12.35 billion acquisition of Alstom.

The Kroger Co. Merger with Harris Teeter

Obtained antitrust clearance for the client’s US$2.5 billion merger with Harris Teeter Supermarkets.

Koito Manufacturing Co. In re Auto Parts Antitrust Litigation

Represents automotive parts manufacturer in indirect purchaser class actions brought on behalf of auto dealers and end-payors alleging price-fixing with regard to automotive lighting products.



Chambers Global
Competition/Antitrust (USA) (2004-2018)
Competition/European Law (Belgium) (2012-2018)
Competition/Antitrust (Global-wide) (2017-2018)
Chambers USA
Antitrust (DC, Nationwide) (2004-2018)
Chambers Europe
Competition/European Law (Belgium) (2011-2018)
Competition/Antitrust (Europe-wide) (2014-2015)


Competition Law in Life Sciences Seminar
Arnold & Porter Antitrust/Competition Seminar, Zürich, Switzerland
Global Overview (pdf)
Getting the Deal Through: Intellectual Property & Antitrust 2019
Antitrust Agency Insights: Developments at the US Antitrust Enforcement Agencies—October 2018
Antitrust/Competition Newsletter
BritNed Developments v. ABB : First UK Cartel Follow-On Judgment Finds No Deliberate Overcharge
Managing Gun-Jumping and Related Antitrust Risks in M&A Transactions: An EU and US Update

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