Photograph of Olivier N. Antoine

Olivier N. Antoine


Recognized as a
leading antitrust
lawyer in New York
by Chambers USA 2020

Olivier N. Antoine is a partner in Crowell & Moring's Antitrust & Competition Group in the firm's New York office.

Olivier's practice focuses on transactional matters, antitrust regulatory approval, government investigations, and general antitrust counseling, both in the United States and abroad.

Olivier has extensive experience representing corporate clients in difficult merger and antitrust investigations before the Federal Trade Commission, the Department of Justice, the European Commission, SAMR, and many other foreign antitrust agencies. In addition, his practice includes civil and criminal antitrust enforcement matters, private antitrust litigation, and compliance and audit counseling.

Olivier has been ranked by clients and peers in Chambers USA since 2013 as a leading lawyer in Antitrust (New York). Olivier has also been recognized by Global Competition Review's Who's Who Legal of Competition Lawyers in New York since 2010 and by Super Lawyers as a top-rated antitrust litigation attorney since 2020. 

Olivier has significant experience handling strategic antitrust matters before antitrust agencies overseas. He has defended companies in antitrust and merger investigations in more than thirty jurisdictions outside of the United States, including the European Union, Canada, Germany, France, Mexico, Brazil, Chile, Spain, South Africa, Korea, Pakistan, Taiwan, and the People's Republic of China. The breadth of his international experience includes several protracted Phase II investigations before the European Commission, the South African Competition Commission, SAMR, and Brazilian antitrust authority CADE.

Olivier's work has covered a broad range of industries, including satellite radio, recorded music and music publishing, telecommunications, fixed satellites, television broadcasting, oil and gas, paper and forestry products, pharmaceuticals and medical devices, healthcare, food products and food service, bread, spirits, beer, vitamins, textiles, chemicals, fertilizers, sports goods, airlines, automotive and automotive parts, semiconductors, media buying and advertising, brick and mortar and e-distribution, banking, financial services, and private equity.

Representative M&A and Joint Venture Experience

  • AT&T Inc. in many transactions including the $43 billion spin off Warner Media to Discovery, the $7.8 billion sale of an interest in DirecTV to TPG, the $1.175 billion sale of the Crunchyroll business to Sony, the $108.7 billion acquisition of Time Warner Inc., its $67 billion acquisition of DirecTV, its $1.19 billion acquisition of Leap Wireless, its $944 million acquisition of Centennial Communications, and its attempted $39 billion acquisition of T-Mobile USA Inc.
  • Siemens AG in many transactions including the $1.3 billion sale of its Healthcare IT business to Cerner, the sale of its microbiology business to Danaher, and its global collaboration with Varian Medical Systems, and Siemens Healthineers in its $1.1 billion acquisition of Corindus Vascular Robotics. 
  • A third party foodservice divestiture acquirer in connection with U.S. Foods’s $1.8 billion acquisition of Service Group of America, Inc. and several other matters including Sysco’s proposed acquisition of U.S. Foods. 
  • United Technologies in connection with its $30 billion acquisition of Rockwell Collins, and its $15.5 billion acquisition of Goodrich. 
  • TransCanada in its $13 billion acquisition of Columbia Pipeline Group. 
  • Alcoa in its $2.85 billion acquisition of Firth Rixson. 
  • Goldman Sachs & Co. in its spinoff of the REDI business. 
  • Flowers Foods in its $355 million acquisition of the Hostess bread assets. 
  • DuPont in the $4.9 billion sale of DuPont Paint and Coating business to the Carlyle Group. 
  • Veolia in the $1.9 billion sale of its waste assets to Highstar Capital. 
  • Reed Elsevier PLC in its $4.1 billion acquisition of ChoicePoint. 
  • Sirius Satellite Radio in its $13 billion merger with XM Satellite Radio. 
  • Travelport in its $1.4 billion acquisition of Worldspan. 
  • Smithfield Foods in its $810 million acquisition of Premium Standard Foods, and its $367 million acquisition of Farmland Foods.
  • PanAmSat in its $3.2 billion sale to Intelsat. 
  • Adidas AG in its $3.8 billion acquisition of Reebok. 
  • VNU in the attempted $7 billion acquisition of IMS Health. 
  • Celanese before the European Commission in its $492 million acquisition of Acetex. (Phase II investigation) 
  • Grey Global in its $1.7 billion sale to WPP. 
  • CSL in its $925 million acquisition of the Aventis Behring plasma business. 
  • Vivendi Universal in its $8.1 billion sale of the Seagram Spirits and Wine business to Diageo and Pernod Ricard. 
  • Total before the European Commission in its €50 billion acquisition of Elf. (Phase II investigation).

Representative Litigation Experience

  • State of New York et al. v. Deutsche Telekom et al, No 1:19-cv-05434 (S.D.N.Y) – Represented AT&T Inc. as a non-party in connection with the New York Attorney General et al. challenge of T-Mobile USA’s proposed $56 billion acquisition of Sprint.
  • E.I. du Pont de Nemours and Co. v. Kolon Industries, Inc., No. 3.09cv58 (E.D.VA) – Represented E.I. du Pont de Nemours and Company in trade secret infringement litigation against Kolon Industries, Inc., and related monopolization counterclaim (ED Va). DuPont won a $919.9 million verdict, and the antitrust counterclaim was dismissed with prejudice.
  • In re Air Cargo Antitrust Litigation, MDL-1715 (E.D.N.Y.) – Represented a European airline in defending class action claims that air cargo rates were fixed.
  • In re Digital Music Antitrust Litigation, No. 06 MD 1780 (S.D.N.Y) – Represented Warner Music Group in connection with DOJ and NYAG investigations regarding the pricing of digital music and in class action claims filed against music companies alleging collusion in digital music pricing.
  • In re Methyl-Methacrylate Antitrust Litigation, MDL-1768 (E.D. Pa.) – Represented Lucite Inc. in class actions alleging a conspiracy to fix prices of methyl-methacrylate (MMA) and polymethyl-methacrylate (PMMA).
  • In re Publication Paper Antitrust Litigation (MDL No. 1631, D. Conn.) – Represented a major pulp and paper producer in a nationwide antitrust action alleging an unlawful conspiracy to fix the price of publication paper.

Olivier received a Maitrise en droit (J.D.), cum laude, valedictorian, from the University of Paris I, Panthéon-Sorbonne, a Diplome D'Etudes Approfondies (LL.M), cum laude, from the University of Paris I, Panthéon-Sorbonne, and an LL.M, cum laude, from Fordham University School of Law. Before joining Crowell & Moring, Olivier worked at Simpson Thacher & Bartlett LLP in New York, where he was a litigation and antitrust attorney for eight years.

A member of the New York Bar, Olivier is the chair of the International Antitrust and Competition Law Committee of the International Law and Practice (ILP) Section of the New York State Bar Association and also serves as a member of the Steering Group for the International Antitrust Law Committee of the ABA Section of International Law. 


  • University of Paris I Panthéon Sorbonne, Paris, France, J.D., (Maitrise) in International and European Law, cum laude – Valedictorian
  • University of Paris I Panthéon Sorbonne, Paris, France, LL.M., (D.E.A.) in Conflict of Laws and International Business Trade Law, cum laude
  • Fordham University School of Law, LL.M., cum laude


Admitted to practice: New York, various Federal Courts

View More

"Senate Revises Antitrust Bill Aimed at Curbing Self-Preferential Conduct by Online Platforms," Antitrust Law Alert (June 9, 2022). Contacts: Jeane A. Thomas, CIPP/E, Olivier N. Antoine, Richard Stella, Shawn R. Johnson, Jessica Franzetti
Client Alert / Newsletter
Chambers USA 2022 Ranks 70 Crowell & Moring Lawyers and 37 Practice Areas Among Best in U.S. (June 1, 2022)
Firm News / Announcement
"Progressives Stake Out Aggressive Position in New Merger Legislation," Antitrust Law 'In The News' (March 21, 2022). Contacts: Drake Morgan, Shira Liu, Rachel Lesser, Olivier N. Antoine, Alexis J. Gilman, Shawn R. Johnson, Jeane A. Thomas, CIPP/E
Client Alert / Newsletter
"DOJ and FTC Launch Process to Revise Merger Guidelines," Antitrust Law Alert (January 20, 2022). Contacts: Aryeh Mellman, Andrew I. Gavil, Jeane A. Thomas, CIPP/E, Shawn R. Johnson, Alexis J. Gilman, Olivier N. Antoine
Client Alert / Newsletter
"FTC v. Facebook: Court Denies Facebook’s Motion to Dismiss, Allowing Discovery to Proceed in FTC’s Monopolization Case," Antitrust Law Alert (January 18, 2022). Contacts: Shira Liu, Eric Fanchiang, Jeane A. Thomas, CIPP/E, Andrew I. Gavil, Olivier N. Antoine
Client Alert / Newsletter
"Look Beyond The “Company Town”: Labour Monopsony And 21st-Century Merger Enforcement," Global Competition Review (December 17, 2021). Authors: Olivier Antoine, Megan L. Wolf, and Chris Murphy.
Global Competition Review Once Again Recognizes Crowell & Moring’s Antitrust & Competition Group in "GCR 100" (December 16, 2021)
Firm News / Announcement
DEAL NOTE: Crowell & Moring Advises Kymco Capital and Kwang Yang Motor Co. in First Publicly Traded EV Motorcycle Company in U.S., Valued at $1.77 Billion (December 14, 2021)
Firm News / Announcement
"FTC Plans to Impose Prior Approval Requirements for Future Transactions," Antitrust Law Alert (October 27, 2021). Contacts: Shawn R. Johnson, Olivier N. Antoine, Alexis J. Gilman, Connor Ahearn, Kate M. Watkins
Client Alert / Newsletter
"More Changes to Merger Review at the FTC – Parties Should Expect a “More Rigorous” Second Request Process," Antitrust Law Alert (September 29, 2021). Contacts: Alexis J. Gilman, Jeane A. Thomas, CIPP/E, Olivier N. Antoine, Megan L. Wolf, Shawn R. Johnson, Ryan C. Tisch, Richard Stella
Client Alert / Newsletter

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Crowell & Moring LLP is an international law firm with offices in the United States, Europe, MENA, and Asia that represents clients in litigation and arbitration, regulatory and policy, and transactional and corporate matters. The firm is internationally recognized for its representation of Fortune 500 companies in high-stakes litigation and government-facing matters, as well as its ongoing commitment to pro bono service and diversity, equity, and inclusion.

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