Stephen Weissman

Section Chair - Antitrust & Competition Law (Firmwide) Partner

Stephen Weissman Photo

Washington, D.C.

P: +1.202.639.1313 F: +1.202.585.1091
  • Lead trial counsel for the FTC in its challenge to the proposed $3.5 billion merger of Sysco and U.S. Foods
  • Responsible for the antitrust review of hundreds of merger and non-merger investigations between 2013 and 2015 at the FTC
  • Counsel for Boehringer Ingelheim in its $12.6 billion asset swap with Sanofi
  • Counsel for Celgene Corporation in its acquisition by Bristol-Myers Squibb (BMS)
  • Counsel for PepsiCo, Inc. in its acquisition of Popcorners and other brands from BFY Foods, Inc.
  • Counsel for Sandoz, Inc. in defense of In re Humira Antitrust Litigation, which alleged unlawful "reverse payment" involving patent settlements
  • Counsel for the Liberty Media portfolio of companies in various transactions involving subsidiaries or affiliates
  • Counsel for Valero LP in its proposed acquisition of various logistics assets
  • Counsel for Novartis in its billion-dollar sale of its generic oral solids and dermatology business to Aurobindo, Inc.
  • Counsel for Celgene Corporation in its acquisition of Juno Therapeutics
  • Counsel for Indorama Ventures Ltd. In its joint-venture acquisition of PET assets from M&G Chemicals and its acquisition of Huntsman's global specialty chemicals business
  • Merck & Co., Inc. in its oncology collaboration with AstraZeneca, and its acquisitions of Peloton Therapeutics and Immune Design Corp.
  • Counsel for Toyoda Gosei in the DOJ's investigation of the auto parts industry
  • Whirlpool Corporation's acquisition of Maytag Corporation - Served as one of the lead lawyers in securing antitrust clearance for one of the highest-profile merger matters within the past ten years; the acquisition combined two of the leading appliance manufacturers in the U.S. without any divestitures required
  • Arch Coal's acquisition of Triton Coal Company, including litigating the case in federal court - Acted as one of the leading lawyers in a merger that combined two of the largest coal mines in the key mining region in the U.S.; the FTC challenged the transaction in federal court; after a month-long evidentiary hearing, the agency was defeated, representing the first FTC loss in a non-hospital merger matter since the early 1990s
  • National Association of Music Merchants in its defense of antitrust claims in In re: Musical Instruments & Equipment Antitrust Litig.
  • South African Airways in defense of claims of price-fixing in In re Air Cargo Antitrust Litigation
  • Anheuser Busch - Anheuser-Busch's $52 billion acquisition by InBev N/V. Including defeating motion for preliminary injunction filed by a group of consumers
  • Schering-Plough's acquisition of Akzo-Nobel's Organon Science's Business; combination of two of the leading worldwide sellers of animal health products
  • Merck & Co., Inc. in various acquisitions and potential acquisitions, in the company's defense of competition law claims in various jurisdictions
  • Boehringer Ingelheim's acquisition of Fort Dodge Animal Health assets from Pfizer-Wyeth
  • Samsung - Represented Samsung in the DOJ's investigation of the DRAM industry; DRAM is the most commonly used semiconductor memory product, providing high-speed storage and retrieval of electronic information for a wide variety of computer, telecommunication and consumer electronic products
  • YRC Worldwide, Inc. - Defended against claims of price fixing under Section 1 of the Sherman Act
  • Nestlé’s $10.3 billion acquisition of Ralston Purina Company - Acquisition by Nestlé one of the largest sellers of pet food in the U.S.
  • Northland Cranberries, Inc. - Represented Northland Cranberries in its Sherman Act case against Ocean Spray Cranberries, Inc.