Jeremy Calsyn’s practice focuses on the full range of antitrust matters, including merger review, criminal and civil government investigations, and litigation, including complex class actions.

Jeremy has represented clients in their most high-profile and sophisticated matters, including mergers and acquisitions requiring regulatory approval in dozens of jurisdictions, global cartel investigations, and in litigation in federal and state courts. Most recently, he has navigated several automotive parts suppliers through U.S. Department of Justice (DOJ) and worldwide investigations into industry-wide price fixing—described by the DOJ as the largest criminal investigation it has ever undertaken.

Jeremy joined the firm in 1999 and became partner in 2008.

Notable Experience

Merger Clearance Highlights

  • Western Digital in its approximately $17 billion acquisition of SanDisk and in its previous $4.8 billion acquisition of Hitachi Global Storage Technology (HGST), which both required approval in the U.S., EU, China and other jurisdictions.

  • Medtronic in its $49.9 billion acquisition of Covidien, cleared globally less than six months after announcement.

  • Bausch + Lomb in its $500 million acquisition of Ista Pharmaceuticals.

  • Royal DSM in a $2.6 billion joint venture with private equity firm JLL Partners, which involved the spin-off of DSM’s pharmaceutical products group.

  • Vale in its $2.5 billion sale of fertilizer assets and acquisition of a minority interest in Mosaic.

  • Asahi Kasei in its $2.2 billion acquisition of the energy storage business of Polypore International.

  • ArcelorMittal in its $1.55 billion acquisition of ThyssenKrupp Steel USA through a joint venture with Nippon Steel & Sumitomo Metal Corporation.

  • Dollar Thrifty in its $2.3 billion acquisition by Hertz, as well as in the competing bids by Avis.

  • Google in its acquisition of Admeld.

  • Nortel Networks in the $4.5 billion sale of its residual patent assets through a bankruptcy auction to a consortium consisting of Apple, EMC, Ericsson, Microsoft, Research In Motion and Sony.

  • Grupo Bimbo and its U.S. subsidiary, BBU, in its acquisition of Sara Lee’s North American Fresh Bakery.

  • Stanley Black & Decker in the $1.4 billion sale of its Hardware and Home Improvement Group to Spectrum Brands and in its acquisitions of AeroScout and Niscayah.

  • The Dow Chemical Company in its $18 billion acquisition of Rohm & Haas.

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Antitrust Investigations and Litigation

  • Kawasaki Kisen Kaisha and its subsidiary “K” Line America in winning complete dismissal of class actions brought by direct and indirect purchasers of ocean vehicle carrier services. Previously advised “K” Line in antitrust investigations into price fixing in the car shipping industry, including advising in its plea agreement with the DOJ.

  • Aisin Seiki, NSK, Omron and others in  cartel investigations by the DOJ and other antitrust authorities into possible price fixing in the automotive parts industry, as well as in related civil litigation cases.

  • Deutsche Post's DHL Global Forwarding business in defending against a purported class action (now settled) alleging a conspiracy to fix surcharges and fees in the freight forwarding industry. Previously advised DHL in related DOJ investigations, including successful amnesty applications in the U.S. and a number of jurisdictions.

  • Asahi Glass Corporation in ongoing federal class action alleging price fixing of flat glass.

  • A major financial institution in civil litigation concerning global foreign exchange (FX) trading, as well as in related regulatory matters.

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  • Vice Chair, ABA Antitrust Law Section, Cartel and Criminal Practice
  • Former Member, ABA Antitrust Law Section’s International Cartel Task Force


  • Contributed to various publications on developments in antitrust laws, including the Global Competition Review, Competition Law Insight, ABA’s Annual Review of Antitrust Law Developments and the ABA’s Antitrust Law Developments. He was recently interviewed as part of part of the Acritas Stars™ video series on “Forging Stellar Client Relationships.”