Thomas D.York (Tom)


Dallas + 1.214.969.4523

Tom York has defended clients in antitrust litigation, merger review, and civil and criminal antitrust investigations for more than a decade. He routinely represents clients before the Department of Justice, the Federal Trade Commission, state attorneys general, and international antitrust enforcers. He also regularly counsels clients on a variety of antitrust issues, including internal investigations and antitrust compliance programs.

Tom works across a range of industries, including consumer products, emerging technology, health care, oil and gas, sports, and transportation. Representative clients include American Airlines, Chevron, Cleveland-Cliffs, Conagra Brands, General Electric, Marathon Petroleum, Procter & Gamble, and Texas Instruments.

Tom has been recognized in Chambers USA, The Legal 500, and Best Lawyers in America, among others, for his experience in defending antitrust matters and his dedication to client service. He is the immediate past chair of the Antitrust & Business Litigation Section of the State Bar of Texas and serves in leadership positions in the American Bar Association's Section of Antitrust Law and the Dallas Bar Association. Tom was selected to the Leadership Dallas Class of 2023.

Tom also maintains an active pro bono practice. Recent examples include successfully challenging the constitutionality of life without parole sentences imposed on minors and defending victims of human trafficking. He previously worked for four years in Jones Day's Washington Office.


  • Cleveland-Cliffs and AK Steel obtain complete dismissal of $500 million antitrust claimJones Day clients Cleveland-Cliffs Inc. and AK Steel Corp. obtained the complete dismissal of an antitrust lawsuit filed in federal court in Houston alleging that they conspired with other steel producers to boycott competitor JSW Steel in violation of Section 1 of the Sherman Act and Texas state laws.
  • Bitmain obtains dismissal of all claims in antitrust suit alleging Bitcoin Cash cryptocurrency market manipulationJones Day successfully defended Bitmain Technologies Ltd., Bitmain, Inc., and Bitmain Technologies’ co-founder and former chairperson Jihan Wu against claims that they conspired with other companies and software developers to manipulate the Bitcoin Cash cryptocurrency market.
  • GE sells GE Industrial Solutions to ABB for $2.6 billionJones Day served as antitrust counsel to General Electric Company in the $2.6 billion sale of GE Industrial Solutions to ABB.
  • Jones Day wins resentencing for juvenile sentenced to life without paroleA team from Jones Day Dallas and Jones Day Washington prevailed in challenging the constitutionality of two sentences of life without parole imposed on a minor.
  • HeidelbergCement and Lehigh Hanson acquire Italcementi for $4.1 billionJones Day secured antitrust approval from the U.S. Federal Trade Commission for the $4.1 billion acquisition by HeidelbergCement AG and its U.S. subsidiary Lehigh Hanson, Inc. of Italcementi S.p.A. and its subsidiary Essroc.
  • Air China Limited and Air China Cargo resolve multidistrict, class action litigation related to air cargo shipmentsJones Day clients Air China Limited and Air China Cargo successfully resolved multidistrict, class action litigation brought by customers alleging an international conspiracy to impose fuel surcharges on air cargo shipments.
  • Newell Rubbermaid secures antitrust clearance for $215 million sale of Endicia to Stamps.comJones Day represented Newell Rubbermaid Incorporated in securing antitrust clearance from the U.S. Department of Justice for the $215 million sale of Newell's Endicia subsidiary to
  • CommScope acquires TE Connectivity's network business for $3 billionJones Day acted as worldwide antitrust counsel to CommScope Holding Company, Inc., a global network infrastructure and connectivity provider based in North Carolina, on its $3 billion acquisition of the Telecom, Enterprise and Wireless business of Switzerland-based electronics company TE Connectivity Ltd.
  • ABB divests Meyer Steel Structures business of Thomas & Betts to Trinity Industries for $600 millionJones Day advised ABB Ltd, a leading power and automation technology group, in its sale of the Meyer Steel Structures business of ABB's Thomas & Betts subsidiary to Trinity Industries, Inc. in an all cash transaction for approximately $600 million.
  • ABB completes sale of Thomas & Betts HVAC business to Nortek for $260 millionJones Day advised ABB Ltd. in its all cash sale of Thomas & Betts' heating, ventilation, and air conditioning business to Nortek, Inc. for $260 million.
  • American Airlines merges with US Airways in $11 billion dealJones Day represented American Airlines in the antitrust investigation and federal court challenge to its $11 billion merger with US Airways, which closed after the Department of Justice and State attorneys general agreed to settle their lawsuit that sought to block the deal.
  • Hertz wins antitrust approval for long-fought acquisition of Dollar ThriftyJones Day secured antitrust approval from the U.S. Federal Trade Commission (FTC) for the $2.3 billion acquisition by U.S. car rental company Hertz Global Holdings, Inc. of Dollar Thrifty Automotive Group.
  • Warner Music Group intervenes in Universal's acquisition of EMI's recording business and Sony's acquisition of EMI's publishing businessJones Day served as lead counsel to Warner Music Group as a third-party intervenor in Universal's acquisition of EMI's recording business for €1.4 billion, as well as in the acquisition of EMI's publishing business by a consortium involving the Sony Corporation for total consideration of €1.6 billion.
  • Yale-New Haven Hospital obtains antitrust approval for proposed Saint Raphael's acquisitionJones Day represented Yale-New Haven Hospital ("YNHH") in connection with all antitrust matters related to its acquisition of a competing hospital, the Hospital of Saint Raphael's in New Haven, Connecticut.
  • ABB receives antitrust clearance for $3.9 billion acquisition of Thomas & BettsJones Day represented ABB Ltd. as antitrust counsel in connection with its $3.9 billion acquisition of Thomas & Betts Corporation.
  • SFN Group acquired by Randstad for $770 millionJones Day advised SFN Group, Inc., a leading strategic workforce solutions company, in its acquisition by Randstad Holding nv for $770 million.
  • ABB receives antitrust clearance for $4.2 billion acquisition of Baldor ElectricJones Day obtained antitrust clearance in the U.S. after a Second Request investigation by the Department of Justice on behalf of ABB Ltd. in connection with its $4.2 billion acquisition of Baldor Electric Company.
  • HomeAway prevails in tax dispute with Palm Beach County Tax CollectorJones Day defended HomeAway, Inc. in a Florida state court declaratory judgment action seeking to hold the travel and vacation home rental website liable for tourist development taxes.
    • November 2022
      Jones Day International Antitrust Conference
    • October 2022
      Antitrust Issues in Pricing
    • September 2022
      Antitrust TX: Issues in Pricing & Distribution
    • August 2022
      Antitrust Developments in the Oil & Gas Sector
    • June 2022
      Antitrust Developments Under the Biden Administration
    • March 2022
      State AG Enforcement in Transportation & Energy
    • July 2021
      No Poach, No Solicit, No Good: How to Avoid Criminal Antitrust Liability For Labor-Related Agreements
    • April 2021
      Antitrust Issues in Pricing and Distribution
    • February 2021
      Antitrust Enforcement Under the Biden Administration
    • October 2020
      Antitrust TX: Trends in Antitrust Enforcement
    • February 13, 2019
      SciTech Focus on Blockchain: Antitrust Regulation and Blockchain Technology, presenter, Sponsored by the ABA Section of Science & Technology, Cybersecurity Legal Task Force, Tort Trial and Insurance Practice Section, Section of Antitrust Law, Section of Litigation, and the ABA Center for Professional Development
    • April 2018
      What's the Point of Antitrust? The New Public Policy Debate
    • October 2017
      Antitrust Issues in Mergers and Acquisitions
    • October 2017
      Antitrust for In-House Counsel
    • April 2017
      Antitrust Issues in Distribution
    • April 2017
      Antitrust for In-House Counsel
    • February 2017
      The Nuts and Bolts of Motion Practice
    • July 11, 2016
      Around the World Enforcement Update on Resale Price Maintenance, ABA Section of Antitrust Law
    • May 17, 2016
      Dallas Bar Association’s Antitrust & Trade Regulation Section CLE