Lisl J. Dunlop
{ Bio Portrait }

Lisl Dunlop has 30 years of experience in antitrust and competition issues, including counseling, litigation, and transactions. Lisl guides clients through the antitrust-related aspects of mergers and acquisitions, joint ventures and other combinations, and sales and distribution matters. She also represents clients in antitrust agency investigations, and has represented major corporations in complex antitrust litigations.

Lisl has significant experience advising leading U.S. and multinational companies in a broad range of industries, including the media, technology, cannabis, and health care sectors. For her health care clients, Lisl provides antitrust and strategic advice in evaluating value-based payment initiatives, the establishment and operation of ACOs and independent physician networks, financial and clinical integration issues, and other transactions and collaborations.

Lisl began her career in Australia, and in addition to the U.S. has also practiced in the UK. Her wide-ranging international experience includes appearing before U.S. federal and state antitrust enforcement agencies, the European Commission, and UK and Australian antitrust authorities. Additionally, she has coordinated the multijurisdictional defense of transactions throughout the world. Lisl’s experience in competition matters in a broad range of jurisdictions brings added value to clients that conduct business internationally and interact with different legal systems and regulators.

Regularly recognized as an antitrust leader, Lisl has been ranked in Chambers USA, Legal 500, Who’s Who Legal, and Global Competition Review and is a frequent author and speaker on issues involving antitrust and competition law.

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Professional Activities

  • New York State Bar Association Antitrust Section – Chair (2016); Executive Committee member
  • American Bar Association, Editorial Board for the 9th Edition of Antitrust Law Developments (2020-22)
  • American Bar Association Section of Antitrust Law – Competition Standards Task Force (2019-21)
  • American Bar Association, Health Law Section
  • American Health Lawyers Association, Antitrust Practice Group—Member
  • Law360 Competition Editorial Advisory Board (2019)


  • Represented Heart of Hospice in its acquisition by LHC Group
  • Represented Tyson Foods in its sale of pet treats business to General Mills
  • Represented Columbia Care in its acquisitions of The Green Solution and Green Leaf Medical
  • Represented Tufts Health Plan in its merger with Harvard Pilgrim Health Care.
  • Represented Textron Inc. in pilot training joint venture with FlightSafety Inc.
  • Represented Peter Adderton and Boost International in opposing the Sprint/T-Mobile merger
  • Authored amicus brief for Nashville Songwriters’ Association International in United States v. Broadcast Music, Inc., Second Circuit, 2017
  • Defended Kaiser Foundation Health Plan and Kaiser Foundation Hospitals in NorthBay Healthcare Group, Inc. v. Kaiser Foundation Health Plan, Inc. in the Northern District of California
  • Represented Mount Sinai in its acquisition of South Nassau Community Hospital
  • Represented in its acquisitions of Endicia and MetaPack
  • Represented Mann+Hummel in its acquisitions of Affinia and Tri-Dim
  • Represented Hetero in the sale of Invagen to Cipla
  • Represented Lutheran Medical Center in its acquisition by NYU/Langone
  • Represented Textron/Cessna in its acquisition of Beechcraft
  • Represented Ardagh Group in its acquisition of Saint Gobain Containers

* Includes matters handled prior to joining Axinn



Thought Leadership



  • LLM – Cornell University Law School (1997)
  • LLB – University of Sydney (1991)
  • BSc – University of Sydney (1991)


  • New York
  • District of Columbia
  • Australia
  • England and Wales
  • US Supreme Court
  • US Court of Appeals for the Second Circuit
  • US District Court Eastern District of New York
  • US District Court Southern District of New York
  • US District Court District of Columbia

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