Lisl J. Dunlop
Partner
Lisl Dunlop brings over 30 years of antitrust experience, helping her clients navigate the complex challenges around mergers, acquisitions, joint ventures, and agency investigations. She focuses on helping clients align their strategic initiatives with antitrust risk, providing practical solutions that move their businesses forward.
Lisl J. Dunlop
Partner
Lisl Dunlop brings over 30 years of antitrust experience, helping her clients navigate the complex challenges around mergers, acquisitions, joint ventures, and agency investigations. She focuses on helping clients align their strategic initiatives with antitrust risk, providing practical solutions that move their businesses forward.
Recognized as a leading antitrust practitioner by international legal rankings, such as Chambers USA, The Legal 500 United States, and Crain’s New York Business, Lisl provides a global perspective to approaching antitrust aspects of transactions, litigation strategy, and government investigations. Drawing from her experience practicing in Australia, the UK, as well as the U.S., she represents clients before U.S. federal and state antitrust agencies as well as international authorities, ensuring they stay compliant while achieving their goals.
Lisl works with clients across industries, including technology, media, and healthcare. Her healthcare practice is particularly robust, advising companies on how to manage antitrust risks in areas like hospital affiliations, joint ventures, accountable care organizations (ACOs), physician networks, and financial and clinical integration issues.
As an accomplished speaker and author, Lisl regularly shares insights on antitrust and competition law. She’s also actively involved in leadership roles within the New York State Bar Association and the American Bar Association’s Antitrust Law sections. Beyond her practice, she's committed to pro bono work, advocating for LGBTQ+ and indigent clients in immigration and asylum matters.
Experience
- Representing the University of Pittsburgh Medical Center (UPMC) in its affiliation with Washington Health System.
- Representing VMware, Inc., in its $69 billion acquisition by Broadcom Inc.
- Represented Tufts Health Plan in its $8 billion merger with Harvard Pilgrim Health Care.
- Represented Heart of Hospice in its acquisition by LHC Group Inc.
- Represented Public.Resource.Org in its complaint to the Federal Trade Commission regarding public access to state laws.
- Represented Tyson Foods Inc. in its $1.2 billion sale of its pet treats business to General Mills.
- Represented Columbia Care in its acquisitions of The Green Solution and Green Leaf Medical.
- Represented Textron Inc. in its pilot training joint venture with FlightSafety Inc.
- Represented entrepreneur Peter Adderton and Boost International in connection with the Sprint/T-Mobile merger.
- Represented Nashville Songwriters Association International in its amicus brief for United States v. Broadcast Music Inc., Second Circuit, 2017.
Honors
- Chambers USA, New York: Antitrust (2010 – 2024)
- The Legal 500 United States, Antitrust: Merger Control (2012 – 2014, 2022 – 2024)
- Crain's New York Business, "Notable Women in Law" (2020)
- Best Lawyers in America, Antitrust Law and Litigation: Antitrust (2020 – 2025)
- Who’s Who Legal, Thought Leaders – Competition (2023 – 2024)
- Who's Who Legal, Competition (2020 – 2024)
- Profiles in Diversity Journal, "Women Worth Watching" (2022)
- Lawdragon, “500 Leading Antitrust & Global Competition Lawyers” (2025)
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Lawdragon, "500 Leading Dealmakers in America" (2024 – 2025)
- Lawdragon, "500 Leading Lawyers in America" (2025)
- Lawdragon, "500 Leading Litigators in America" (2023 – 2025)
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Super Lawyers, New York Metro, "Top Women Attorneys" (2011 – 2022)
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JD Supra, Readers' Choice Awards, "Top Author" (2017 – 2018)
Education
- LLM – Cornell University Law School (1997)
- LLB – University of Sydney (1991)
- BSc – University of Sydney (1991)
Admissions
- England and Wales
- U.S. Supreme Court
- U.S. Court of Appeals for the Second Circuit
- U.S. District Court Eastern District of New York
- U.S. District Court Southern District of New York
- U.S. District Court District of Columbia
Quotes
She has a very nice blend of deep knowledge, experience and practical advice.
Chambers USA
Lisl Dunlop is the consummate professional and that rare blend of extreme professionalism and knowledge coupled with a warm, caring demeanor and true, deep concern for the needs of her clients.
Best Law Firms
Lisl is highly responsive and she can handle any antitrust question that arises.
Chambers USA
Lisl Dunlop wins commendations from peers across North America who consider her a go-to figure in the market for antitrust-related litigation and transactional matters.
Who's Who Legal
News & Insights
News & Insights
Trump’s DOJ Stays the Course in Opposition to Shared Algorithmic Pricing
Byline Articles
Antitrust
Five Healthcare Antitrust Topics to Watch at the Upcoming Health Care Transactions Conference in Nashville
Axinn Viewpoints
Antitrust
ABA 73rd Annual Section of Antitrust Law Spring Meeting
Speaking Engagement
Antitrust
GTCR / Surmodics: Four Key Takeaways for M&A Antitrust from the First FTC Merger Challenge Under Trump
Axinn Viewpoints
Antitrust
American Bar Association 2025 Asia-Pacific Conference
Speaking Engagement
Antitrust
Global Antitrust Shifts: How New U.S. and Australian Policies Will Impact Merger Review and Government Enforcement
Axinn Viewpoints
Antitrust
Companies Wary of New U.S. Rule Scramble to File Mergers by Friday, Lawyers Say
Media Mentions
Antitrust
FTC Tries to Plug Holes in Massive Merger Review Overhaul
Media Mentions
Antitrust
Axinn Attorneys Named to Lawdragon 500 Leading Antitrust & Global Competition Lawyers Guide
Awards & Recognitions
Antitrust
The Fate of the “Last Gasp” of the Biden FTC: Will Its Legacy Survive the Trump Administration?
Axinn Viewpoints
Antitrust
