Luna Ngan Barrington

Biography

Luna Ngan
Luna Barrington is a partner in Weil’s Complex Commercial Litigation practice, where she represents clients in high-stakes, bet the company litigations across the country. Her practice encompasses antitrust, commercial, product liability, and securities disputes, including class actions and multi-district litigations, as well as bankruptcy litigation and related restructuring and liability management counseling.

Luna is widely recognized for her work. In 2024, Chambers USA ranked her as a leading lawyer in New York General Commercial Litigation. In 2023 and 2024, Benchmark Litigation named her a “Future Star” and included her on its “40 & Under List.” Lawdragon 500 has included her on its 2024 and 2025 lists of “Leading Litigators in America”. In 2021, Law360 selected her as one of five national “Rising Star” for trials, and in 2020, Euromoney’ Legal Media Group’s Americas Women in Business Law Awards shortlisted her as for a “Rising Star in Litigation.”

Notable experience includes:

Antitrust

  • Obtaining the dismissal of three antitrust and RICO disputes for United Therapeutics Corporation in Maryland and Florida federal courts, seeking hundreds of millions of dollars in potential damages concerning Medicare healthcare reimbursement programs.
  • Successfully represented Visa International in a competitor antitrust lawsuit in Texas federal court regarding Visa’s fees and routing agreements.
  • Obtaining a sweeping defense jury verdict, affirmed in the Eight Circuit, in one of the few antitrust class actions tried to verdict in the past decade – with nearly a billion dollars in damages at stake – on behalf of C&S Wholesale Grocers in Minnesota federal court.
  • Winning an Eleventh Circuit victory for Farmers Insurance in an industrywide antitrust MDL regarding insurance carriers’ reimbursement of auto body shops for repair work.
  • Representing ArcelorMittal USA as plaintiff trial counsel in a high-profile antitrust multi-district litigation in D.C. federal court involving claims against two of the nation’s four major Class I railroads.
  • Representing The Kroger Company in merger-related antitrust litigations in Oregon federal court and Washington and Colorado state courts, seeking to enjoin Kroger’s proposed merger with Albertsons.
  • Representing GrubHub in an antitrust class action, alleging that GrubHub, and other defendants, used its dominant market positions to force restaurants to charge higher prices to their customers.

Complex Commercial and Other Litigation

  • Winning a decisive victory for Serta Simmons Bedding after a five-day bench trial that paved the way for Serta to successfully emerge from bankruptcy.
  • Securing a complete arbitration trial victory, following a five-day evidentiary hearing and three rounds of pre- and post-trial briefing, for a major e-commerce company in a nine-figure contract dispute relating to a multi-year operating agreement with a former business partner.
  • Winning a complete defense jury verdict for Johnson & Johnson, following a four-week jury trial in New Jersey state court in the J&J Baby Powder mass tort litigations, a victory that stemmed the tide of hundred-million-dollar plaintiff verdicts in the talc mass tort litigations.
  • Successfully defending international chemicals and energy company Sasol Limited in a $200 million securities class action alleging that the company made false or misleading statements.
  • Providing litigation counseling to Core Scientific, Inc. that paved the way for the company to emerge from chapter 11 restructuring.
  • Representing Nexa Equity, Leap LLC, JobProgress, and Double D Construction as trial counsel in a trade secrets case in federal court in Illinois.

Luna also has an active and rewarding pro bono practice protecting the civil rights of others. In March 2023, she secured a landmark victory before the North Dakota Supreme Court, which affirmed a preliminary injunction ruling that enjoined the implementation of a statute that sought to ban abortions across the state. In 2017, Luna secured a landmark decision before an Arizona federal court after successfully challenging the enactment and enforcement of an Arizona state statute as discriminatory under the First and Fourteenth Amendments of the Constitution. She also secured a complete victory for a pro bono client after a weeklong bench trial in a Hague Convention proceeding.

Luna is active in Firm and other professional organizations and focuses her time on mentoring, diversity, and development. Currently, she serves as a co-leader of AsianAttorneys@Weil, Weil’s global affinity group dedicated to the recruitment, retention, and professional development of Asian attorneys. Luna also is an active member of the Asian American Bar Association in New York (AABANY). In 2020, Law360 selected her to its Trials Editorial Advisory Board.

Prior to joining the Firm, Luna served as a law clerk to the Honorable Richard M. Berman, United States District Court for the Southern District of New York. Luna received her J.D. from the University of California, Hastings College of the Law, where she was a member of the Hastings Business Law Journal. Luna received her undergraduate degree from the University of California, Santa Cruz.

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