Maggy Sullivan, a nationally recognized trial lawyer, represents multinational clients in complex antitrust litigation and investigations before federal regulators. She ranks among an elite few antitrust trial lawyers who have secured multiple merger litigation victories against the government.
Maggy brings strategic foresight and more than two decades of experience to her work managing litigation in all its forms, including:
She regularly develops compelling theories and strategies and excels at persuading parties across the litigation spectrum to adopt her perspective. Maggy has won two of the most complex, high-profile matters in the history of the US Department of Justice (DOJ): the Illumina/GRAIL merger and the Booz Allen Hamilton/EverWatch merger.
Her established track record demonstrates excellence in handling sprawling, long-running antitrust matters that run the gamut from investigation, to criminal prosecution, to multi-district litigation, or commercial class actions.
Maggy is regularly recognized for her work by leading industry publications, including Chambers USA, Global Competition Review, Legal 500, and Benchmark Litigation.
Maggy's successes include representing:
A Latham litigation team secured dismissal with prejudice of an antitrust class action challenging Novartis’ listing of Entresto-related patents in the FDA’s Orange Book.
Washington, D.C. Office Managing Partner Mandy Reeves celebrates her second win as Dealmaker of the Year and two litigation teams earn top honors.
Many Latham lawyers were individually recognized, and the firm was named a Top 20 US Trial Law Firm and ranked Tier 1 in six practice categories.