Stuart H. Singer

A partner at Boies Schiller Flexner for over 20 years, Stuart was described by Chambers USA in 2024, as having a “fantastic courtroom presence” and being “among the best trial lawyers in the country.”  Lawdragon called Stuart “a dazzling advocate in trial and appellate courts,” who is relied on “to win big when it matters.” Stuart has done that for numerous Fortune 500 companies, as well as smaller businesses, individuals, and nonprofit organizations. On the plaintiffs’ side, Stuart has served as lead counsel in antitrust and securities representations that have recovered over $1 billion.

Stuart’s experience covers a wide variety of subjects, including antitrust, securities, energy, class action defense, civil fraud, unfair trade practices, professional liability defense, constitutional business law and health care. He has successfully defended the largest utility in the U.S., including in billion-dollar class actions and before the Florida Supreme Court in regulatory and environmental litigation. He also has represented one of the preeminent law firms in the U.S. for over a decade.

Stuart has been recognized by clients and peers as one of the top lawyers in the nation by Chamber & Partners, Best Lawyers in America, and Lawdragon. He has won multiple Most Effective Lawyer awards from the Daily Business Review and has twice been named The American Lawyer’s Litigator of the Week.

Stuart’s appellate work has included matters in virtually every federal appellate court in the country, including the U.S. Supreme Court, and he has successfully argued cases in the second, fifth, ninth, tenth and eleventh federal circuits, as well as the Florida Supreme Court and state appellate courts.  

The firm’s 10-year pro bono case on behalf Florida’s children on Medicaid, which “may have changed more lives than any U.S. litigation of the past decade” (Lawdragon, 2016), was led by Stuart and resulted in improved access to medical and dental care for a class of 2 million children.

Stuart has served on and is past board chair of the National Association for Urban Debate Leagues, which supports debate programs for urban high school students across the United States. Stuart is a member of the American Law Institute, the board of directors for the Holocaust Documentation & Education Center, and the Advisory Board for Beth Israel Deaconess Medical Center. He is the co-author of a treatise on trade secrets litigation, and has taught public interest law on the adjunct faculty at the University of Miami Law School and at Harvard Law School.

Stuart is a Managing Partner and a member of the firm’s Executive Committee.

Stuart’s representative matters include:

• Lead counsel for the nation’s largest producer of renewable energy, for over 15 years, in numerous matters, including successful defense of class actions seeking over $1 billion
• Litigated commerce clause challenge to Texas law that only allows incumbent Texas utilities to construct, own, and operate new interstate transmission lines; argued and won a Fifth Circuit Court of Appeals ruling that the law was facially discriminatory
• Lead counsel for one of the nation’s most prominent law firms in professional liability matters, including winning a broad attorney immunity ruling from the U.S. Court of Appeals for the 5th Circuit, obtaining a directed verdict eliminating a claim for over $800 million in damages after an 8-week jury trial, and winning multiple cases entitling the defendant law firm to recovery of attorneys’ fees
• Successfully argued in the Florida Supreme Court in 2018 and 2019 representing Florida’s largest utility in its base rate case and environmental cost recovery litigation; also won 2020 ruling from state intermediate appellate court establishing that the utility is not responsible for interruption of electricity following a major hurricane, and 2024 ruling requiring purported class plaintiffs to raise issues of hurricane preparedness before the Public Service Commission
• Lead counsel for Fortune 500 insurance and information services company for over 20 years in a variety of litigation and governmental matters, including a successful jury trial in federal court in New Jersey in summer 2023
• Recovered more than $750 million for corporate clients who opted out of class actions alleging price fixing by liquid-crystal-display manufacturers and cathode ray tube manufacturers
• Lead counsel in a pro bono case that, after a 93 day federal trial, resulted in a sweeping favorable decision, leading to a settlement resulting in improved medical and dental care for Florida children on Medicaid; the case, and which, according to one commentator, “may have affected more lives than any litigation of the past decade” (Lawdragon); In 2022, successfully negotiated extension of the settlement to 2030
• Currently defending the nation’s largest cruise line in the first litigations ever brought under the Helms Burton Act regarding travel to Cuba, including a successful dismissal of one such claim, affirmed by the 11th Circuit
• Lead counsel in representing a class of distributors in obtaining significant class wide relief against the nation’s largest multilevel marketing company, which was described as transformative injunctive relief in the industry
• Co-lead counsel for the investor class in the largest of the Bernard Madoff feeder funds and recovered hundreds of millions of dollars; recognized with an AmLaw Litigator of the week award
• Obtained dismissal of litigation brought by Receiver seeking to hold former officers and directors of a public company responsible for deepening insolvency, argued and won affirmance by the 11th Circuit–a result that was recognized by a Most Effective Lawyer award
• Represented a major national sports organization in successfully defending antitrust litigation alleging an unlawful monopoly
• Represented a major agricultural company in successful defense of antitrust litigation concerning pineapple products–argued and won 2nd Circuit appeal affirming summary judgment
• Currently representing international producer of sports trading cards in billion-dollar antitrust, breach of contract, and trade secret disputes in litigation and arbitration
• Obtained dismissal of shareholder derivative action for failure to satisfy demand requirements under Delaware law

Trade Secrets: Law & Practice, with David W Quinto & Eric J Emanuel, LexisNexis (2024 edition)

Co-author, In This Pandemic, Let’s Nix Business as Usual for Regulatory Approvals (April 2020)

Academic Debaters Know an Easy Fix for Presidential Interruptions, Bloomberg Law (2020)

Note, Damage Awards for Constitutional Torts, 93 Harv. L. Rev. 966 (1980)

Case Comment, Good Faith Immunity of Municipalities Under 42 U.S.C. § 1983, 94 Harv. L. Rev. 215 (1980)