2001 Ross Avenue, Suite 2100, Dallas, TX 75201 USA
M. Sean Royall in the Firm’s Dallas office is a Gibson Dunn partner focusing on antitrust and consumer protection law and has co-chaired the Firm’s Antitrust and Competition Practice Group for the past fifteen-plus years.
BTI Consulting named Mr. Royall to its 2017 BTI Client Service All-Stars List, recognizing lawyers “who truly stand out as delivering the absolute best client service.” Law360 named Mr. Royall as one of eight lawyers nationwide on its 2015 list of MVPs in Antitrust. National Law Journal also named Mr. Royall among its 2015 Mergers & Acquisitions and Antitrust Trailblazers for his involvement in many notable mergers and antitrust litigations over the past two-plus decades.
Consistently renowned as a leader in antitrust, Mr. Royall has been honored by Chambers USA: America’s Leading Business Lawyers as a Tier 1 antitrust lawyer for over a decade, and has also been named by The Best Lawyers in America as an Antitrust “Lawyer of the Year” on multiple occasions, in addition to recognition as a Life Science Star by LMG Life Sciences and a Litigation Star by Benchmark Litigation Guide.
Mr. Royall served as Deputy Director of the Bureau of Competition at the Federal Trade Commission in Washington, DC from 2001 through 2003 and played a key role in shaping and overseeing the agency’s antitrust enforcement agenda, both in the merger and non-merger areas. While at the FTC, Mr. Royall acted as lead trial counsel in the agency’s groundbreaking suit against computer chip designer Rambus Inc., a case involving patent-related monopolization claims and allegations of deception in the standard-setting context. He also served as the lead lawyer in the FTC’s review of many high-profile mergers and acquisitions, including Pepsi/Quaker Oats, Pillsbury/General Mills, Monster/HotJobs.com, and Chevron/Texaco.
Mr. Royall has spent his entire legal career – both in and outside government – litigating complex antitrust, consumer protection, intellectual property, and other commercial disputes involving a diverse range of industries, including pharmaceuticals, healthcare, computers and computer software, semiconductors, oil and gas, petrochemicals, entertainment and ticketing, gaming equipment, pet foods, food and beverages, defense, airlines, financial services, telecommunications, and avionics.
Most recently, Mr. Royall was on the trial team that successfully defended AT&T’s $85 billion acquisition of Time Warner Inc. against a high-profile challenge by the Trump Administration Department of Justice. He previously represented AT&T in another DOJ antitrust suit alleging unlawful information sharing involving local television programming of Los Angeles Dodgers games, a case successfully resolved by settlement. And he worked on behalf of AT&T on the company’s successful $49 billion acquisition of AT&T.
Much of Mr. Royall’s antitrust litigation work has involved defending brand name drug manufacturers against monopolization suits brought by competing drug companies and putative consumer classes. Currently, he is the lead lawyer for Allergan in a multidistrict antitrust class action suit involving the prescription eye medication Restasis®. He is also currently representing Allergan in a monopolization suit brought by a competitor, Shire PLC, relating to the same drug. Previously, Mr. Royall led Allergan’s defense against competitor and class action antitrust claims involving another eye drug, Zymar®/Zymaxid®, cases that were successfully concluded by settlement. Mr. Royall previously argued for and obtained full dismissal in two separate monopolization cases brought against Sanofi-Aventis and Johnson & Johnson.
In addition to his litigation practice, Mr. Royall regularly represents clients before the Federal Trade Commission and Department of Justice in antitrust and consumer protection matters; counsels firms on mergers and acquisitions, joint ventures, distribution arrangements, and intellectual property licenses; consults on advertising, consumer protection, and privacy/data security issues; and assists large corporations with various legal compliance matters.
As counsel for Facebook, Mr. Royall was the lead signatory on the 2011 FTC consent order resolving a long-running privacy investigation by the agency. Currently, Mr. Royall is representing LendingClub in a consumer protection lawsuit brought by the FTC.
Mr. Royall received his law degree from University of Chicago Law School, where he graduated cum laude in 1990. He served as the Managing Editor of Law Review and was named a Tony Patiño Fellow, a merit-based award to law students who demonstrate leadership, a commitment to public service, and outstanding academic and personal achievement. He holds a B.S. in Economics from Texas A&M University, where he graduated magna cum laude in 1986. He received the Texas A&M Alfred Chalk Award for being the top economics graduate and was elected Student Body President.
Mr. Royall served as a judicial clerk to The Honorable Patrick E. Higginbotham of the U.S. Court of Appeals for the Fifth Circuit in Dallas, Texas, in 1990-91. He also served as the Special Assistant for State Projects to United States Senator Phil Gramm in Washington, D.C. in 1986-87.
Other representative clients for Mr. Royall include 3M Company, Myspace, eBay, Frito-Lay, Sony, Dell, PepsiCo, American Airlines, Sempra Energy, Weight Watchers, and Tenet Healthcare.
University of Chicago - 1990 Juris Doctor
Texas A&M University - 1986 Bachelor of Science