Sean Royall


Sidley Austin

Former Deputy Director of the FTC’s Bureau of Competition; Partner

Sean Royall is a partner at Sidley Austin LLP and serves as a co-leader of the firm’s global Antitrust and Consumer Protection practices. He has spent his entire career handling complex litigation matters and government investigations and is among the country’s most experienced and highly regarded antitrust lawyers. He focuses broadly on antitrust and consumer protection litigation, government investigations, and counseling. He is a highly experienced courtroom litigator with a stellar track record for winning high-stakes cases. Sean is equally effective navigating complex government investigations and advising clients on the details of a wide range of strategic antitrust and consumer protection issues.

Sean previously served at the Federal Trade Commission (FTC) as the Deputy Director of the FTC’s Bureau of Competition. His antitrust career, both in government and private practice, has included work on many major mergers and acquisitions, as well as lead roles in complex litigation matters that often intersect with other areas of law, including patent law, various federal regulatory regimes, consumer protection, and privacy. Sean has deep experience representing clients across a range of industries, including biopharma, healthcare, e-commerce, telecom, financial services, energy, transportation, software, and semiconductors.

Sean also has a nationally prominent reputation for his work in the consumer protection area, where he has particularly deep experience handling FTC investigations and associated litigation focused on advertising, marketing, privacy, and data security issues. For well more than a decade, Sean has been given a Band 1 ranking by Chambers USA (2007 - 2022). He received his J.D. from The University of Chicago Law School, and his Bachelor of Science from Texas A&M University. 


Contributions by Sean Royall