Key Experience

  • Leads the firm’s antitrust/competition practice and heads its Federal Trade Commission (FTC)-facing consumer protection practice.
  • Concentrates on antitrust and consumer protection litigation and investigations, health care fraud and abuse, and related internal investigations and class actions.
  • Regularly assists clients in effectively navigating the antitrust regulatory approval process in complex transactions and one of only a handful of antitrust lawyers to litigate multiple merger trials against the government.


Corey Roush represents clients in federal antitrust, consumer protection, and qui tam investigations and litigation in district and appellate courts around the country. He has represented clients before the FTC, the Antitrust Division of the U.S. Department of Justice (DOJ) and various attorneys general around the country. He has litigated multiple merger trials against the government, including both the FTC and DOJ. Most recently, he led the trial team in 2018 against the FTC in its challenge to the global merger of two marine chemical providers.

Representative Work

  • Served as lead antitrust counsel to a retailer in its $165 million sale of the pharmacy patient prescription files and related inventory spread from 185 stores in 10 states to the second-largest pharmacy chain; successfully steered the company through FTC regulatory approval despite significant overlaps in some areas by in part negotiating an advantageous deal structure that allowed quick clearance despite those overlaps.
  • Served as lead antitrust counsel to a global maritime company in its $400 million acquisition of its largest competitor in certain marine chemicals and gases, including serving as lead trial counsel in a closely watched, three-week bench trial against the FTC, which sought an injunction blocking the deal (D.D.C.); the proceedings were widely covered in the press, including Law360 articles “Merging Marine Supply Cos. Blast FTC Expert’s Assumptions” and “FTC Wraps Trial Warning Marine Cos. Set for Monopoly” (subscription required).
  • Served as lead antitrust counsel to a large chain in the convenience retailing industry in its $3.3 billion acquisition of approximately 1,030 gasoline and convenience store locations in 18 states, the largest acquisition in our client’s history; following compliance with a Second Request, negotiated a novel FTC divestiture agreement allowing the seller to buy certain overlapping outlets from our client and to retain certain of its own overlapping outlets so long as the seller retained control over pricing of fuel at those outlets..
  • Represented a healthcare system in an antitrust class action alleging conspiracy to fix wages of registered nurses; obtained denial of class certification and denial of motion to intervene; initial intervention decision upheld on appeal..
  • Represented a consumer electronic company facing FTC scrutiny regarding potential consumer protection issues related to a recent update to its privacy policy; the agency closed the investigation without taking action following our advocacy efforts and presentation to staff attorneys.


Public Service and Affiliations