Former Federal Antitrust Enforcers Launch Plaintiff-Side Law Firm Simonsen Sussman LLP
Catherine Simonsen Catherine Simonsen

Former Federal Antitrust Enforcers Launch Plaintiff-Side Law Firm Simonsen Sussman LLP

June 17, 2025 (New York, NY) – Today four former senior federal enforcers launched a law firm dedicated to representing plaintiffs in high-impact antitrust and unfair competition litigation combatting the worst abuses of corporate power in our economy. Simonsen Sussman LLP seeks to fill significant gaps in enforcement with a clear mission: to help entrepreneurs, new entrants, small businesses, workers, and other victims of anticompetitive and unfair practices, as well as state and local governments, chart creative, strategic, and cost-effective paths to relief from violations of the competition laws.

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Ex-enforcers launch plaintiffs’ boutique
Catherine Simonsen Catherine Simonsen

Ex-enforcers launch plaintiffs’ boutique

Global Competition Review (17 June 2025) - Three ex-Federal Trade Commission lawyers and a former US prosecutor have opened an antitrust boutique focused on enforcement of “underutilised” laws on behalf of private plaintiffs and state attorneys general.

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