Adam Proujansky


Adam Proujansky has extensive experience, and a proven track record of obtaining favorable results, in complex and high-stakes litigation, including False Claims Act actions, bid protests, contract disputes, and antitrust cases. Adam has also successfully defended individuals and companies in agency and grand jury investigations, enforcement actions, criminal proceedings, and appeals.

Government Contracts

Adam represents companies in bid protests before the Government Accountability Office (“GAO”) and the U.S. Court of Federal Claims, in cases involving billions of dollars of contract awards. Adam has a track record of obtaining favorable merits decisions and corrective action.

Antitrust Litigation

Adam has significant experience representing corporate clients in complex antitrust disputes involving allegations of price fixing, monopolization, market allocation, tying, and price discrimination. His practice includes the defense of federal and state antitrust claims in individual and class actions alleging billions of dollars in damages.

False Claims Act Litigation

Adam represents companies in actions brought under the False Claims Act by private qui tam plaintiffs, as well as government investigations and enforcement actions. He has handled such cases for clients in a number of industries, including defense, healthcare, and information technology. Adam has obtained dismissals and favorable settlements in actions implicating hundreds of millions of dollars of potential exposure.

In 2017, Adam co-authored the chapter “Threshold Defenses” in The False Claims Act and Government Contracts: The Intersection of Federal Government Contracts, Administrative Law, and Civil Fraud (ABA Book Publishing, 2017).


  • A Fortune 200 healthcare company, in qui tam cases brought against it under federal and state statutes involving millions of dollars of potential exposure. All claims against the client were dismissed. Adam also secured a victory for the client on appeal before the First Circuit.
  • A Canadian radiopharmaceuticals company defendant in a putative federal class action alleging monopolization and attempted monopolization of five radiopharmaceutical product markets.
  • A major aviation contractor, in a bid protest involving a defense contract worth over $100 million.
  • A Fortune Global 500 consulting company, in a False Claims Act lawsuit alleging false statements, kickbacks, and anti-competitive activity. Obtained a favorable settlement of all claims.
  • Represented plaintiffs who opted out of a class action lawsuit brought on behalf of consumers of urethane chemicals alleging that they were the victims of a price-fixing conspiracy among manufacturers. Obtained a $400 million settlement.
  • Obtained appellate affirmance of a damage award worth hundreds of millions of dollars on behalf of an engineering company in an insurance coverage matter. 
  • Obtained dismissal of RICO claim brought against partners in a major law firm.
  • Achieved a favorable, mediated settlement of professional malpractice claim brought against an Am Law 100 law firm.
  • Secured dismissal of criminal charges in cases involving allegations of fraud and public corruption.
  • Represented plaintiffs who brought securities fraud claims against a large, multinational corporation and one of the world’s largest accounting firms. Our client obtained a handsome settlement.
  • Obtained appellate reversal of a federal conviction for insurance fraud.
  • Obtained dismissal of civil RICO claims brought against a banking executive. Adam also secured a victory for the client on appeal before the Eleventh Circuit.

News & Views

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  • 2018–2020, 2022, listed in Capital Pro Bono Honor Roll



  • Supreme Court of the United States
  • United States Court of Appeals for the Eleventh Circuit
  • United States Court of Appeals for the Ninth Circuit
  • District of Columbia
  • New York
  • U.S. District Court - District of Columbia
  • United States Court of Appeals for the District of Columbia Circuit
  • United States Court of Appeals for the Federal Circuit
  • United States Court of Appeals for the Fourth Circuit
  • United States Court of Federal Claims


  • Cornell University, BA
  • Harvard Law School, JD, cum laude