J. Brent Justus Partner

Brent is an antitrust lawyer who advises clients on a range of competition issues, with a particular focus on cartel defense, litigation, and merger clearances. He has litigated matters in federal courts throughout the United States and has handled cases under virtually every aspect of the antitrust laws including monopolization, price fixing, vertical conspiracies, boycotts, and price discrimination, as well as a number of state antitrust and unfair competition statutes. Brent also has successfully represented both corporate clients and individuals located throughout the world in connection with global criminal antitrust cartel investigations. His practice has included representation of clients before the U.S. Department of Justice, Federal Trade Commission, the Canadian Competition Bureau, and the European Commission Directorate General for Competition.

In addition, Brent has worked extensively on merger investigations involving both domestic and European companies and coordinates the preparation of both Hart-Scott-Rodino and international premerger clearance filings.

Brent is regularly featured as a speaker on a diverse range of antitrust-related topics and serves as the co-chair of the Cartel and Criminal Practice Committee of the ABA’s Antitrust Section. He is also an editor of the three-volume State Antitrust Practice and Statutes (Fifth) published by the ABA Antitrust Section, serves on the Board of the Business Law Section of the Virginia State Bar, and is a past chair of the Antitrust Section of the Virginia State Bar.


Served as lead counsel for specialty home products manufacturer in consolidated multi-state class action in which plaintiffs alleged nearly $1 billion in total damages from purported horizontal and vertical antitrust conspiracies.

Representation of industry-leading manufacturer in global cartel investigation involving simultaneous government investigations in Europe, Canada and the United States.

Coordinated the successful merger clearance of two global manufacturers, handling simultaneous investigations by authorities in the United States, Europe, Australia, New Zealand, and South Africa.

Representation of large multinational corporation in the establishment and maintenance of antitrust compliance and audit programs across multiple business units.

Representation of major food company in antitrust litigation brought by competitor asserting both conspiracy and monopolization claims.

Regular representation of both buyers and sellers regarding the antitrust implications of major corporate transactions, including Hart-Scott-Rodino premerger notification and investigations in the United States and the coordination of pre-merger notification filings in other jurisdictions around the world.

Frequent advisor to merger arbitrage funds regarding the timing and likelihood of government antitrust challenges to announced merger transactions.

  • District of Columbia
  • Virginia
  • U.S. Court of Appeals for the 3rd Circuit
  • U.S. Court of Appeals for the 4th Circuit
  • U.S. District Court for the Eastern District of Virginia
  • U.S. District Court for the Western District of Virginia

Fellow, American Bar Foundation

Selected for inclusion in “Legal 500 United States,” Antitrust – Civil Litigation/Class Actions: Defense, 2020, 2021

Selected for inclusion in International Who’s Who of Competition Lawyers, Global Competition Review, 2019, 2020, 2021

Named to "Virginia Rising Stars," Antitrust Litigation, Super Lawyers, Thomson Reuters, 2009, 2011-2015

  • Harvard Law School, JD, magna cum laude, 2000
  • The College of William & Mary, BS, Government and Chemistry, summa cum laude, 1997

Fellow, American Bar Foundation, 2018-present

Vice-Chair, Long Range Planning Committee, Section of Antitrust Law, American Bar Association, 2020-2021

Co-Chair, Cartel & Criminal Practice Committee, Section of Antitrust Law, American Bar Association, 2017-present

President, 2011-2012, Antitrust, Franchise and Trade Regulation Section, Virginia State Bar

President, 2009-2012, Rebuilding Together of Richmond

Member, Antitrust Section, American Bar Association

Member, District of Columbia Bar Association

Member, Federalist Society

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