Bill Baer is the only individual to lead antitrust enforcement at both US antitrust enforcement agencies, serving as Assistant Attorney General in charge of the Antitrust Division of the US Department of Justice (DOJ) from 2013 to 2016, and as Director of the Bureau of Competition at the Federal Trade Commission (FTC) from 1995 to 1999. He represents a broad range of companies in US and international cartel investigations; antitrust litigation; and mergers and acquisition reviews by antitrust enforcers, including the DOJ, FTC, state attorneys general, and the European Commission.

After heading the Antitrust Division, and immediately prior to rejoining the firm in 2017, Mr. Baer served as Acting Associate Attorney General, the third highest official in the Department of Justice. As Associate Attorney General he oversaw the work of the Antitrust, Civil, Civil Rights, Tax, and Environment and Natural Resources Divisions. His experience in the public and private sectors make him a seasoned and trusted advisor on high-stakes matters, including bet-the-company litigation, mergers and acquisitions, and other government civil and criminal investigations.

During his tenure as Assistant Attorney General, the Antitrust Division achieved unprecedented success in civil and criminal enforcement, bringing and winning more cases than at any point in its history. He also developed close working relationships with his competition enforcer colleagues around the world. As Acting Associate Attorney General, he successfully led the effort to hold financial institutions accountable in the Residential Mortgage Backed Securities crisis, securing record penalties and consumer redress.

Mr. Baer is regarded as one of the world's leading antitrust practitioners. While in private practice, he was twice named by Global Competition Review as the best competition lawyer in the world; honored, in 2010 and 2012, by Best Lawyers as the best antitrust lawyer in Washington; and named by The National Law Journal as one of "The Decade's Most Influential Lawyers."

He received his JD from Stanford Law School, where he served as Senior Articles Editor of The Stanford Law Review, and his BA from Lawrence University.


  • General Electric Company including mergers & acquisitions, litigation, and non-public investigations.
  • Intel in connection with its acquisition of McAfee, and resolution of its litigation with the FTC.
  • Cisco Systems in mergers & acquisitions.
  • Visa in litigation and other matters.
  • Micron Technology Inc. in government investigations, litigation, and standard setting issues.
  • Monsanto in connection with various antitrust matters.
  • Corporate and individual clients in various cartel investigations, including financial services, auto parts, air cargo, and DRAM.


Competition and Compliance Seminar
Arnold & Porter Seminar, Frankfurt
"A New Model for Incentivizing Antitrust Compliance Programs": Changes to DOJ Antitrust Enforcement
Pricing Algorithms: The Antitrust Implications
US Antitrust Year in Review: The Trump Administration's First Year
Arnold & Porter Kaye Scholer Webinar
The Obama Trials: The US antitrust agencies in the courtroom, 2009-2017
Global Competition Review


Best Lawyers
Antitrust Law (2020)
Litigation – Antitrust (2020)
"Washington, DC Lawyer of the Year" – Antitrust Law (2010, 2012-2013)
The Legal 500 US
Antitrust: Cartel (2018-2019)
Antitrust: Merger Control (2018-2019)
Antitrust: Civil Litigation Class Actions (2018)
Chambers USA
Antitrust (DC) (2018-2019)


  • JD, Stanford Law School, 1975
  • BA, Lawrence University, 1972, cum laude
  • District of Columbia
  • Supreme Court of the United States
  • US District Court, District of Columbia
  • US Court of Appeals for the District of Columbia Circuit
Government & Military Service
  • Acting Associate Attorney General, Department of Justice

  • Assistant Attorney General for Antitrust, Department of Justice

  • Director, Bureau of Competition, Federal Trade Commission

  • Assistant General Counsel & Director of Congressional Relations, Federal Trade Commission
  • Attorney Advisor to the Chairman, Federal Trade Commission

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