Chambers Review
Provided by Chambers
Chambers Guide to the USA
Antitrust - District of Columbia
Individual Editorial
Sonia Pfaffenroth is commended for her broad antitrust practice. She has notable strength in litigation and merger challenges.
Sonia Pfaffenroth
USA Guide 2025
Band 4 : Antitrust
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USA 2025
Lawyers profile | USA 2025: Antitrust
Sonia Pfaffenroth
Ranked in 1 Practice Areas
Band 4
About
Provided by Sonia Pfaffenroth
USA
Practice Areas
Sonia Kuester Pfaffenroth focuses her practice on helping clients address complex antitrust issues in the U.S. and globally. She rejoined the firm in 2017 from the Antitrust Division of the U.S. Department of Justice (DOJ) where she served most recently as Deputy Assistant Attorney General for Civil and Criminal Operations. In that role, Sonia was responsible for supervising both civil and criminal antitrust enforcement efforts, as well as the Division's work with antitrust and competition law enforcement agencies worldwide.
Strengths
Provided by Chambers
Slide 1 of 3
Her briefing skills are really strong. She is also really great with clients because she is really practical and good at breaking down complex issues.
Sonia is very thoughtful. She is a very good lawyer.
Slide 2 of 3
Sonia is a very good writer.
Sonia has a very sophisticated understanding of government litigation and implications on companies. Her judgment is very valuable.
Slide 3 of 3
Sonia is very thoughtful and intelligent.
Her briefing skills are really strong. She is also really great with clients because she is really practical and good at breaking down complex issues.
Sonia is very thoughtful. She is a very good lawyer.
Sonia is a very good writer.
Sonia has a very sophisticated understanding of government litigation and implications on companies. Her judgment is very valuable.
Sonia is very thoughtful and intelligent.
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