Sonia Kuester Pfaffenroth ’97 named partner at Sullivan & Cromwell in antitrust group
Pfaffenroth studied chemistry and media studies at Carleton.
Sonia Kuester Pfaffenroth ’97 has joined Sullivan & Cromwell LLP as a partner in the firm’s Antitrust Group, resident in its Washington, D.C. office.
Ms. Pfaffenroth brings extensive experience advising clients on complex antitrust matters in the U.S. and globally, including having served as Deputy Assistant Attorney General for Civil and Criminal Operations, and Deputy Assistant Attorney General for Civil Enforcement in the Antitrust Division of the U.S. Department of Justice.
“S&C has long had a premier global antitrust practice. As antitrust enforcement and competition issues continue to shape business decisions around the globe, Sonia’s combination of government experience, technical excellence and strategic insight will enhance our ability to serve our clients’ increasingly complex needs,” said Sullivan & Cromwell Co-Chairs Robert Giuffra and Scott Miller. “We’re delighted to welcome her to S&C and look forward to working with her.”
Ms. Pfaffenroth’s practice encompasses federal and state antitrust litigation and investigations, as well as compliance, training and strategic counseling across a broad range of competition issues, including pricing, marketing, distribution, contracting, trade associations, R&D and other collaborations. She counsels on a broad range of antitrust matters including international cartel investigations, merger and acquisition reviews and civil antitrust litigation.