
With expertise acting for both plaintiff and defendant, Simpson Thacher & Bartlett LLP is highly regarded in antitrust litigation, government investigations, and merger clearance matters. The team has a demonstrable capability to resolve cases involving monopolization, price-fixing, and tying claims. Peter Guryan co-chairs the antitrust and trade regulation practice from New York. Co-chair Sara Razi has secured favorable outcomes in complex mergers and high-profile antitrust litigation. Based in Washington, D.C., co-chair John Terzaken plays a pivotal role in handling antitrust, fraud, and white-collar crime matters, as well as related follow-on litigation. Abram Ellis manages a diverse portfolio encompassing complex antitrust litigation and merger clearances for domestic and international corporations. All lawyers are based in Washington DC, unless otherwise noted.
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Accolades
Client satisfaction: Sector knowledge
Lawyers
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head
Peter Guryan; Sara Y. Razi; John Terzaken
Other key lawyers
Abram Ellis
