Department profile
Antitrust
USA Guide 2026 : New York
Rankings
Ranked Individuals
Ranked Individuals
Chambers Review
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Work Highlights
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Paul, Weiss, Rifkind, Wharton & Garrison represented IBM in its $6.4 billion acquisition of HashiCorp, a multi-cloud infrastructure automation company.
Strengths
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Paul Weiss give excellent practical advice. They have smart lawyers who give great service.
Antitrust respondentUSAPaul Weiss have the combination of technical expertise and pragmatic, problem-solving approach and efficiency.
Antitrust respondentUSAPaul Weiss do a good job at breaking the law down, speaking in plain English and explaining the key points.
Antitrust respondentUSA
Notable Practitioners
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Eminent Practitioners 
Eminent Practitioners Katherine B Forrest
Former District Court judge Katherine Forrest is a renowned antitrust attorney who has market-leading expertise in litigation. In addition to her role as a judge, her clients benefit from her long career in the DOJ and two prior decades of private practice as a litigator. Katherine has a fantastic intellect. She's savvy, industrious and entrepreneurial.
Antitrust respondentUSA
Band 2 
Band 2 Aidan Synnott
Aidan Synnott is held in particularly high esteem for his expertise in antitrust litigation, drawing from a wealth of expertise in trial matters. He also advises clients on merger clearance and investigations. Aidan is exceptionally capable, effective and efficient. A lawyer's lawyer who is the first call for anything important, complex and sensitive.
Antitrust respondentUSAAidan delivers tailored, practical advice.
Antitrust respondentUSA
Band 4 
Band 4 William Michael
William Michael is a litigator with notable expertise in antitrust individual and class actions. He regularly appears before the competition agencies in significant investigations. He is an absolute star and one of the up-and-coming trial lawyers. He is enormously skilled and can do it all. He is really good at technical things and can do complex antitrust trials.
Antitrust respondentUSAA very disciplined and a strong advocate.
Antitrust respondentUSAHe has a great ability to explain complex antitrust topics in a way that is persuasive to audiences.
Antitrust respondentUSA
Band 5 
Band 5 Eyitayo St. Matthew-Daniel
Eyitayo St. Matthew-Daniel is well-regarded for her handling of DOJ investigations on behalf of clients in technology and consumer goods industries. Clients benefit from her previous experience in the DOJ antitrust division.
Tee is incredibly gifted and understands the criminal side of work.
Antitrust respondentUSAShe is extraordinarily competent, practical and has on her feet experience at trial.
Antitrust respondentUSAShe is really good, smart and energetic.
Antitrust respondentUSA
Band 5 
Band 5 Peter McCormack
Peter McCormack is routinely called upon to represent clients in a broad range of antitrust work, covering litigation, transactions and antitrust counselling. He is particularly adept at providing antitrust advice to private equity firms.
Peter is super commercial. He issue-spots in an M&A context and gives a gut check of how big an issue something might be.
Antitrust respondentUSA
Ranked Individuals at Paul, Weiss, Rifkind, Wharton & Garrison LLP (5)
New York
Katherine B Forrest
Antitrust
View profile Aidan Synnott
Antitrust
View profile William Michael
Antitrust
View profile Eyitayo St. Matthew-Daniel
Antitrust
View profile Peter McCormack
Antitrust
View profile
Paul, Weiss, Rifkind, Wharton & Garrison LLP has rankings in the following guides
Band 2 Band 3
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