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North America - United States • Antitrust

McDermott Will & Emery LLP

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Comfortably acting across a wide spectrum of industries, including telecommunications, agriculture, aerospace, financial services and defense, McDermott Will & Emery LLP is best known for vast experience in the healthcare sector with particular proficiency at the overlap with technology-related matters. Key contacts for such matters are Chicago’s Stephen Wu and Michelle Lowery, who splits her time between Los Angeles and Chicago. Washington DC-based practice head Raymond Jacobsen’s specialisms include the representation of clients in the defense industry, while Ryan Tisch, who joined the firm from Crowell & Moring LLP in May 2023 and is also based in Washington DC, is adept at antitrust-related regulatory reviews across multiple jurisdictions. New York’s Elai Katz joined the team in August 2023 from Cahill Gordon & Reindel LLP, strengthening the team’s expertise in the financial services, retail and pharmaceuticals segments. Andrew Lee departed in June 2023.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘My consistent experience of the firm is that they are excellent across the board.’

  • ‘Expertise and commerciality - the perfect combination.’

  • 'Joel Grossberg has some of the broadest and deepest knowledge of M&A antitrust history of anyone in the DC bar. He blends legal knowledge with commercial realities in a way that is hard for most of his peers to match.'
  • 'High profile, well-regarded team.'
  • 'Ryan Tisch is the best antitrust attorney I have ever worked with. Intelligent, articulate, knows his clients inside and out, a genuinely good person who is a delight to work with. He thinks practically, and business clients love him.'
  • 'It is a great pleasure working with excellent lawyers, in particular Elai Katz, who is an outstanding expert.'
  • 'The team is superb. The breadth of resources is unmatched.'
  • 'Katharine O’Connor is methodical and relentless. She explains clear objectives.'

Key clients

  • Martin Marietta Materials, Inc.
  • Allscripts Healthcare Solutions, Inc.
  • Prime Therapeutics LLC
  • Reproductive Medicine Associates of Philadelphia
  • Constellation Brands
  • Lockheed Martin
  • Premier Inc.
  • Motorola Mobility LLC
  • Treehouse Foods, Inc.
  • Du Pont de Nemours, Inc.
  • CSXT
  • Corteva Inc.
  • Perkin Elmer
  • Southern Illinois Healthcare
  • Voyant Beauty LLC
  • Apple Inc.
  • Poly/HP, Inc.
  • Cedars Sinai Health System
  • Airboss of America
  • Envision Healthcare Corporation and Envision Physician Services
  • Dr.First
  • Airbnb, Inc.
  • CareMetx

Work highlights

  • Represented a former CEO of a healthcare company in a no-poach market allocation case brought by the DOJ Antitrust Division.
  • Represented Motorola Mobility in responding to three third-party subpoenas issued in the government litigations pending against Google, Inc.

Practice head

The lawyer(s) leading their teams.

Raymond Jacobsen

Other key lawyers

Stephen Wu, Michelle Lowery, Elai Katz, Nicole Castle, Stephen Wu, Katharine O’Connor, Joel Grosberg, Ryan Tisch