Department profile
Ashurst Perkins Coie – London, New York, Seattle, Sydney

Antitrust

USA Guide 2026 : Washington

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Ashurst Perkins Coie – London, New York, Seattle, Sydney

Rankings

Chambers Review

Provided by Chambers

Antitrust - Washington

Band 1

What the Team is Known For
Perkins Coie LLP fields an impressive antitrust practice with a wealth of experience navigating high-stakes antitrust litigation including class actions. The team also offers capability in obtaining merger clearance. The firm's clients hail from the technology industry, among others.
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Work Highlights

Provided by Chambers

  • Perkins Coie LLP defended Amazon Web Services, Inc. against Subspace Omega which alleged that the cloud computing platform was in violation of the Sherman Antitrust Act and had monopolized the cloud computing market.

Strengths

Provided by Chambers

  • I don't lose sleep about my case. I know it is being well handled.

    Antitrust respondentUSA

  • The firm does a good job understanding our business and building deep factual knowledge of cases.

    Antitrust respondentUSA

  • Perkins Coie is well suited for complicated matters that require expertise out of the scope of in-house teams.

    Antitrust respondentUSA

Notable Practitioners

Provided by Chambers

  • Shylah Alfonso
    Shylah Alfonso

    Shylah Alfonso

    Chair of the firm's antitrust and unfair competition litigation practice Shylah Alfonso offers expert counsel in antitrust litigation as well as assistance with obtaining M&A clearance.

    • Shylah is exceptionally good across the gamut. She is among the best.

      Antitrust respondentUSA

    • I like that Shylah provides practical advice, simplifies and doesn't use big legal words. She makes it understandable to a lay person. That's great in a complex field like Antitrust.

      Antitrust respondentUSA
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  • Susan Foster
    Susan Foster

    Susan Foster

    Susan Foster frequently undertakes complex antitrust disputes as part of her broad litigation practice.

    • Susan Foster is an extremely hard worker. She cares very deeply about cases and thinks about how to get things right 24/7.

      Antitrust respondentUSA
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Ranked Individuals at Ashurst Perkins Coie – London, New York, Seattle, Sydney (2)

Washington

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