Department profile
Sidley Austin LLP

Appellate Law

USA Guide 2026 : USA - Nationwide

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Sidley Austin LLP

Rankings

About

Provided by Sidley Austin LLP

For more information on the practice, please visit the practice's page at: https://www.sidley.com/en/services/supreme-court-and-appellate

Chambers Review

Provided by Chambers

Appellate Law - USA - Nationwide

Band 2

What the Team is Known For
Sidley Austin has a well-regarded appellate practice, with a skilled and well-supported bench of litigators able to handle cases ranging from complex business cases to high-profile public interest matters. The group demonstrates outstanding credentials appearing before the Supreme Court, alongside significant abilities in state and wider federal appellate work. It counts a number of household names in the financial services, life sciences and industrial sectors among its clients, alongside an active practice representing individuals in civil rights disputes.
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Work Highlights

Provided by Chambers

  • Sidley Austin represents the Kingdom of Spain before the US Supreme Court in proceedings concerning the enforcement of international arbitration awards under the Foreign Sovereign Immunities Act. The case addresses whether US courts may enforce awards arising from intra‑EU energy disputes, following challenges to Spain’s withdrawal of renewable energy incentives and questions surrounding the validity of arbitration under European Union law.

Strengths

Provided by Chambers

  • They are exhaustive with their research, and their ability to argue in front of a panel or judge is fantastic. In all aspects, but particularly litigation, they have top-level quality.

    Appellate Law respondentUSA

  • They are all incredibly cooperative. They never miss an opportunity to multiply strength – it's not just additive, they are really terrific teammates The resources that they have at their disposal are tough to match; they have quite a lot support in a variety of ways, so if issues come up they always have somebody. Their ability to tap into this expertise is so valuable.

    Appellate Law respondentUSA

  • Sidley has a unique vantage point across the appellate spectrum by virtue of the matters they're involved in and their career ties to the appellate bench.

    Appellate Law respondentUSA

  • Their strengths are their deep experience, subject matter expertise, superior judgment, accessibility and excellent work product.

    Appellate Law respondentUSA

Notable Practitioners

Provided by Chambers

  • Tacy Flint
    Tacy Flint

    Tacy Flint

    Tacy Flint is a highly experienced appellate litigator who offers a strong pedigree in high-stakes business appeals and wider commercial disputes. She is based in the firm's Chicago office.

    • She out-strategized her opponent and exploited the case unbelievably in oral argument. That requires a lot of different skills – preparation, creativity, lazer-like analytical skills – plus she's an amazing advocate who knows exactly what to say.

      Appellate Law respondentUSA

    • Tacy is incredibly insightful about how judges will respond to arguments, digs deeper than any other lawyers I have met and has a great sense of what works and what doesn't work.

      Appellate Law respondentUSA

    • She is a gifted litigator and has keen appellate insights that we've come to rely upon.

      Appellate Law respondentUSA
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Ranked Individuals at Sidley Austin LLP (2)

USA - Nationwide

Members

Provided by Sidley Austin LLP

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