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Quinn Emanuel Urquhart & Sullivan, LLP

International Arbitration: Investor-State Arbitration

Global Guide 2026 : UK

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Quinn Emanuel Urquhart & Sullivan, LLP

Rankings

Chambers Review

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International Arbitration: Investor-State Arbitration - UK

Band 1

What the Team is Known For
Quinn Emanuel Urquhart & Sullivan has a highly respected international arbitration practice with expertise in handling disputes arising in the construction, infrastructure, oil and gas, mining and telecommunications sectors. The firm represents clients in arbitrations conducted under the rules of leading institutions, including the ICC, the LCIA and UNCITRAL. It is also highly regarded for investment treaty work, with expertise in numerous BITs and the Energy Charter Treaty. The team often handles disputes arising out of joint ventures and breach of contract claims.
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Work Highlights

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  • Quinn Emanuel advised the Qatar Foundation in a USD2 billion ICC arbitration regarding its termination of construction contracts relating to the Sidra Hospital in Doha, Qatar.

Strengths

Provided by Chambers

  • Quinn Emanuel's team demonstrate formidable performance throughout the litigation process, and all of members exhibit exceptional mastery of the subject matter at issue.

    International Arbitration: Investor-State Arbitration respondentGlobal

  • Quinn Emanuel's efficiency and professionalism make every collaboration smooth and incredibly productive.

    International Arbitration: Investor-State Arbitration respondentGlobal

  • Quinn Emanuel is consistently available, hard-working and dedicated to delivering high-quality advice.

    International Arbitration: Investor-State Arbitration respondentGlobal

  • Quinn Emmanuel is passionate about its work and understands the importance of the personal relations that underpin trust when dealing with high-stakes matters.

    International Arbitration: Investor-State Arbitration respondentGlobal

Notable Practitioners

Provided by Chambers

  • Stephen Jagusch
    Stephen Jagusch

    Stephen Jagusch

    Stephen Jagusch KC is global chair of the firm's international arbitration practice. He is recognised in the market for his handling of complex arbitrations, regularly acting as counsel and arbitrator in high-value energy and construction disputes. He is also highlighted for his handling of significant treaty claims.

    • Stephen is an effective advocate and is very impressive.

      International Arbitration: Investor-State Arbitration respondentGlobal
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  • Anthony Sinclair
    Anthony Sinclair

    Anthony Sinclair

    Anthony Sinclair is at the forefront of investor-state arbitrations, handling numerous BIT claims. He also brings extensive knowledge of international investment law to his practice.

    • He is a strong advocate and a good operator.

      International Arbitration: Investor-State Arbitration respondentGlobal
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  • Epaminontas Triantafilou
    Epaminontas Triantafilou

    Epaminontas Triantafilou

    Epaminontas Triantafilou is a popular choice for investment treaty arbitrations, particularly those arising in the energy sector. He is also vastly experienced in handling LCIA proceedings.

    • He has a cool head and provides outstanding advice.

      International Arbitration: Investor-State Arbitration respondentGlobal

    • Epaminontas brings an impressive level of sophistication to handling complex legal matters, seamlessly combining deep legal expertise with creative problem-solving.

      International Arbitration: Investor-State Arbitration respondentGlobal

    • Epaminontas is an excellent counsel, and I would definitely recommend him for arbitration advice.

      International Arbitration: Investor-State Arbitration respondentGlobal
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  • Dominic Roughton
    Dominic Roughton

    Dominic Roughton

    Dominic Roughton has a diverse arbitration practice, frequently acting in disputes arising in the energy and natural resources sector. He undertakes significant work across Asia and Eastern Europe.

    • Dominic's level of client service is very good.

      International Arbitration: Investor-State Arbitration respondentGlobal
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Ranked Individuals at Quinn Emanuel Urquhart & Sullivan, LLP (4)

UK

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