Quinn Emanuel Urquhart & Sullivan, LLP

Public International Law Department

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What the team is known for Highly regarded firm with standout expertise in investment treaty and Energy Charter Treaty arbitrations. Remains a popular choice of counsel for sovereign states and investors alike, typically in high-value ICSID and UNCITRAL disputes relating to the mining, energy, construction and telecoms sectors. Fields a highly experienced bench of advocates active across all major arbitration hubs, including London, Paris and Hong Kong.

Strengths Market observers commend the firm for its impressive team, which they say consists of "very good PIL lawyers," and add: "They are a first-class bunch."

Work highlights Defended the Republic of Tunisia before ICSID, in a claim brought by a foreign investor in regard to the expropriation of its interest in a Tunisian bank.

Notable practitioners

London-based Anthony Sinclair maintains a solid reputation in the field and is regularly mandated by both state and commercial entities to act in large-scale investment treaty arbitrations. He is particularly knowledgeable on ECT-related disputes and offers further expertise in the infrastructure, telecoms and mining sectors.

London-based Stephen Jagusch QC is global chair of the firm's international arbitration practice. He is highly rated for his expert handling of high-stakes investment treaty proceedings and offers particular expertise in energy-related disputes. He is also a well-respected arbitrator.