Allen & Overy LLP

Public International Law Department

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What the team is known for Magic circle heavyweight fielding a well-respected arbitration practice. Highly rated for its skilful handling of investment treaty disputes on behalf of both sovereigns and investors. Wins further recognition for its thriving sanctions practice and expert advice on sovereign immunity, Energy Charter Treaty claims, WTO matters and EU law. Also noted for its increasingly strong business and human rights offering. Its esteemed bench spreads across its extensive network of offices, with particular strength in London, Paris, Hong Kong and Singapore.

Strengths The firm is highlighted as "a powerhouse" in international arbitration, and market sources draw attention to its robust investment treaty practice, noting: "They clearly know what they're doing."

Work highlights Defended the Kingdom of Morocco in ICSID proceedings brought by a Swedish investor.

Prevailed on behalf of Masdar in its ICSID claim against the Kingdom of Spain regarding its investments in solar power installations, obtaining a EUR64.5 million award against the state for breach of the Energy Charter Treaty's fair and equitable treatment clause.

Notable practitioners Key contacts include Marie Stoyanov in Paris and Matthew Hodgson in Hong Kong.