England - London • Dispute resolution

Quinn Emanuel Urquhart & Sullivan, LLP

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'One of the most experienced and successful international investment law groups in the field', Quinn Emanuel Urquhart & Sullivan, LLP has significant experience in PIL and investment treaty arbitration work. The London team handles disputes for (and against) sovereign parties in all major fora, including arbitration, transnational litigation and enforcement proceedings; and it is particularly well known for mega-value arbitrations involving states and state entities, in relation to the oil, gas, mining, energy, telecoms, construction and infrastructure sectors. International commercial and investment treaty arbitration specialist Stephen Jagusch KC is the firm's global international arbitration chair; Anthony Sinclair focuses on the energy, mining, telecoms, infrastructure, utilities, and oil and gas sectors; Epaminontas Triantafilou is 'particularly astute and meticulous'; Alex Gerbi's broad practice incorporates investor-state arbitrations; and Julianne Hughes-Jennett leads the firm’s business and human rights unit. Of counsel Jagdish Menezes also acts in investor-state claims.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘One of the most experienced and successful international investment law groups in the field.’

  • ‘Motivated and hard working.’

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Key clients

  • Ukraine
  • DP World

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Work highlights

  • Represented PJSC Oschadbank in UNCITRAL arbitration proceedings against the Russian Federation (over the latter’s expropriation of Oschadbank’s business in Crimea).
  • Represents a major bank in an investment treaty arbitration against a sovereign state, in connection with the expropriation of its assets.

Abbreviated data is displayed for this firm.