Attracting client praise for its ‘commercial awareness, responsiveness, and unwavering commitment to client objectives’, Quinn Emanuel Urquhart & Sullivan, LLP has notable industry strength in the energy and infrastructure sectors, handling investment treaty arbitrations for both state and investor-side clients. Arbitration specialist trio Stephen Jagusch KC, the ’brilliant’ Anthony Sinclair, and Epaminontas Triantafilou jointly lead the team. Jagusch specialises in investor-state arbitration in the energy and construction sectors; Sinclair handles energy and mining sector work; while Triantafilou has previous experience from the PCA.
Legal 500 Editorial commentary
Accolades
Client satisfaction
Testimonials
Collated independently by Legal 500 research team.
‘An impressive group of star performers.’
‘Anthony Sinclair is brilliant. He sees what matters and focuses directly on it.’
‘The practice demonstrates a high degree of sophistication, consistently meeting and exceeding the benchmarks expected of a leading legal service provider. What makes the practice unique is its ability to seamlessly integrate technical legal excellence with strategic, commercially attuned advice, ensuring relevance and value in a rapidly evolving legal and regulatory landscape.'
- 'Clients would readily identify the breadth and depth of the team’s capabilities as key strengths. The practice benefits from a cohesive, multidisciplinary approach, enabling it to manage complex matters across jurisdictions with efficiency and precision.'
- 'Overall, the practice demonstrates an exemplary standard of legal service, combining excellence, innovation, and integrity in a manner that is both distinctive and aligned with the expectations of sophisticated clients.’
‘The individuals within the team stand out for their exceptional professionalism, deep engagement in every stage of the matter, and consistent delivery of significant, measurable results. What differentiates them from their counterparts is not only their technical proficiency but also their commercial awareness, responsiveness, and unwavering commitment to client objectives.'
Key clients
- Ukraine (ABH)
- DP World
- Schindler Holding AG
- United Group B.V.
- JSC Oschadbank
- Lundin Energy AB
- Ukraine (Du Tao et al)
Work highlights
Representing Ukraine in a high-value ICSID arbitration brought by Luxembourg-based ABH Holdings regarding the alleged nationalization of Alfa-Bank Ukraine (now JSC Sense Bank) through sanctions and banking laws.
Representing the investor in an ICSID investment treaty arbitration against Georgia.
Acting for DP World Limited in relation to the unlawful interference with its container terminal concession at the Port of Antwerp.
Lawyers
Hall of Fame
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Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Anthony Sinclair
Practice head
Stephen Jagusch KC; Anthony Sinclair; Epaminontas Triantafilou
Other key lawyers
Dominic Roughton; Alex Gerbi; Julianne Hughes-Jennett; Hafsa Zayyan; Marina Boterashvili; Manthi Wickramasooriya