Investor-State Arbitration

Debevoise is unmatched in the field of international investor-state arbitration. No other firm combines leading practices in international commercial arbitration, investment treaty arbitration and public international law.

Read Full Description

Featured Topic

The Debevoise team has authored various guides and tools to further the practice of international arbitration, including the industry standard setting Efficiency Protocol, and the Protocol to Promote Cybersecurity in International Arbitration.

These resources can be found here.


Winner in the “International Arbitration Practice that Impressed” category

GAR Awards, 2020


One of only two firms to be ranked in Band 1 for global-wide capabilities in International Arbitration, Public International Law and Dispute Resolution by Chambers Global (2020).

It is really an all star team […] each individual is a star. It really is something to see them in action.

This is an exceptional firm […] one of the top three best arbitration firms in the world.

A real powerhouse. Not only do they handle a significant volume of work in this field but they are thought leaders, they can handle complex matters better than almost anyone else and they're hard to beat.

They provide top-notch analysis and their ability to bring in their expertise in both public and private international law is invaluable. They gave us an incredible amount of time and attention and the highest-quality legal advice.

Chambers Global, 2019-2020

They set the standard. They just do exceptional work; it’s very complex and very detailed.

—Chambers USA, 2020

The firm is “super responsive” and offers “strategic thinking and advice.”

As a client you “feel extremely well supported and in excellent hands.”

GAR 30, 2019

In the international disputes arena, Debevoise’s lineup is bulletproof. You can’t go wrong with any of these people.

Benchmark Litigation

International Arbitration Firm of the Year

Benchmark Litigation U.S. Awards 2019

The best international arbitration practice in the world.

Debevoise & Plimpton LLP excels in handling investment arbitration, coupled with commercial arbitration and public international law in ‘a seamless and efficient manner.’

The Legal 500 US, 2019-2020

Learn More