Investor-State Arbitration

Weil has handled many of the highest-value and most complex investor-state disputes, involving virtually every type of investment arising from almost every corner of the globe.
We have successfully represented both investors and states in arbitration arising out of bilateral investment treaties (BITs), multilateral investment treaties (such as NAFTA, CAFTA-DR, and the Energy Charter Treaty), investment agreements, and domestic investment laws.

We combine a substantive understanding of international investment law with skills in arbitral advocacy, a deep understanding of the political and commercial settings in which these cases arise, and extensive experience in successfully resolving these cases – both by arbitrating them to conclusion and by negotiated settlement.

In addition to having distinguished careers in private practice, a number of our lawyers previously served in high-ranking positions in the United States Government (including in the White House, the State Department, and the Office of the U.S. Trade Representative), where they negotiated some of the most significant investment treaties in the world (including, for example, NAFTA and CAFTA-DR), and represented the United States in major international disputes.

We have handled not only investor-state arbitration cases through award but also ICSID annulment proceedings and other post-award challenges, as well as recognition and enforcement proceedings.

Selected Representations

Recent Investor State Matters

MOL Hungarian Oil and Gas Company

Williams Companies

Republic of Ecuador

Government of Hungary

Ranked among the top 20 law firms in the world for Dispute Resolution

Chambers Global 2013 – 2017

Weil Named Among Top International Arbitration Practices in the U.S.

Legal 500 US 2019