Our Practice

Investment Treaty Arbitration


A key aspect of Sidley’s thriving multi-office International Arbitration practice involves the representation of clients in high-stakes investment treaty disputes before a wide array of international tribunals. We also help our clients leverage international law to deal successfully with the legal and diplomatic challenges of cross-border disputes.

In the area of investment treaty arbitration, Sidley has one of the largest dockets of high-profile investor-state cases. A sampling of our current and recent international treaty arbitration engagements is provided below.

Sidley represents multinational companies as claimants and governments as respondents in disputes arising under international trade agreements and investment treaties. Our International Arbitration practice regularly provides representation and advice to clients in investor-state proceedings pending before all major international arbitral institutions, including the ICSID, the ICC, the PCA at The Hague, and the SCC. In addition, we have extensive experience handling ad hoc investor-state arbitration proceedings (i.e., non-administered cases) under the UNCITRAL Rules and the ICSID Additional Facility Rules. Moreover, Sidley represents the principal forum for such cases, ICSID, in litigation arising out of such arbitrations.

The International Arbitration team also advises Sidley’s corporate clients on structuring cross-border investments to take advantage of the protections and arbitration options that investment treaties have to offer.

As well as representing parties in international arbitrations, members of the Sidley team also serve as arbitrators to adjudicate such disputes and as investment policy advisors to governments around the world. In addition, members of the Sidley team have negotiated international investment treaties as representatives of their respective governments.

Our global dispute settlement team includes individuals who have served as:

  • General Counsel in the Office of the U.S. Trade Representative.
  • Senior Counsel for Dispute Settlement in the Office of the U.S. Trade Representative.
  • Vice Minister of Foreign Affairs of a European state, in charge of trade and investment, among other matters.

See below for a list of representative engagements, an overview of bilateral investment treaties, and a selection of our lawyers’ recent arbitral appointments.

Sidley also has a recognized practice in international commercial arbitration that is described in detail here.

For a list of Investment Treaty publications, click here.

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