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Dr. Weiler is available to serve as an arbitrator in commercial, investor-state, or state-state disputes. 

Please note: Dr. Weiler ceased accepting instructions as co-counsel in international investment disputes at the end of 2020. 

Dr Weiler possesses a broad range of experience in dispute settlement, involving a wide variety of economic sectors and industries, including:


Natural resources;

Oil & gas contracts and regulation;

Internet regulation;

Intellectual property;

Hospitality and gaming;

Automotive manufacturing;

Commercial and residential real estate development;

Environmental regulation;

Logistics and project management; 

Development bank-funded projects;

Electronic commerce; and

Tobacco regulation.


As a consultant, Dr Weiler provides discrete and timely advice on the conduct of investor-state arbitrations.

Services provided include:

Assisting third-party funders in the evaluation of potential claims; 

Advising on matters of substantive law and the arbitral process;

Editing memorials and manuscripts; 

Advising on laws applicable to arbitrator selection or challenge.


When serving as an expert, Dr. Weiler provides:

Legal opinions for governments, NGO’s, and potential claimants on investment disputes; and

Evidence to national courts both on international law and on questions of arbitral law and procedure.

What is Investor-State Dispute Settlement?

Investor-state dispute settlement provides foreign investors with potential relief when they have experienced, or are experiencing, business difficulties in a host country. Protection can be obtained from: (i) domestic foreign investment statures; (ii) contracts with, or concessions granted by, the government of the host country; or (iii) investment protection treaties.

Such protection typically extends to difficulties arising from the act(s) or omission(s) of any part of the host “state,” including: the executive, courts, legislature, any administrative or regulatory officials, state-owned monopolies, and even the conduct of the police or the military – whether at a national, state/provincial, or municipal level.

The arbitration process begins with the submission of a claim for compensation to an impartial, independent and international tribunal – established either on an ad hoc basis or under the auspices of an international arbitral institution such as the International Centre for the Settlement of Investment Disputes. Mediation and/or conciliation options are also typically available.

Prudent investors should always be careful to ensure that their investments have been made or maintained in such a manner as to qualify for protection under one or more domestic foreign investment laws and/or investment protection and promotion treaties.

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