This course will teach students the practical aspects involved in litigation of international trade and investment disputes. Its goal is to prepare students entering either private practice or government service to handle complex litigation in those fields. The course will provide a comparative analysis of the dispute settlement mechanism of the World Trade Organization (WTO) and Investor-State arbitration. While it will focus on procedural issues and case management, the first sessions will provide an overview of the legal framework of the multilateral trading system and investment treaty law. It will identify and analyze each phase of the proceedings of WTO disputes (under the Dispute Settlement Understanding) and of investor-State arbitrations (mainly under the arbitration rules of the International Centre for Settlement of Investment Disputes and Chapter Eleven of the North American Free Trade Agreement). Some of the topics that will be covered include: pre-trial preparation, formal initiation of a dispute, constitution of panels and tribunals, discretionary procedural issues, evidentiary issues, jurisdictional and other preliminary objections, written pleadings, conduct of hearings, use of witnesses and experts, awards and rulings, recourses, implementation and enforcement, and in general case management. The analysis and discussions in class will be based on treaty text, jurisprudence and the practical, hands-on experience of the professors. Guest-speakers – including practitioners, government officials, or staff from relevant international organizations – will be invited to a few sessions. Students will be expected to participate in class discussions and in simulations.