Claudia Annacker

Practice Areas

Dr. Claudia Annacker specializes in international arbitration and litigation and public international law matters, in particular investor-State disputes, inter-State disputes, disputes involving international organizations and human rights cases. She has represented states and investors in more than 35 investment treaty arbitrations and also served as an arbitrator in investment treaty and commercial arbitrations.

Dr. Annacker is a member of several arbitrator panels, including the ICSID Panel of Arbitrators and the SIAC Panel of Arbitrators. She serves on the SIAC Court of Arbitration and the VIAC Board.

Dr. Annacker holds a venia docendi (habilitation) for public international law and is an adjunct professor at the University of Vienna, where she teaches advanced research seminars in public international law and supervises PhD theses. She has also been a visiting professor at the Paris Ouest Nanterre La Défense University. She has published widely in the fields of international arbitration and public international law.

Professional Memberships

Court of Arbitration of the Singapore International Arbitration Centre

Board of the Vienna International Arbitral Centre

Energy Charter Treaty Legal Advisory Task Force

Board of Trustees of the Foundation of International Arbitration Advocacy

American Society of International Law

European Society of International Law

German Society of International Law

International Law Association