Ranked in 4 Practice Areas
3

Band 3

Arbitration (International)

Global Market Leaders

4 Years Ranked

3

Band 3

Public International Law

Global Market Leaders

4 Years Ranked

3

Band 3

Arbitration (International)

Europe-wide

14 Years Ranked

3

Band 3

International Arbitration

France

5 Years Ranked

Ranked in Guides

About

Provided by Claudia Annacker

Global

Practice Areas

Dr. Claudia Annacker focuses her practice on 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 30 investment treaty arbitrations and regularly advises investors on structuring their investments to benefit from, or improve, investment treaty protections.

Dr. Annacker is an adjunct professor at the University of Vienna, where she teaches advanced research seminars in international responsibility and international dispute settlement and has 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 Advocay

American Society of International Law

European Society of International Law

German Society of International Law

International Law Association

Chambers Review

Provided by Chambers

Global

Arbitration (International) - Global Market Leaders
3
Band 3

Claudia Annacker regularly leads matters involving human rights, international criminal law, issues of state recognition and international environmental law. She often handles cases in Europe and the Middle East.


Public International Law - Global Market Leaders
3
Band 3

Claudia Annacker regularly leads matters involving human rights, international criminal law, issues of state recognition and international environmental law. She often handles cases in Europe and the Middle East.


Arbitration (International) - Europe-wide
3
Band 3

European states mandate sole practitioner Claudia Annacker for her strength in complex investor-state arbitrations under ICSID rules, often in relation to infrastructure, energy and financial disputes. She equally represents investors in cases.


International Arbitration - France
3
Band 3

Claudia Annacker mostly handles ICSID and UNCITRAL arbitrations. She is highly sought after by European and Middle Eastern sovereign states and state-owned companies. She launched her own independent practice in January 2024.

Strengths

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Annacker International Disputes

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Band

Europe-wide

Arbitration (International)

Claudia Annacker
3
Claudia Annacker
3
Band 3

France

International Arbitration

Claudia Annacker
3
Claudia Annacker
3
Band 3

Global Market Leaders

Arbitration (International)

Claudia Annacker
3
Claudia Annacker
3
Band 3
Public International Law

Claudia Annacker
3
Claudia Annacker
3
Band 3