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.
Consistently recognized as a leading lawyer and expert in international arbitration by Chambers and The Legal 500, she is described as “an investment treaty specialist with a phenomenal reputation…profound practical experience and high academic knowledge of international treaty disputes,” a “strategy maestro with a unique and impressive presence in the court room” and “highly respected by tribunals and opposing counsel.” She is also noted for her “second-to-none knowledge of theory of international law and arbitration practice.” Benchmark Litigation named Dr. Annacker “Lawyer of the Year” France (2019), as well as a “Dispute Resolution Star” in international arbitration (2020). Who’s Who Legal has also selected her as a “Thought Leader.”
Dr. Annacker also acts as arbitrator. She was appointed to the ICSID Panel of Arbitrators in 2020.
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.
- The Hellenic Republic in an ICSID arbitration commenced by Poštová banka a.s. and its Cypriot shareholder under the Hellenic Republic-Slovak Republic and the Hellenic Republic-Cyprus bilateral investment treaties relating to sovereign bonds.
- The Hellenic Republic in two separate ICSID arbitrations commenced by Cyprus Popular Bank Public Co. Ltd and Bank of Cyprus Public Co. Ltd under the Cyprus-Hellenic Republic bilateral investment treaty relating to measures taken to address the Hellenic Republic’s financial and sovereign debt crisis.
- Georgia in an ICSID arbitration commenced by Mr. Nasib Hasanov, under the Georgia-Azerbaijan bilateral investment treaty, in connection with an investment in a Georgian internet service provider that owns a 1,200 km submarine, fiber-optic cable across the Black Sea, connecting Europe and the South Caucasus.
- The Republic of Austria in an ICSID arbitration under the Austria-Malta bilateral investment treaty in the banking services sector.
- The Republic of Côte d’Ivoire in an ICSID arbitration commenced by Wise Solutions CDI, SA arising out of a dispute relating to a concession contract for waste management services in Abidjan.
- Georgia in an UNCITRAL arbitration brought by a group of investors under the US-Georgia bilateral investment treaty relating to a real estate project.
- The Arab Republic of Egypt in an ICSID arbitration commenced by H&H Enterprises Investments, Inc. under the US-Egypt bilateral investment treaty relating to the development of a tourist resort.
- The Arab Republic of Egypt in an ICSID arbitration commenced by Unión Fenosa Gas under the Spain-Egypt bilateral investment treaty relating to an investment in an LNG plant and ensuing annulment proceedings.
- The Republic of Iraq in an ICC arbitration against the Republic of Turkey for breaches of intergovernmental agreements governing the operation of transnational oil pipelines and related facilities.
- The Republic of Iraq in a VIAC arbitration concerning claims under financial arrangements in violation of the financial sanctions imposed by the UN Security Council on the Saddam Hussein regime.
- OJSC Tatneft in an UNCITRAL arbitration brought against Ukraine under the Russia-Ukraine bilateral investment treaty relating to an investment in a refinery and ensuing annulment and enforcement proceedings.
- The Republic of Tatarstan and its Ministry of Land Property Relations in an UNCITRAL arbitration against Ukraine under the Russia-Ukraine bilateral investment treaty relating to an investment in a refinery.
- DP World in an ICSID arbitration against the Republic of Peru under a concession agreement for the development and operation of the South Pier of the Port of Callao and the UK-Peru bilateral investment treaty.
- The Russian Federation in three parallel UNCITRAL arbitrations under the Energy Charter Treaty commenced by one Isle of Man and two Cypriot companies, in their capacities as former majority shareholders of Yukos Oil Company, and ensuing annulment proceedings before the Hague District Court.
- The Russian Federation in an SCC arbitration under the UK-Soviet bilateral investment treaty relating to Yukos Oil Company’s liquidation.
- Électricité de France (EDF) in an ICC arbitration initiated by the Federal State of Baden-Württemberg, through a special purpose company, which had acquired EDF’s shareholding in the German energy company Energie Baden-Württemberg AG (EnBW).
- OAO Gazprom in an UNCITRAL arbitration brought against the Republic of Lithuania under the Russia-Lithuania BIT concerning the forced divestiture of AB Lietuvos Dujos' natural gas transmission operations and assets.
- The Republic of Slovenia in two Chamber and Grand Chamber proceedings before the European Court of Human Rights in disputes concerning liabilities arising out of the former Socialist Republic of Yugoslavia’s guarantee of foreign currency deposits.
- E.T.I. Euro Telecom International N.V. in ICSID and UNCITRAL arbitrations against Bolivia under the Netherlands-Bolivia bilateral investment treaty in the telecommunication sector.
- The Bank for International Settlements in proceedings before an arbitral tribunal established pursuant to Article XV of the Agreement signed at The Hague on January 20, 1930 commenced by the Bank’s former private shareholders seeking additional compensation for the mandatory redemption of their shares.
Includes matters handled prior to joining Dechert.
- University of Vienna, Master in Law, 1990
- University of Vienna, Doctor iuris (Dr. iur.), 1992
- University of Vienna, Venia legendi et docendi (habilitation), 1997