Greta Koerner

• Represented a Bulgarian company in an ICC arbitration, seated in Switzerland, in connection with a joint venture with a German start-up.
• Represented a U.S. mining consortium in an ICC arbitration, seated in Switzerland, against an African company and its U.S. parent company relating to shipping rights.
• Represented an ultra-high-net-worth individual in an ICC arbitration, seated in Switzerland, concerning the disputed division of complex assets valued at approximately USD 1 billion.
• Represented an investor in an ICSID arbitration against a Middle Eastern state with claims valued at approximately USD 1 billion.
• Represented a global biotechnology company in an ICC arbitration, seated in London, in connection with a joint venture.

Greta Körner advises multinational corporations, sovereign entities, and high-net-worth individuals on complex international commercial and investment arbitration disputes. Trained in both civil and common law traditions, she brings a practical, results-oriented approach to cross-border dispute resolution — delivering incisive strategic counsel and compelling advocacy to help clients protect their business interests and resolve their most significant disputes.

Admitted in Germany and New York, Greta operates fluently across legal systems and represents clients in arbitrations under leading institutional rules, including the ICC, ICSID, and other major regimes. She has acted in proceedings involving claims of up to USD 1 billion, with particular depth in the life sciences, energy, and technology sectors.

Greta also sits as arbitrator in commercial disputes and has served as tribunal secretary in large-scale, complex proceedings under various governing laws and seats — a combination that gives her a distinctive vantage point on how cases are won and lost from the decision-maker's seat, and which sharpens every aspect of her advocacy as counsel.

Greta is actively involved in the international arbitration community and serves as Co-Chair of DIS40, the German Arbitration Institute's network for practitioners under 40.