Investor-State Arbitration 2025

LITHUANIA Law and Practice Contributed by: Kęstutis Švirinas, Ieva Rimavičienė, Domantė Lunytė and Luka Tamulionytė, Sorainen

Sorainen has a dedicated team of over 20 arbitration specialists – including five partners and 15 qualified lawyers – who advise global clients. The team com- prises lawyers from Tallinn, Riga and Vilnius, working seamlessly with leading international law firms. So- rainen handles high-stakes commercial and inves- tor–state disputes, including landmark and sports arbitration cases. Notable representations in ISDS include representing Windoor AS against the Repub- lic of Kazakhstan, representing AS Tallinna Vesi and

United Utilities (Tallinn) B.V. against the Republic of Estonia, and representing UAB E energija against the Republic of Latvia, among others. Sorainen’s special- ists frequently sit as arbitrators for local, regional and international arbitration institutions (ICSID, ICC, SCC, DIAC and more), appear as experts (legal, tax, etc) in multi-jurisdictional arbitration proceedings and are represented in the EU Trade Agreements Arbitrator Pool. Sorainen is recognised for its depth, versatility and consistent excellence.

Authors

Kęstutis Švirinas is a partner and heads Sorainen’s dispute resolution and international arbitration practices in Lithuania. He has more than 20 years of experience and has significant experience in complex

Domantė Lunytė is a senior associate at Sorainen specialising in international arbitration, with over eight years of experience. She has extensive expertise in handling a wide range of large-scale commercial

disputes. Kęstutis has been involved as an arbitrator in more than 60 cases at the VCCA, the SCC and other arbitration institutes abroad, as well as in ad hoc arbitration. Kęstutis is included in the list of recommended arbitrators of the VCCA and the Arbitration of the Chamber of Commerce of the Republic of Moldova. Mr Švirinas is a member of the VCCA working group, which is responsible for amending the VCCA Rules of Arbitration.

disputes in both national courts and international arbitration forums. Over the years, Domantė has advised and represented clients in complex litigation matters, often involving high-value claims and intricate legal issues across various industries, including energy, wholesale, retail and others. She is a member of the Lithuanian Bar Association.

Luka Tamulionytė is an associate at Sorainen, a member of the Dispute Resolution and Risk Management team and the International Arbitration practice group. With three years of experience, she assists in national

Ieva Rimavičienė is counsel and co-head of Sorainen’s international arbitration practice group in Lithuania, having more than ten years of experience representing clients in various arbitration cases, including

courts and commercial arbitration, representing clients’ interests by preparing legal documents and supporting case strategy. Specialising in civil and commercial disputes, insolvency, EU law and international civil procedure, she focuses on delivering efficient and cost-effective solutions. Though still early in her career, she has already helped clients achieve success in complex and challenging court and arbitration proceedings.

shareholders’, corporate, contractual and energy disputes, and damages claims. Ieva is included in the list of recommended arbitrators by the VCCA and has been arbitrating cases both as a sole arbitrator and as a member of the arbitration panel. In 2024, Ms Rimavičienė was reappointed as a delegate to the ICC Commission on Arbitration and ADR for the second term and was also appointed to the Lithuanian Bar Association’s Committee on Arbitration.

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