Investment Treaty Arbitration
We represent foreign investors and sovereign states in complex, high-value investment arbitrations.
We provide legal solutions tailored to the specific needs of our clients:
- Representing investors: We assist with treaty planning and investment structuring, helping clients to select the most favourable jurisdictions and treaties before an investment is made, thereby ensuring maximum legal protection.
- Representing states: We provide a strategic defence against high-value treaty claims and advise on state responsibility and treaty interpretation.
- Enforcement and sovereign immunity: We navigate the complex process of enforcing awards and manage the intricate issues of state immunity, ensuring that a win on paper becomes a win in practice.
Our team has extensive experience of conducting arbitrations under all major procedural rules:
- ICSID (International Centre for Settlement of Investment Disputes)
- UNCITRAL (United Nations Commission on International Trade Law)
- SCC (Stockholm Chamber of Commerce)
Depending on your requirements, we can act as:
- Lead Counsel: Taking full command of the case strategy, team coordination and advocacy.
- Co-counsel or local counsel: We collaborate with international law firms to provide regional expertise and integrated cross-border representation.
- Expert Witnesses: Preparing expert reports and legal opinions on complex procedural issues.
We recognise that high-stakes disputes require a multidisciplinary approach. To ensure the best results, we frequently collaborate with:
- International law firms: We work with leading international law firms to ensure your case is in safe hands.
- Specialised experts: We maintain close relationships with forensic and valuation experts, private investigators and third-party funders.
Selected experience
Publications
Ukrainian Chapter of the Law Over Borders Commercial Litigation Guide by The Global Legal Post
Our Managing partner Olexander Martinenko, Counsel Danylo Volkovetskyi, Managing associate Mariana Antonovych and Associate Arina Kolesnyk has contributed to the Ukrainian Chapter of the first Law Over Borders Commercial Litigation Guide by The Global Legal Post. This chapter highlights that despite ongoing challenges, Ukrainian commercial litigation remains modern, functional, and highly accessible. Through electronic filing, […]
Legal alerts
Changes to the Ukrainian International Commercial Arbitration Law
Background On 28 April 2026, the Ukrainian Parliament has modified the International Commercial Arbitration Law of Ukraine (the Law) by introducing the following three key changes: On 19 May 2026, the Law was signed by the President of Ukraine. 1. Expanded Scope of the “International Dispute” Now, a dispute qualifies as “international” not only when […]
From Moot Court to Guest Lectures: AMV team shares experience with Kyiv-Mohyla Academy’s students
One of the key directions of our work at AMV Law Offices is engaging with the next generation of lawyers. Over the past few weeks, our team has been actively involved in several initiatives to support young legal professionals, through coaching moot court teams and lecturing at the National University of Kyiv-Mohyla Academy. We are […]
Our team contributed to the UAA’s Amicus Curiae Brief for the Supreme Court
We are pleased to share that our Managing Associate, Mariana Antonovych, and Associate, Arina Kolesnyk, as part of a Ukrainian Arbitration Association’s Working Group, contributed pro bono to an Amicus Curiae Brief for the Supreme Court (Case No. 910/11283/25). This case touches upon fundamental principles of arbitration. By clarifying the ‘fallback’ mechanisms for appointing arbitrators, […]
AMV is recognized in Chambers Global 2026
We are pleased to announce that our team has been recognized in the recently released Chambers Global 2026 guide. This milestone is particularly meaningful as it represents one of our first major rankings as an independent dispute resolution boutique. We are proud of the individual recognition of our team in the Dispute Resolution: International category: […]
Olexander Martinenko speaks at the Sovereign & States Disputes and Enforcement Summit in London
We are pleased to share that our Managing Partner, Olexander Martinenko, was a speaker at the recent ThoughtLeaders4 | Sovereign & States Disputes and Enforcement Summit in London, in February 2026. Participating in a panel focused on the FSU region, Olexander contributed to a discussion on the shifting landscape of disputes involving sovereigns and State-Owned […]
Publications
From Public Courts to Private Panels: Ukraine’s ADR Transformation
As Ukraine grapples with geopolitical upheaval and economic uncertainty, private dispute-resolution mechanisms have emerged as vital alternatives to an overburdened court system. Olexander Martinenko and Danylo Volkovetskyi explore recent legislative reforms, market fragmentation, wartime influences on institutional uptake, and the shifting preferences of businesses and state enterprises toward arbitration and mediation. CEELM: How would you characterize […]