Ilyashev & Partners

Kyiv Office // Dispute Resolution, Energy, Mining & Minerals

Attorney at Law, Counsel, Co-Head of Dispute Resolution Practice

Oleh Trokhymchuk has been with the firm since 2002, shaping and developing its dispute resolution practice across key sectors of the economy. His professional reputation is built on handling complex, multi-layered, high-stakes litigation where the outcome is of strategic importance to the client’s business.

Oleh focuses on comprehensive court representation of businesses, protection of shareholders’ and partners’ rights, resolution of corporate conflicts, debt recovery, property disputes, and challenges to transactions. His practice includes developing procedural strategies in cases that affect companies’ future development and ownership structures. For more than 25 years, he has represented Ukrainian and international companies, as well as state-owned enterprises, in complex and high-profile litigation.

Oleh Trokhymchuk is recognised as one of Ukraine’s leading litigators in the energy and natural resources sectors. A substantial part of his practice involves regulatory disputes, energy contracts, licensing of mineral extraction, challenges to decisions by state authorities, and protection of companies’ interests in strategically significant industries. He also represents clients in disputes involving damages recovery and investment protection.

His practice focuses on sanctions disputes and strategic advisory on sanctions regulations. Oleh assists clients in challenging decisions by state authorities, structuring transactions in high-risk jurisdictions, and protecting business interests in disputes related to restrictive measures.

Oleh Trokhymchuk has significant experience in the pharmaceutical sector, banking, heavy industry, real estate, and construction. He combines deep litigation expertise with a strong understanding of industry-specific business environments.

English, Ukrainian, Russian

Kyiv City Bar Council

Institute of International Relations, Taras Shevchenko National University of Kyiv, International Law Faculty (Master of International Law)