
Ilyashev & Partners regularly participates in complex cross-border litigations involving two or more jurisdictions. Although the team’s main focus remains on traditional specialist areas of dispute resolution, such as tax litigation, debt collection, shareholder disputes, intellectual property and real estate disputes, there has recently been a strong focus on domestic insurance disputes. Managing partner Mikhail Ilyashev handles high-profile, multi-jurisdictional mandates with a primary focus on energy and corporate disputes. Roman Marchenko takes the lead on international arbitrations. Oleh Trokhymchuk and Andrii Konoplia jointly lead the dispute resolution practice, providing expertise in banking and energy mandates, as well as bankruptcy procedures.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- ‘The litigation partners of the firm posses a flexible approach to preparing the litigation strategy depending on client needs. In addition, they are capable of swiftly adjusting the agreed strategy according to new circumstances or the counterpart's moves.’
- ‘I closely worked with Oleh Trokhymchuk, who is very responsible and has a client-oriented approach. He has very deep and up-to-date knowledge of all litigation nuances and peculiarities.’
- ‘Ilyashev & Partners is, without exaggeration, the elite litigation force in Ukraine. What makes their practice unique is its combination of unflinching tenacity and deep strategic insight. They are the firm you hire when the stakes are existential and a win is the only acceptable outcome. Potential clients should know that this team thrives on complex, high-pressure disputes that would intimidate other firms.'
- 'Their key strength is a profound understanding of the Ukrainian judicial system, not just from the books, but from decades of hands-on, courtroom experience. They know the players, the procedures, and the pressure points better than anyone.'
- ‘Mikhail Ilyashev is a master strategist with unparalleled influence and a "big picture" vision. What makes him stand out is his ability to see beyond the immediate legal conflict and understand the business, political, and reputational factors at play. We have valued his calm, authoritative guidance during our most critical disputes. His involvement in a case sends a clear signal to the opposing side that the matter is being taken with the utmost seriousness.'
- ‘Ilyashev & Partners is the law firm we turn to for all important disputes. They have a strong team and many years of experience in Ukraine and abroad. We worked with them on very complex cases, and they always protected our interests in the best way.’
Key clients
- Biopharma
- CENTRAVIS
- Plant 410 Civil Aviation
- Coca-Cola Beverages Ukraine
- COFCO Agri Resources Ukraine
- CRH Ukraine
- Ferrexpo AG
- J.S. Corrugating Machinery Co., Ltd
- Dr. Reddy’s Laboratories
- GrainCorp
- Group DF
- Ukrainian Fencing Federation
Work highlights
Represented a major Ukrainian business group in a large financial compensation claims, involving multi-jurisdictional asset freezing measures and corporate rights in Ukraine and abroad.
Managed one of Ukraine’s major corporate insolvencies affected by military occupation.
Represented a global insurance company in a war risk insurance claim related to the destruction and loss of aircraft.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Roman Marchenko; Mikhail Ilyashev; Oleh Trokhymchuk; Andrii Konoplia
Other key lawyers
Valeriia Gudiy; Sergey Nedelko



