News date: 12 February 2026
Ilyashev & Partners Law Firm has received the highest recommendation from the international ranking Chambers Global 2026, securing Band 1 in Dispute Resolution in Ukraine. The research results were published on February 12, 2026.
Senior Partner Roman Marchenko and Managing Partner Mikhail Ilyashev are featured in Chambers Global 2026’slist of the best dispute resolution lawyers, being ranked Band 1 and Band 2 among lawyers in Domestic Dispute Resolution.
Roman Marchenko is the only lawyer recommended in both Domestic Dispute Resolution and International Dispute Resolution practices.
The Dispute Resolution practice is at the core of the firm’s profile. Ilyashev & Partners’ team handles more than 500 court cases annually, commercial conflicts, and related proceedings involving corporate, contractual, and financial relationships.
Dispute Resolution
Domestic Dispute Resolution (Band 1)
Leading Lawyers: Roman Marchenko (Band 1) and Mikhail Ilyashev (Band 2)
International Dispute Resolution (Band 2)
Leading Lawyer: Roman Marchenko (Band 3)
What the Team is Known For
Ilyashev & Partners is renowned for its strong presence on the domestic litigation scene, with outstanding capabilities in commercial dispute resolution. The law firm is particularly active in corporate, contractual, tax, and major debt recovery disputes, and in assisting with matters against state authorities and banks.
The legal practice acts in notable energy-sector disputes. Ilyashev & Partners is also active in cross-border disputes, including international arbitration, with particular experience in commercial arbitration mandates.
The law firm has noteworthy activity in shareholder disputes and in the defence of significant businesspeople against allegations of embezzlement and fraud. The legal practice is active in applying to the ECtHR in disputes relating to alleged infringement of property rights.
Strengths
Clients highlight that the Ilyashev & Partners’ team combines strategic vision with a deep understanding of cross-border disputes. Ilyashev & Partners’ lawyers are precise, relentless in preparation, and able to adapt litigation tactics swiftly to changing circumstances. They remain focused on achieving commercially sound outcomes.
Leading Lawyers
Managing partner Mikhail Ilyashev is highly regarded for his wealth of expertise in handling a wide variety of litigation, including in relation to the agriculture, manufacturing, and energy industries.
“Mikhail is renowned for his litigation expertise and persuasive courtroom advocacy. He combines procedural mastery with strategic insight, ensuring that each case is approached with precision,” says the source.
Senior partner Roman Marchenko is a market-leading litigator handling disputes in Ukrainian courts. He also has a notable presence in international arbitration, representing clients from the banking, aviation, and energy sectors.
“Roman Marchenko is a brilliant lawyer and very responsive. He is an excellent expert in Ukrainian courts and litigation in general,” clients note. “Roman Marchenko is an exceptional litigator. His strategic mindset, deep understanding of complex disputes, and unwavering dedication to his clients are truly impressive.”
Chambers Global is a prestigious international legal directory, founded in 1990, that researches legal markets in over 200 jurisdictions. The publication conducts in-depth research, recognizing top lawyers and leading global law firms based on casework, client feedback, and peer reputation. In 2023-2024, due to the war in Ukraine, Chambers Global temporarily suspended the publication of ranking tables and the division of dispute resolution practices into national and international categories.