Ilyashev & Partners boasts experience advising on white-collar crime matters across a range of industries, including hospitality, construction, and real estate. The team specialises in representing witnesses in criminal cases, individuals under criminal investigations, and those accused of business-related crimes. Its matters include handling allegations of fraud, money laundering, and embezzlement. Kostiantyn Kryvenko, who was promoted to team head in March 2025, brings corporate client liability expertise. Other key figures include Roman Marchenko and Mikhail Ilyashev. Marchenko advises clients on cross-border tax evasion cases, while Ilyashev regularly acts for Ukrainian businesspeople and politicians.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- ‘The team demonstrated deep expertise in criminal law and the ability to act swiftly and decisively. Our impression of the Ilyashev & Partners team can be summed up in one word: exceptional.'
- ‘Mikhail Ilyashev is the lawyer you want by your side when a criminal case threatens your business. He combines the authority of a courtroom advocate with the strategic vision of a crisis manager.'
- 'Ilyashev & Partners deliver much more than competent legal advice. The firm not only initiated criminal proceedings against offenders but also achieved the cessation of illegal practices through effective negotiations and out-of-court settlements.'
- 'We highly value their ability to combine professional legal protection with a pragmatic approach, as well as their attention to detail and sensitivity.'
- ‘Ilyashev & Partners treat a criminal investigation not only as a procedural challenge but as a complex, multi-layered legal battle. Few law firms in Ukraine combine such mastery of criminal procedure with industry-specific expertise.'
- 'The firm did not limit itself to defensive tactics. They took control of the process, identifying procedural violations, blocking attempts at unlawful pressure, and ensuring that our position was clearly documented at every stage.’
Key clients
- Plant 410 CA
- Gökşin İnşaat
- First Kyiv Machine-Building Plant
- Stalkanat
- PZU Ukraine
- Ferrexpo AG
- BTA Bank
Work highlights
Represented foreign investors in a $120m case involving corporate asset recovery and reversal of unlawful state registry manipulations linked to one of the largest corporate raiding attempts in Ukraine’s industrial sector.
Represented Ukrainian businessman in a politically sensitive white-collar criminal case prosecuted by the National Anti-Corruption Bureau of Ukraine, with claims exceeding $25m, including European Court of Human Rights proceedings regarding excessive bail and detention conditions.
Represented a Ukrainian company in a criminal investigation initiated by the National Anti-Corruption Bureau of Ukraine over alleged procurement irregularities in high-value defence contracts during wartime.
Lawyers
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Practice head
Kostiantyn Kryvenko