Department profile
Ilyashev & Partners

Dispute Resolution: Domestic

Europe Guide 2026 : Ukraine

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Ilyashev & Partners

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About

Provided by Ilyashev & Partners

Dispute Resolution is a core practice at Ilyashev & Partners, consistently recognized by Chambers and The Legal 500 as one of the leading teams in Ukraine. We represent clients in complex disputes before all levels of Ukrainian courts, including the Supreme Court, and in high-profile international arbitration proceedings.

Our expertise covers the full range of commercial disputes: shareholder conflicts, contractual and corporate claims, IP litigation (trademark, patent and anti-counterfeiting), employment and labour disputes, real estate and construction, insurance, and regulatory matters. We also advise on disputes in public procurement, competition, tax, customs, and sanctions compliance, as well as large-scale insolvency and restructuring cases involving state-owned enterprises and multinationals.

We have extensive experience in international arbitration under ICSID, UNCITRAL, SCC, ICC, LCIA, and LMAA rules, handling multi-billion investment claims and acting as Ukrainian law experts abroad. Our team also excels in white-collar defence and investigations, including fraud, embezzlement, money laundering, and corporate misconduct.

Each year we manage over 500 disputes, many cross-border and highly complex. With 40+ lawyers across Kyiv, Kharkiv and Odesa, we have the scale, reputation, and local presence to deliver effective dispute resolution in Ukraine and internationally.

More details are available at: https://attorneys.ua/en/service/dispute-resolution/

Clients (26)

  • Auchan
  • American Club
  • Biopharma
  • British Marine
  • Centravis
  • Claas
  • Coca-Cola Beverages Ukraine
  • COFCO
  • CRH Ukraine
  • Ferrexpo AG
  • GrainCorp
  • Dr. Reddy’s Laboratories
  • Gard
  • Grindeks
  • Japan P&I Club
  • Mondelēz Ukraine
  • Nestlé
  • PZU Ukraine
  • Skuld
  • The London P&I Club
  • The Standard Club UK Ltd
  • The Swedish Club
  • Ukrainian Red Cross Society
  • Ukrrichflot
  • Unilever Ukraine
  • Ukrspecexport

Industries (21)

  • Aviation
  • Agribusiness
  • Public Sector
  • Infrastructure
  • Medicine & Healthcare
  • Real Estate & Construction
  • Advertising & Marketing
  • Retail
  • Insurance
  • Shipping
  • IT Technologies, Media and Telecommunications
  • Transport & Logistics
  • Pharmaceuticals
  • Financial Technologies
  • Private Client
  • Energy & Natural Resources
  • Industrials & Manufacturing
  • Martial Law & War Crimes
  • Sports
  • FMCG
  • Mining

Chambers Review

Provided by Chambers

Dispute Resolution: Domestic - Ukraine

Band 1

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 disputes within the energy sector. 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 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.

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Work Highlights

Provided by Chambers

  • Ilyashev & Partners represented Creative Group in the client's bankruptcy case, managing creditor claims that amounted to USD660 million.

Strengths

Provided by Chambers

  • Ilyashev & Partners is precise, relentless in preparation and able to adapt litigation tactics swiftly to changing circumstances. They remain focused on achieving commercially sound outcomes.

    Dispute Resolution: Domestic respondentEurope

  • Ilyashev & Partners combines strategic vision with a deep understanding of cross-border disputes. Their guidance is consistently reliable.

    Dispute Resolution: Domestic respondentEurope

  • What makes it even more valuable for us is that all of these outstanding lawyers at Ilyashev & Partners remain in Ukraine and continue to work here despite the difficult circumstances.

    Dispute Resolution: Domestic respondentEurope

  • Th lawyers at Ilyashev & Partners combines unmatched scale with almost surgical precision.

    Dispute Resolution: Domestic respondentEurope

Notable Practitioners

Provided by Chambers

  • Roman Marchenko
    Roman Marchenko

    Roman Marchenko

    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.

      Dispute Resolution: Domestic respondentEurope

    • Roman Marchenko is an exceptional litigator. His strategic mindset, deep understanding of complex disputes and unwavering dedication to his clients are truly impressive.

      Dispute Resolution: Domestic respondentEurope

    • Roman Marchenko turned what seemed like an impossible battle into a complete success. With Roman leading the charge, we always knew we had the strongest advocate on our side.

      Dispute Resolution: Domestic respondentEurope
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  • Mikhail Ilyashev
    Mikhail Ilyashev

    Mikhail Ilyashev

    Managing partner Mikhail Ilyashev is highly regarded for his wealth of expertise in handling a broad variety of litigation, including in relation to the agriculture, manufacturing and energy industries.

    • Mikhail Ilyashev is a lawyer who does not know defeat - he leads his team to victory even in situations that seem hopeless at first glance.

      Dispute Resolution: Domestic respondentEurope

    • 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.

      Dispute Resolution: Domestic respondentEurope

    • His negotiation skills and ability to find compromises are truly unique.

      Dispute Resolution: Domestic respondentEurope
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Ranked Individuals at Ilyashev & Partners (3)

Ukraine

Members

Provided by Ilyashev & Partners

  • Andriy Lytvyn

  • Vyacheslav Sytyi

  • Valeriia Gudiy

  • Oleksandr Denysenko

  • Marina Riashchenko

  • Olena Omelchenko

  • Volodymyr Adonin

  • Dmytro Hruba

  • Oleh Trokhymchuk

    Head of Department

  • Sergiy Kliestov

  • Yaroslav Mudryi

  • Andrii Konoplia

    Head of Department

  • Yevgen Solovyov

  • Vadym Kizlenko

  • Oleksandr Fefelov

  • Dmytro Hrybov

  • Sergey Nedelko

  • Roman Protsyshyn

  • Kostiantyn Kryvenko

  • Alla Tsymanovska

  • Kateryna Solodovnyk

  • Roman Marchenko

    View profile of Roman Marchenko

  • Mikhail Ilyashev

    View profile of Mikhail Ilyashev

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