Antitrust & Competition in Kyiv, Odesa, and Kharkiv

SERVICES AND INFORMATION

Antitrust and Competition

Ilyashev & Partners’ antitrust and competition practice is among the most experienced and effective in Ukraine, handling the complete spectrum of competition law matters. Our expertise includes merger control, antitrust investigations, cartel cases, abuse of dominance, state aid, unfair competition, and competition aspects of public procurement.

Our team has extensive experience dealing with the Antimonopoly Committee of Ukraine (AMCU) and representing clients in complex and precedent-setting cases involving significant financial, regulatory, and reputational risks.

The firm has a strong track record of advising Ukrainian and international clients on multi-layered projects combining regulatory procedures, litigation, and strategic business advisory. We regularly represent clients in proceedings before the AMCU and Ukrainian courts, including the Supreme Court, and support complex cross-border transactions, ensuring full compliance with Ukrainian competition law requirements.

We advise clients on the application of Ukrainian competition law and AMCU practice, support clients during antitrust investigations, represent clients in court when AMCU decisions are challenged, conduct antitrust due diligence, assess risk in transactions and commercial models, and develop compliance and defence strategies tailored to industry needs.

Obtaining merger control clearance and approvals for concerted practices, including structuring M&A transactions, control analysis, preparation and filing of applications with the AMCU, and full support throughout review procedures
Advising on complex cross-border transactions and coordinating multi-jurisdictional antitrust filings
Representing clients in cases involving anti-competitive agreements, including bid rigging and collusion in public procurement procedures
Developing and implementing defence strategies in AMCU investigations, including responses to information requests and support during dawn raids and inspections
Supporting leniency applications in cartel cases in order to obtain full or partial immunity
Representing clients in cases of abuse of dominance, including preparing complaints and defending them in court
Advising on competition law aspects of commercial agreements, distribution models, vertical and horizontal restraints, and pricing policies
Advising on unfair competition and misleading advertising, including assessment of marketing materials, advertising campaigns, and business practices for compliance with applicable laws
Representing clients in unfair competition cases
Court representation in competition law disputes, including challenges to AMCU decisions
Comprehensive support in public procurement, including filing complaints with the AMCU, defence against disqualification, and support throughout tender procedures
Advising on state aid, including assessment of compatibility and interaction with the AMCU
Conducting antitrust due diligence in transactions, including risk assessment related to planned concentrations, concerted practices, and other potential violations
Development and implementation of antitrust compliance programs, including internal policies, commercial policies (pricing, sales, discount, and distribution), risk audits, and staff training
Developing and auditing commercial policies and internal procedures (such as policies on interacting with competitors, distributors, and customers) to minimize antitrust risks
Advising on interaction with regulatory authorities and mitigation of risks in strategically significant sectors
Supporting projects in highly regulated industries, including energy, infrastructure, manufacturing, pharmaceuticals, and defence procurement

OUR CLIENTS

Today we are working on projects for more than 400 active clients

About us

Reputable legal advisor

Founded in 1997, Ilyashev & Partners is one of the most prominent law firms in the Eastern European region. With offices in Kyiv, Kharkiv and Odesa, Ilyashev & Partners employs more than 120 people. The firm has been recognized by the most prestigious legal market research guides, according to which it occupies a leading position in Ukraine.

28
years in the market
40+
attorneys and lawyers
400+
clients regularly serviced
1000+
court hearings annually

Reliability

We provide assistance by:

Helping at any stage of the project.
Discussing the task with you, analyzing all prospects and risks.
Thorough studying of the problem, taking into account the special aspects of your business activities.
Developing a strategy, suggesting solutions and action plan.

“The success of our firm results from the professionalism and expertise of our team”
Roman Marchenko, Senior Partner

Team

Leading experts

Mikhail I. Ilyashev
Attorney at Law, Managing Partner, Honored Lawyer of Ukraine, Head of Corporate and M&A Practice

Leading Ukrainian attorney, recognized expert in complex commercial and corporate dispute resolution and strategic legal support of business.
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Oleksandr Y. Fefelov
Attorney at Law, Partner, Head of Antitrust and Competition Practice

Recognized expert in antitrust and competition law, public procurement, and state aid.
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Valeriia V. Gudiy
Attorney at Law, Partner

Recognized expert in employment, compliance, administrative and labor disputes, legal support during inspections of enterprises by the state regulatory authorities.
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Alina M. Borovets
Attorney at Law

Specialises in antitrust and competition law, commercial dispute resolution, and comprehensive business protection in regulatory and court proceedings.
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Andriy B. Lytvyn
Attorney at Law, Insolvency Receiver, Head of Kharkiv Office

Expert in dispute resolution, intellectual property protection, and comprehensive business defense in commercial, administrative, and tax disputes.
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All lawyers

TRUST IN THE COMPANY

Our cases

Protecting trademark rights of Latvian pharmaceutical company “Kalceks” in Ukraine for “Promedol”
- #Pharmaceuticals
- #Intellectual Property
Result
"Promedol" was ruled by the Supreme Court to be an international non-proprietary name (INN) of a medicinal product and therefore cannot form the basis for a trademark, as it would cause monopolization and unfair competition in the market. An official publication of the invalidation of the Ukrainian manufacturer's certificates for the "Promedol-ZN" and "Promedol" trademarks was ordered by the Court.

Mikhail I. Ilyashev
Attorney at Law, Managing Partner, Honored Lawyer of Ukraine, Head of Corporate and M&A Practice
Legal support for ESTDEV international technical assistance projects in Ukraine
- #Non-Profit Organizations
- #Tax Law
Result
Within the donor-funded infrastructure projects of the Estonian Centre for International Development (ESTDEV), a regulatory and tax framework for their implementation was developed and the projects were registered as International Technical Assistance projects. Application of the ITA regime made it possible to preserve tax incentives, including VAT exemption, and to ensure uninterrupted funding and project execution with a foreign donor.

Oleksandr Y. Fefelov
Attorney at Law, Partner, Head of Antitrust and Competition Practice
First-ever application of definitive anti-dumping duties in Ukraine for circumvention of trade restrictions
- #International Trade
Result
The Interdepartmental Commission on International Trade has, for the first time in Ukraine, imposed definitive anti-dumping duties on imports of goods from Malaysia due to the circumvention of duties previously introduced on products originating from the PRC. The duty rates were set at up to 67.40%. The decision established the precedent for counteracting the circumvention of trade restrictions through a change of the country of origin of goods.

Olena L. Omelchenko
Attorney at Law, Partner, Head of International Trade Practice
Advising Ukrainian Red Cross Society on the legal regulation of the Mobile Health Units Program
- #Medicine & Healthcare
- #Compliance
Result
Development of the legal mechanism of work, step-by-step instructions and accompanying legal documents for implementing the Mobile Health Units Program, including the method of involving medical personnel in the provision of medical assistance; the method of medicines procurement and the scheme of their transfer; patient data collection, storage and processing.

Alla S. Tsymanovska
Attorney at Law

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OUR AWARDS

Our reliability is confirmed

The Legal 500 – EMEA 2026 Tier 1 in Competition for Ukraine
50 Leading Law Firms of Ukraine 2026. Recognition Rating Top-3 in Competition for Ukraine
Ukrainian Law Firms 2025. A Handbook for Foreign Clients Advanced Practiсe in Antitrust and Competition
Market Leaders: Ranking of Law Firms of Ukraine 2025 Top position in Antitrust
Liga Zakon Awards 2020 Law Firm of the Year in Competition
Ukrainian Legal Awards 2018 Law Firm of the Year in Competition