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Provided by Mikhail Ilyashev
Mikhail Ilyashev is the Managing Partner of Ilyashev & Partners and a leading Ukrainian attorney recognised for his expertise in complex commercial, corporate and shareholder disputes, as well as strategic legal support of businesses in high-stakes situations.
Mikhail focuses on corporate and commercial litigation, shareholder conflicts, business protection, restructuring-related disputes and strategic advisory in matters involving regulatory risks and corporate governance challenges.
He also acts as an independent expert on Ukrainian law in international arbitrations and foreign court proceedings.
Mikhail Ilyashev is one of the founding partners of Ilyashev & Partners. With over 25 years' legal practice, he is widely recognised as one of Ukraine’s most experienced litigators in complex commercial and corporate disputes.
Mikhail Ilyashev regularly represents Ukrainian and international companies, investors and business owners before Ukrainian courts and in international arbitration. His work includes precedent-setting corporate conflicts, disputes involving major industrial and infrastructure projects, and litigation concerning strategic sectors of the economy.
Mikhail is frequently engaged as an expert on Ukrainian law in international arbitration proceedings and foreign court litigation involving multinational corporations and financial institutions.
He also serves as Chairman of the Sports Arbitration Court at the National Olympic Committee of Ukraine.
• Kyiv City Bar Council;
• National Olympic Committee of Ukraine;
• President of the Ukrainian Fencing Federation;
• Legal Commission of the European Fencing Confederation;
• Honorary Consul of the Republic of Chile in Kyiv.
Author of more than 100 publications, top speaker at many leading conferences and discussion events in Ukraine.
Mikhail Ilyashev has been consistently ranked by Chambers Europe for Dispute Resolution in Ukraine for 18 years. Inducted into The Legal 500 Hall of Fame among the leading lawyers in Dispute Resolution, Commercial, Corporate and M&A in Ukraine.
Awarded as an Honored Lawyer of Ukraine by the Decree of the President of Ukraine No. 1072/2009 for a significant personal contribution to the development of the rule of law, ensuring the protection of constitutional rights and freedoms of citizens, high professionalism.
Advises leading Ukrainian and international companies, investors, business owners and senior executives on corporate governance, shareholder relations, M&A disputes, restructuring and strategic business protection.
Extensive experience in disputes and advisory projects in the energy and infrastructure sectors, including public-private partnerships and concession projects.
Advises on complex corporate governance matters, cross-border investments, and business restructuring in regulated and strategic industries.
Also active in sports law, including disputes before sports arbitration bodies, contractual matters in professional sports and corporate governance of sports clubs and federations.
• Ukraine – court litigation and corporate disputes.
• International arbitration (LCIA, ICC, SCC and other leading institutions).
• Expert opinions on Ukrainian law in international arbitration and foreign court proceedings.
English, Ukrainian, Russian
Over 25 years of experience representing clients in:
• High-value corporate and shareholder disputes;
• Complex commercial litigation before Ukrainian courts;
• Investment and cross-border disputes;
• Corporate restructuring and governance conflicts;
• Business protection and crisis management;
• Acting as an expert on Ukrainian law in international arbitration and foreign court proceedings.
Institute of International Relations, Taras Shevchenko National University of Kyiv, International Law Faculty
Master of International Law
1993 - 1998
Provided by Chambers
Provided by Chambers
Mikhail Ilyashev is one of the few people who can distil very complex issues into manageable decisions.
The opinion he provides to me regarding business matters is something I really value.
Mikhail Ilyashev is one of the few people who can distil very complex issues into manageable decisions.
The opinion he provides to me regarding business matters is something I really value.
42 items provided by Ilyashev & Partners
Ilyashev & Partners Leads Copyright Transfer for Miroslav Šašek Editions in Ukraine
Ilyashev & Partners led legal work on one of the largest non-commercial copyright transfers in publishing, bringing Miroslav Šašek’s classic “This Is…” series to Ukrainian readers.
Ilyashev & Partners Named Among Top 5 Law Firms in CEE for Client Satisfaction
Ilyashev & Partners has been shortlisted among the top five law firms in Central and Eastern Europe for client service excellence in the Legal 500 CEE Awards 2025, being the only law firm from Ukraine on the list.
Ilyashev & Partners Wins "Promedol" Trademark Case at Supreme Court
Ilyashev & Partners successfully represented Latvian pharmaceutical company Kalceks AS in a high-profile dispute concerning the invalidation of Ukrainian trademark certificates for the anesthetic trademarks “Promedol” and “Промедол” registered by Pharmaceutical Group Zdorovia LLC.
Ilyashev & Partners Names Kostiantyn Kryvenko Head of Criminal Law Practice
Kostiantyn Kryvenko, Attorney at Law, Counsel at Ilyashev & Partners Law Firm, has been promoted to Head of Criminal Law Practice.
Mikhail Ilyashev Presents Key Reforms of the Sports Arbitration Court at the NOC of Ukraine
Mikhail Ilyashev Presents Sports Arbitration Court at the National Olympic Committee of Ukraine.
50 Leading Law Firms of Ukraine 2025: Ilyashev & Partners Ranked Second
Ilyashev & Partners Law Firm was ranked second out of 50 Leading Law Firms of Ukraine 2025, an annual ranking of Ukrainian law firms. A report of the national research program results was published by Yurydychna Praktyka Publishing House on 4 December 2024.
Ukrainian Medical Center Terminated Illegal Use of the Red Cross Emblem
Ilyashev & Partners Law Firm successfully represented the Ukrainian Red Cross Society in an action to terminate violations relating to Medicenter Ukraine LLC's illegal use of the Red Cross emblem.
Ilyashev & Partners Ends Illegal Use of the Red Cross Emblem by Ukraine’s Largest Pharmacy Chain
The Ukrainian Red Cross Society was successfully represented by Ilyashev & Partners Law Firm in a dispute involving termination of violations relating to the illegal use of the Red Cross emblem in business activities of Med-Service Dnepr LLC, Ukraine’s largest pharmacy chain.
Ilyashev & Partners Invalidates Ukrainian Trademark Certificates "Promedol"
Ilyashev & Partners succeeded in defending a well-known Latvian pharmaceutical manufacturer Kalceks, AS in a dispute on invalidation of trademark certificates for “Промедол” and “Promedol” trademarks of Ukrainian pharmaceutical company.
Ilyashev & Partners Advises Charity Lab Foundation
Ilyashev & Partners Law Firm advises the Charity Lab Foundation on national and international issues of conducting activities and development.
Ukraine's 50 Leading Law Firms 2024: Ilyashev & Partners Ranked Second
Ilyashev & Partners Law Firm is ranked second out of 50 Leading Law Firms of Ukraine 2024, an annual ranking of Ukrainian law firms. The results of the annual research program were published by Yurydychna Praktyka Publishing House on 14 December 2023.
Yurydychna Gazeta Names Ilyashev & Partners Among the Market Leaders in 16 Practice Areas
The annual independent survey Market Leaders: Ranking of Law Firms of Ukraine 2023 ranked Ilyashev & Partners in the firm's key practice areas and industries in the Ukrainian legal market.
The Fencing Federation of Ukraine Requests Suspension of the FIE Decision at the Swiss Court
The Fencing Federation of Ukraine requests from the court to restrict any actions of the FIE and its bodies aimed at fulfilling the decision of the FIE Extraordinary Congress.
Ilyashev & Partners Protects Ferrexpo's Ownership in Ferrexpo Poltava Mining in the Supreme Court
The Grand Chamber of the Supreme Court issued its final decision in favor of Ferrexpo AG in the case on recognition of the share purchase agreement of 40.19% stake in Ferrexpo Poltava Mining invalid and its transfer to four companies – former shareholders of the enterprise.
Ilyashev & Partners and Taras Shevchenko National University of Kyiv Sign a Memorandum
Ilyashev & Partners Law Firm and Taras Shevchenko National University of Kyiv are intensifying their educational cooperation.
Ilyashev & Partners Represents the Fencing Federation of Ukraine in the Court of Arbitration for Spo
Ilyashev & Partners Law Firm is providing legal support of the Ukrainian Fencing Federation on a pro bono basis.
Chambers Europe 2023 Recommends Ilyashev & Partners as a Leading Law Firm in Ukraine
Ilyashev & Partners Law Firm is recommended by the authoritative international survey Chambers Europe 2023 in Dispute Resolution, Competition/Antitrust, Employment, and Intellectual Property practices. Survey results were released on 16 March 2023.
Chambers Global 2023 Recommends Ilyashev & Partners in Dispute Resolution for Ukraine
Ilyashev & Partners Law Firm is recommended by the international legal directory Chambers Global 2023 in Dispute Resolution for Ukraine.
Mikhail Ilyashev Appointed as Honorary Consul of Chile in Kyiv
Mikhail Ilyashev, Managing Partner of Ilyashev & Partners Law Firm has been appointed as Honorary Consul of the Republic of Chile in Kyiv by the President of the Republic of Chile.
Ilyashev & Partners Appoints Six Counsels
Ilyashev & Partners Law Firm appointed attorneys Oleksandr Denysenko, Sergey Nedelko, Denys Nienov, Roman Protsyshyn, Marina Riashchenko and Vyacheslav Sytyi, as the firm’s Counsels.
Ilyashev & Partners Ensure Lifting the Unlawful Financial Burden Imposed on Green Energy Companies
Ilyashev & Partners managed to protect the rights of all alternative electricity producers in recognizing as unlawful the decision of the National Commission for State Regulation in the Spheres of Energy and Utilities.
Ilyashev & Partners Аdvised on the Sale of 70% in Zavalivskiy Graphite Group
Ilyashev & Partners Law Firm has supervised the transaction on sale of 70% stake in the Ukrainian group of companies Zavalivskiy Graphite, one of the ten world’s largest producers of natural graphite. The stake was acquired by the Australian company Volt Resources Limited.
Ilyashev & Partners Secured the Enforcement of the UK Court Award in Ukraine
Ilyashev & Partners has secured the enforcement in Ukraine of the Award of the Commercial Court of the Queen’s Bench Division of the High Court of Justice for the recovery of debt from European Insurance Alliance (Ukraine) in favor of the United Kingdom General Branch of the Reinsurance Company.
Ilyashev & Partners Defended the Red Cross Trade Mark in a Dispute with Pharmacy Network in Ukraine
Ilyashev & Partners Law Firm, which represents interests of the Ukrainian Red Cross Society, secured holding the trade mark of one of the largest pharmacy networks invalid.
Ilyashev & Partners’ Attorneys Were Awarded the Highest Award of the Ukrainian Red Cross
The Managing Partner of Ilyashev & Partners Law Firm, Mikhail Ilyashev, and the Attorney Dmytro Nikulesko were awarded the Red Cross Badge of Honour, the highest award of the Ukrainian Red Cross Society.
Chambers Global 2021: Ilyashev & Partners — No. 1 for Domestic Dispute Resolution in Ukraine
Ilyashev & Partners Law Firm headed the Chambers Global 2021 rating in the field of Dispute Resolution: Domestic – Ukraine, becoming the only Band 1 firm in this practice.
Ilyashev & Partners Is a Legal Counsel of the MFA of Ukraine in Acquisition of Ukraine.ua Domain
The team of Ilyashev & Partners provided legal support and counseling during the Ukraine.ua domain name re-delegation in favor of the Ministry of Foreign Affairs of Ukraine to host a modern digital portal about Ukraine for foreign audiences. The portal was officially launched on 14 January 2021.
Ilyashev & Partners Among Top-3 Ukrainian Law Firms
Ilyashev & Partners Law Firm has been ranked third in 50 Leading Law Firms of Ukraine 2020, a Ukrainian nationwide law firm ranking.
Ilyashev & Partners Secured the Lifting of the Arrest Imposed on 50.3% of Shares of Poltava Mining
Ilyashev & Partners Law Firm has successfully challenged the arrest of 50.3% of shares of Ferrexpo Poltava Mining (PrJSC Poltava Mining), owned by Ferrexpo AG Switzerland.
Ilyashev & Partners Put an End to the Illegal Use of the Red Cross Emblem in Ukraine
lyashev & Partners Law Firm has successfully defended the interests of the Ukrainian Red Cross Society in the case on termination of violations associated with the illegal use of the Red Cross emblem in business activities of a large network of medical centers in Ukraine.
Ilyashev & Partners Leads Copyright Transfer for Miroslav Šašek Editions in Ukraine
Ilyashev & Partners led legal work on one of the largest non-commercial copyright transfers in publishing, bringing Miroslav Šašek’s classic “This Is…” series to Ukrainian readers.
Ilyashev & Partners Named Among Top 5 Law Firms in CEE for Client Satisfaction
Ilyashev & Partners has been shortlisted among the top five law firms in Central and Eastern Europe for client service excellence in the Legal 500 CEE Awards 2025, being the only law firm from Ukraine on the list.
Ilyashev & Partners Wins "Promedol" Trademark Case at Supreme Court
Ilyashev & Partners successfully represented Latvian pharmaceutical company Kalceks AS in a high-profile dispute concerning the invalidation of Ukrainian trademark certificates for the anesthetic trademarks “Promedol” and “Промедол” registered by Pharmaceutical Group Zdorovia LLC.
Ilyashev & Partners Names Kostiantyn Kryvenko Head of Criminal Law Practice
Kostiantyn Kryvenko, Attorney at Law, Counsel at Ilyashev & Partners Law Firm, has been promoted to Head of Criminal Law Practice.
Mikhail Ilyashev Presents Key Reforms of the Sports Arbitration Court at the NOC of Ukraine
Mikhail Ilyashev Presents Sports Arbitration Court at the National Olympic Committee of Ukraine.
50 Leading Law Firms of Ukraine 2025: Ilyashev & Partners Ranked Second
Ilyashev & Partners Law Firm was ranked second out of 50 Leading Law Firms of Ukraine 2025, an annual ranking of Ukrainian law firms. A report of the national research program results was published by Yurydychna Praktyka Publishing House on 4 December 2024.
Ukrainian Medical Center Terminated Illegal Use of the Red Cross Emblem
Ilyashev & Partners Law Firm successfully represented the Ukrainian Red Cross Society in an action to terminate violations relating to Medicenter Ukraine LLC's illegal use of the Red Cross emblem.
Ilyashev & Partners Ends Illegal Use of the Red Cross Emblem by Ukraine’s Largest Pharmacy Chain
The Ukrainian Red Cross Society was successfully represented by Ilyashev & Partners Law Firm in a dispute involving termination of violations relating to the illegal use of the Red Cross emblem in business activities of Med-Service Dnepr LLC, Ukraine’s largest pharmacy chain.
Ilyashev & Partners Invalidates Ukrainian Trademark Certificates "Promedol"
Ilyashev & Partners succeeded in defending a well-known Latvian pharmaceutical manufacturer Kalceks, AS in a dispute on invalidation of trademark certificates for “Промедол” and “Promedol” trademarks of Ukrainian pharmaceutical company.
Ilyashev & Partners Advises Charity Lab Foundation
Ilyashev & Partners Law Firm advises the Charity Lab Foundation on national and international issues of conducting activities and development.
Ukraine's 50 Leading Law Firms 2024: Ilyashev & Partners Ranked Second
Ilyashev & Partners Law Firm is ranked second out of 50 Leading Law Firms of Ukraine 2024, an annual ranking of Ukrainian law firms. The results of the annual research program were published by Yurydychna Praktyka Publishing House on 14 December 2023.
Yurydychna Gazeta Names Ilyashev & Partners Among the Market Leaders in 16 Practice Areas
The annual independent survey Market Leaders: Ranking of Law Firms of Ukraine 2023 ranked Ilyashev & Partners in the firm's key practice areas and industries in the Ukrainian legal market.
The Fencing Federation of Ukraine Requests Suspension of the FIE Decision at the Swiss Court
The Fencing Federation of Ukraine requests from the court to restrict any actions of the FIE and its bodies aimed at fulfilling the decision of the FIE Extraordinary Congress.
Ilyashev & Partners Protects Ferrexpo's Ownership in Ferrexpo Poltava Mining in the Supreme Court
The Grand Chamber of the Supreme Court issued its final decision in favor of Ferrexpo AG in the case on recognition of the share purchase agreement of 40.19% stake in Ferrexpo Poltava Mining invalid and its transfer to four companies – former shareholders of the enterprise.
Ilyashev & Partners and Taras Shevchenko National University of Kyiv Sign a Memorandum
Ilyashev & Partners Law Firm and Taras Shevchenko National University of Kyiv are intensifying their educational cooperation.
Ilyashev & Partners Represents the Fencing Federation of Ukraine in the Court of Arbitration for Spo
Ilyashev & Partners Law Firm is providing legal support of the Ukrainian Fencing Federation on a pro bono basis.
Chambers Europe 2023 Recommends Ilyashev & Partners as a Leading Law Firm in Ukraine
Ilyashev & Partners Law Firm is recommended by the authoritative international survey Chambers Europe 2023 in Dispute Resolution, Competition/Antitrust, Employment, and Intellectual Property practices. Survey results were released on 16 March 2023.
Chambers Global 2023 Recommends Ilyashev & Partners in Dispute Resolution for Ukraine
Ilyashev & Partners Law Firm is recommended by the international legal directory Chambers Global 2023 in Dispute Resolution for Ukraine.
Mikhail Ilyashev Appointed as Honorary Consul of Chile in Kyiv
Mikhail Ilyashev, Managing Partner of Ilyashev & Partners Law Firm has been appointed as Honorary Consul of the Republic of Chile in Kyiv by the President of the Republic of Chile.
Ilyashev & Partners Appoints Six Counsels
Ilyashev & Partners Law Firm appointed attorneys Oleksandr Denysenko, Sergey Nedelko, Denys Nienov, Roman Protsyshyn, Marina Riashchenko and Vyacheslav Sytyi, as the firm’s Counsels.
Ilyashev & Partners Ensure Lifting the Unlawful Financial Burden Imposed on Green Energy Companies
Ilyashev & Partners managed to protect the rights of all alternative electricity producers in recognizing as unlawful the decision of the National Commission for State Regulation in the Spheres of Energy and Utilities.
Ilyashev & Partners Аdvised on the Sale of 70% in Zavalivskiy Graphite Group
Ilyashev & Partners Law Firm has supervised the transaction on sale of 70% stake in the Ukrainian group of companies Zavalivskiy Graphite, one of the ten world’s largest producers of natural graphite. The stake was acquired by the Australian company Volt Resources Limited.
Ilyashev & Partners Secured the Enforcement of the UK Court Award in Ukraine
Ilyashev & Partners has secured the enforcement in Ukraine of the Award of the Commercial Court of the Queen’s Bench Division of the High Court of Justice for the recovery of debt from European Insurance Alliance (Ukraine) in favor of the United Kingdom General Branch of the Reinsurance Company.
Ilyashev & Partners Defended the Red Cross Trade Mark in a Dispute with Pharmacy Network in Ukraine
Ilyashev & Partners Law Firm, which represents interests of the Ukrainian Red Cross Society, secured holding the trade mark of one of the largest pharmacy networks invalid.
Ilyashev & Partners’ Attorneys Were Awarded the Highest Award of the Ukrainian Red Cross
The Managing Partner of Ilyashev & Partners Law Firm, Mikhail Ilyashev, and the Attorney Dmytro Nikulesko were awarded the Red Cross Badge of Honour, the highest award of the Ukrainian Red Cross Society.
Chambers Global 2021: Ilyashev & Partners — No. 1 for Domestic Dispute Resolution in Ukraine
Ilyashev & Partners Law Firm headed the Chambers Global 2021 rating in the field of Dispute Resolution: Domestic – Ukraine, becoming the only Band 1 firm in this practice.
Ilyashev & Partners Is a Legal Counsel of the MFA of Ukraine in Acquisition of Ukraine.ua Domain
The team of Ilyashev & Partners provided legal support and counseling during the Ukraine.ua domain name re-delegation in favor of the Ministry of Foreign Affairs of Ukraine to host a modern digital portal about Ukraine for foreign audiences. The portal was officially launched on 14 January 2021.
Ilyashev & Partners Among Top-3 Ukrainian Law Firms
Ilyashev & Partners Law Firm has been ranked third in 50 Leading Law Firms of Ukraine 2020, a Ukrainian nationwide law firm ranking.
Ilyashev & Partners Secured the Lifting of the Arrest Imposed on 50.3% of Shares of Poltava Mining
Ilyashev & Partners Law Firm has successfully challenged the arrest of 50.3% of shares of Ferrexpo Poltava Mining (PrJSC Poltava Mining), owned by Ferrexpo AG Switzerland.
Ilyashev & Partners Put an End to the Illegal Use of the Red Cross Emblem in Ukraine
lyashev & Partners Law Firm has successfully defended the interests of the Ukrainian Red Cross Society in the case on termination of violations associated with the illegal use of the Red Cross emblem in business activities of a large network of medical centers in Ukraine.
Provided by Ilyashev & Partners
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