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Oleh Marchenko is a partner at MARCHENKO DANEVYCH. He chairs the dispute resolution practice and specialises in public international law, investor-state disputes and ADR.

Oleh is recognised as a top-tier lawyer in dispute resolution in Ukraine by Legal 500 EMEA and as a leading lawyer in Arbitration & Mediation in Ukraine by Best Lawyers.

His past professional experience includes International Trade/ WTO disputes, M&A, and transactional cross-border taxation with top-tier recognitions by Chambers and Partners, Legal 500 EMEA, Who’s Who Legal and International Tax Review.

Recent cases include: acting for a US-based publicly listed global 500 pharmaceutical company in an investment dispute and investor-state negotiations with Ukraine related to violation of IP rights (the dispute was settled in 2017); 
acting for US-French individual investors and their Luxemburg subsidiary in an investment dispute and investor-state negotiations with Ukraine related to arbitrary tax measures and unreasonable trade restrictions; 
advising a publicly listed real estate developer and its shareholders, on strategy, merits and jurisdictional matters of contemplated investment claims related to a denial of justice and indirect expropriation; 
and advising a publicly-listed global 500 pharmaceutical company on strategy, merits and jurisdictional matters of contemplated investor-state claims against Ukraine related to arbitrary and discriminatory regulatory measures.