Leonardo Business Center,

17/52 Bohdana Khmelnytskoho Street,

Kyiv, 01030, Ukraine

Tel.: +380 44 391 2021



CLACIS is a boutique law firm, founded in 2015 by Mrs. Antonina Yaholnyk, a law expert with more than 20 years of legal practice, and more than 15 years of experience handling antitrust and regulatory matters. CLACIS focuses on competition law and regulatory matters in Ukraine and the region and due to its specialization and regional coverage is a unique law firm.

CLACIS services include all aspects of competition law (investigations, audits, infringement cases, preparation of defense files, leniency, merger control approvals, competition law legal due diligence, antitrust litigation, distribution and contract related antitrust issues, public procurement, conducting trainings for clients (marketing, sales experts, lawyers, managers) on competition) and regulatory.

Both founding partner Antonina Yaholnyk and CLACIS have been for many consecutive years highly recognized (Band 1, Band 2) by international and local legal directories such as Chambers Europe, Legal 500 EMEA, Best Lawyers, ULF. Antonina Yaholnyk is also an author and co-author of numerous publications and books on competition and trade law, which are recommended as manual for students by the Ministry of Education of Ukraine.

The client portfolio includes well-known global corporations like PepsiCo, British American Tobacco, MasterCard, COSCO, Glencore and other. In addition to professional skills the CLACIS team plays a very active role in the community and social activities, in particular, is actively involved in pro-bono work.

Languages: English, German, Polish, Russian, Ukrainian


Clacis is an established practice in