CLACIS
Europe Guide 2025
About
Firm Details
Managing Partner: Antonina Yaholnyk
Languages: English, German, Polish, Ukrainian
Main Areas of Practice: Competition Law, Regulatory
Firm Overview:
CLACIS is a competition law boutique-firm, founded in 2015 by Mrs. Antonina Yaholnyk, a law expert with 28 years of legal practice, of which over 20 years of handling diverse antitrust and regulatory matters. This year CLACIS celebrates its 10-year anniversary!
CLACIS focuses on matters concerning competition law, regulatory and compliance in Ukraine and abroad. Due to its specialization CLACIS is a unique law firm with main emphasis on competition law investigations and competition law litigation.
The firm represents major international and national market players and handles matters with market significance mostly with international exposure. For many years the firm has been recognized by Chambers, Legal 500, Who’s Who Legal, Best Lawyers, Lexology as well as nationallaw market reviews.
The firm’s services include all aspects of competition law and regulatory matters: investigations, audits, infringement cases, abuse of dominance, preparation of defence files, leniency, merger control approvals, competition law legal due diligence, antitrust litigation, distribution and contract related antitrust issues, public procurement, conducting trainings for clients on competition law practical application aspects (marketing experts, sales experts, lawyers, managers).
CLACIS is actively involved in pro-bono work, inter alia, for state companies and NGOs. CLACIS’ team members (graduates of leading national and foreign universities with professional experience in leading local and international law firms) in addition to their professional skills are taking proactive part in social activities and participate in professional organizations, including volunteer organizations.
Key Clients: ArcelorMittal, British American Tobacco, COSCO, Farmastor, Glencore, InBev, Lifecell, Maersk, MasterCard, PepsiCo, Terex Corp., etc.
Industry Sectors:
- Automobiles & Parts
- Banks
- Chemicals
- Construction & Materials
- Consumer Product Manufacturing
- Energy
- Financial Services
- Food & Drink Producers
- Health Care
- Industrial Engineering
- Media
- Mining & Metals
- Pharmaceuticals & Life Sciences
- Ports & Shipping
- Private Clients / Individuals
- Real Estate
- Retail
- Software & Computer Services
- Technology, Hardware & Electronics
- Telecommunications
- Utilities
Ranked Offices
Provided by CLACIS
- KyivPeremoga Coworking, 15 Yaroslaviv Val St. Office 404, 4th Floor , Kyiv, Kyiv City Municipality, Ukraine, 01034
- Web: www.clacis.com
- Tel: +38 050 387 89 74
- Fax:
CLACIS rankings
Articles, highlights and press releases
10 items provided by CLACIS
Algorithmic alignment of prices: the EU approach towards liability
The article reviews the EU case law and the proposed rules regarding the application of pricing algorithms (computer program, which monitors prices and can be applied by a business entity) and liability for anti-competitive effects resulting from the exchange of information through such software.
Ukrainian Antitrust Authority fines for gun jumping in assets deal despite hold separate agreement
On June 22, 2023 the Antimonopoly Committee of Ukraine (AMC) imposed a fine of UAH 24,903,494 (approximately EUR 600 000) on a German pharmaceutical producer for a failure to get merger control approval for acquisition of assets of another global pharma company.
CLACIS has successfully represented Mastercard before the Antimonopoly Committee of Ukraine
CLACIS has successfully represented Mastercard before the Antimonopoly Committee of Ukraine to obtain the approval for reduction of domestic interchange fee rates in Ukraine
Algorithmic Pricing Collusion: When does Liability Arise?
Antitrust authorities have paid significant attention to the question of liability of business entities using pricing algorithms, especially in cases of potential collusion involving self-learning autonomous algorithms in the absence of evidence of an agreement.
BEPS Plan Implementation in Ukraine: Why a Corporate Restructuring Can Require a Merger Approval
The Law of Ukraine No 466-IX “On amendments to the Tax Code of Ukraine regarding the improvement of tax administration, removal of technical and logical inconsistencies in tax legislation provides for rules aimed at implementation of the BEPS plan and the MLI Convention in Ukraine.
Antitrust Liability for Tacit Algorithmic Price Alignment in the EU and the US
In recent years EU and US antitrust authorities were successful in prosecuting cases of overt collusion facilitated by pricing algorithms. It is recognised that overt collusion is prohibited by competition laws per se and collusion facilitated by such algorithms is treated like concerted action.
Legal Professional Privilege in Competition Law Proceedings
Legal professional privilege is one of the main tools, which ensures confidentiality of attorney-client relationship and helps build an effective defence without disclosure of sensitive information, which can be used as an evidence against an undertaking.
What is a Fair Price from an Antitrust Perspective?
The article focuses on a number of pricing concepts that are used in monopoly abuse cases.
Antitrust Implications of Using Pricing Algorithms
A pricing algorithm - a computer procedure which basing on a set of rules solves certain pricing tasks. Use of pricing algorithms can facilitate or create collusion between entities. The article provides an overview of such issues including explicit and tacit collusion.
Algorithmic alignment of prices: the EU approach towards liability
The article reviews the EU case law and the proposed rules regarding the application of pricing algorithms (computer program, which monitors prices and can be applied by a business entity) and liability for anti-competitive effects resulting from the exchange of information through such software.
Ukrainian Antitrust Authority fines for gun jumping in assets deal despite hold separate agreement
On June 22, 2023 the Antimonopoly Committee of Ukraine (AMC) imposed a fine of UAH 24,903,494 (approximately EUR 600 000) on a German pharmaceutical producer for a failure to get merger control approval for acquisition of assets of another global pharma company.
CLACIS has successfully represented Mastercard before the Antimonopoly Committee of Ukraine
CLACIS has successfully represented Mastercard before the Antimonopoly Committee of Ukraine to obtain the approval for reduction of domestic interchange fee rates in Ukraine
Algorithmic Pricing Collusion: When does Liability Arise?
Antitrust authorities have paid significant attention to the question of liability of business entities using pricing algorithms, especially in cases of potential collusion involving self-learning autonomous algorithms in the absence of evidence of an agreement.
BEPS Plan Implementation in Ukraine: Why a Corporate Restructuring Can Require a Merger Approval
The Law of Ukraine No 466-IX “On amendments to the Tax Code of Ukraine regarding the improvement of tax administration, removal of technical and logical inconsistencies in tax legislation provides for rules aimed at implementation of the BEPS plan and the MLI Convention in Ukraine.
Antitrust Liability for Tacit Algorithmic Price Alignment in the EU and the US
In recent years EU and US antitrust authorities were successful in prosecuting cases of overt collusion facilitated by pricing algorithms. It is recognised that overt collusion is prohibited by competition laws per se and collusion facilitated by such algorithms is treated like concerted action.
Legal Professional Privilege in Competition Law Proceedings
Legal professional privilege is one of the main tools, which ensures confidentiality of attorney-client relationship and helps build an effective defence without disclosure of sensitive information, which can be used as an evidence against an undertaking.
What is a Fair Price from an Antitrust Perspective?
The article focuses on a number of pricing concepts that are used in monopoly abuse cases.
Antitrust Implications of Using Pricing Algorithms
A pricing algorithm - a computer procedure which basing on a set of rules solves certain pricing tasks. Use of pricing algorithms can facilitate or create collusion between entities. The article provides an overview of such issues including explicit and tacit collusion.