It has become accepted in existing practice that the principal instrument for the control of concentrations with a Community dimension is the mechanism provided for in Regulation 2004/139/EC. Its essence is the EC's prior control of concentrations assessed from the perspective of a significant impediment of effective competition in the common market or a substantial part of it. In contrast, concentrations which did not exceed the quantitative thresholds stipulated under EU or national law generally remained outside the control system. However, a certain change of approach in this respect has been introduced in the judgment of the Court of Justice of the European Union in case C-449/21 Towercast (ECLI:EU:C:2023:207). It confirms the NCAs' capacity to apply Article 102 TFEU when assessing concentrations that lack a 'community' or even 'national' character under ex post control. However, this issue may raise certain doubts, as past practice has indicated that the provisions on the prohibition of abuse of a dominant position for the assessment of a given concentration were applied incidentally and concerned a different legal context. Accordingly, the objective of this paper is to clarify the mutual relations between the provisions arising from the Regulation and the TFEU, including, in particular, their legal nature, functions, objectives and effects.
Keywords: ex ante and ex post merger control; abuse of a dominant position; community and national concentrations; quantitative thresholds; direct applicability of Article 102 TFEU (kontrola koncentracji ex ante i ex post; nadużywanie pozycji dominującej; koncentracje wspólnotowe i krajowe; progi ilościowe; bezpośrednie stosowanie artykułu 102 TFUE)