Illumina’s Light on Article 22 EUMR: The Suspended Step and Uncertain Future of EU Merger Control Over Below-Threshold “Killer” Mergers

Illumina/Grail marks a “critical juncture” in EU merger control. Breaking with the past, reliance on a centralized and predictable administrative system of ex ante merger control is no longer a given in the EU. The expansive use of the ad hoc Article 22 referral mechanism under the EU Merger Regulation would de facto erode its “brightline” jurisdictional rules and upend the allocation of “exclusive” EU and Member State merger competences based on turnover thresholds: the exception cou