On October 6, 2021, the Grand Chamber of the Court of Justice handed down a landmark judgment concerning the issue of downward liability in antitrust follow-on damages claims.[1] While the parental (or upward) liability doctrine has long been established,[2] for the first time, the Court of Justice shed light on whether subsidiaries can be held liable for their parents’ antitrust infringements in both public and private enforcement contexts. The ruling answered this question affirmatively, so long as the subsidiary and the parent company form part of the same undertaking.



