In a judgment handed down this week by its Grand Chamber, the European Court of Justice (“ECJ”) decided that, under certain circumstances, a subsidiary can be held liable for cartel activity engaged by its parent company. This judgment has potentially far-reaching consequences and may give an additional impetus to private damages litigation. Background On 24 October 2019, Sumal (an alleged victim of the Trucks cartel) brought a claim for damages in follow-on litigation in front of…