On November 10, 2022, in a judgment on a request for a preliminary ruling on the interpretation of Article 5(1) of Directive 2014/104 (the “Damages Directive”) and the scope of its rules on evidence production, the Court of Justice confirmed that national courts could require defendants to disclose evidence that did not exist at the time of the court proceedings (“ex novo evidence”)— by compiling or classifying knowledge, information or data in their possession— rather than to merely produce documents that already exist.[1] In this instance, the applicants were seeking price data to quantify the artificial price increase caused by a cartel. The Court of Justice considered that the need to ensure the effective implementation of EU competition law could justify this interpretation, provided that national courts limited disclosure of ex novo evidence to necessary and proportionate requests. This ruling will increase the burden of follow-on litigation on companies and, in particular, the time and costs of carrying out disclosure.







