On 22 July 2025, Eurojust published the first comprehensive overview of the CJEU's case-law concerning the application of Directive 2014/41/EU of 3 April 2014 regarding the European Investigation Order in criminal matters (EIO Directive). The overview contains two parts:

• A chronological list of the judgments and pending cases;
• A systematic summary of the Court's judgments grouped under key topics following the structure of the EIO Directive.

The publication is designed to assist legal practitioners and judicial authorities involved in cross-border criminal investigations and aims to enhance the consistent application of the EIO.

The EIO Directive simplifies the execution of cross-border investigative measures, such as hearing witnesses, obtaining information or evidence already in the possession of the executing authority, and – under specific conditions – interception of telecommunications (→eucrim 1/2014, 14-15). However, its legal provisions raised several complex legal questions, some of which have been clarified through CJEU judgments.