The Court of Justice of the European Union (CJEU) consists of two separate courts. The European Court of Justice (ECJ) is the supreme court of the European Union for EU law and hears cases from national courts and appeal cases, and The General Court (GC) mainly hears cases from individuals and companies.
Since 1989 EU cases heard at the ECJ are prefixed with C - and those heard at the GC have T - as a prefix.
Where possible refer to the official reports which are cited as ECR. ECJ cases are reported in volume 1 (ECR l -) and GC cases are reported in vol 2 (ECR II -). Cases heard before 1989 have no prefix.
If there is no ECR reference, use the Common Market Law Reports (CMLR).
But if the case has been reported in the Law Reports, The Weekly Law Reports and/or the All England Law Reports (European Cases), use that instead of the CMLR.
Format for a case from ECR:
Case number | case name in italics | [year] | ECR | volume- | first page
Case 240/83 Procureur de la Republique v ADBHU  ECR 531.
Case T - 344/99 Arne Mathisen AS v Council  ECR II-2905.
Case C - 176/03 Commission v Council  ECR I-7879, paras 47- 48.
Format for an unreported ECJ case:
Case number | [year] | OJ series | issue/first page
Case C-527/15 Stichting Brein v Jack Frederik Wullems  OJ C195/02.
Format for a case from the ECR:
Case name | (Case number) | [year] | ECR | volume- | first page
Procureur de la Republique v ADBHU (Case 240/83)  ECR 531
Arne Mathisen AS v Council (Case T-344/99)  ECR II-2905
Commission v Council (Case C-176/03)  ECR I-7879
Case C-527/15 Stichting Brein v Jack Frederik Wullems  OJ