The Member States and the institutions of the Union shall be represented before the Court of Justice by an agent appointed for each case; the agent may be assisted by an adviser or by a lawyer.
The States, other than the Member States, which are parties to the Agreement on the European Economic Area and also the EFTA Surveillance Authority referred to in that Agreement shall be represented in same manner.
Other parties must be represented by a lawyer.
Only a lawyer authorised to practise before a court of a Member State or of another State which is a party to the Agreement on the European Economic Area may represent or assist a party before the Court.