Each Member State shall have the right to intervene in the proceedings.

The disputes referred to in this Article must be dealt with in plenary session.

Article 42

If a State intervenes in a case before the Court as provided for in the preceding Article, the  interpretation contained in the judgment shall be binding upon the State.

Proceedings by third parties

Article 43

Decisions taken by the Commission under Article 63( 2 ) of this Treaty must be notified to the  purchaser and to the undertakings concerned; if the decision concerns all or a large number of  undertakings, publication may be substituted for individual notification.

Appeals may be brought, under Article 36 of this Treaty, by any person on whom a periodic  penalty payment has been imposed under the fourth subparagraph of Article 66( 5 ).

<69>