1 . COMPETITION - AGREEMENTS BETWEEN UNDERTAKINGS - EFFECT ON COMPETITION - CONTRACTS FOR THE SALE OF GOODS RESTRICTING THE BUYER ' S FREEDOM TO USE THE GOODS SUPPLIED - EFFECT ON TRADE BETWEEN MEMBER STATES - CRITERIA ( EEC TREATY , ART . 85 ( 1 )) 2 . COMPETITION - AGREEMENTS BETWEEN UNDERTAKINGS - AUTOMATIC NULLITY - CONSEQUENCES FOR PARTS OF THE AGREEMENT NOT CONTRARY TO ARTICLE 85 ( 1 ) - APPRAISAL BY THE NATIONAL COURT - APPLICATION OF NATIONAL LAW ( EEC TREATY , ART . 85 ( 2 ))