1 . MEASURES ADOPTED BY THE INSTITUTIONS - ECSC INDIVIDUAL DECISIONS ADDRESSED TO AN UNDERTAKING - NOTICE GIVEN AT REGISTERED OFFICE - DUE NOTIFICATION - REQUEST FOR NOTICE TO BE GIVEN AT ANOTHER ADDRESS - IMMATERIAL ( ECSC TREATY , ART . 15 , SECOND PARAGRAPH ) 2 . PROCEDURE - TIME-LIMITS FOR THE BRINGING OF ACTIONS - EXPIRY - UNFORESEEABLE CIRCUMSTANCES OR FORCE MAJEURE - DEFINITION