Notification is to be by post, by delivery on the premises of the EPO, by public notice or by such technical means of communication as determined by the President of the EPO and under the conditions laid down by him governing their use. Further details concerning notifications are given in Rules 126 to 129. Notification through the central industrial property office of a Contracting State competent to deal with the addressee must be made in accordance with the provisions applicable to that office in national proceedings.