The Implementing Regulations shall specify:
(a) the manner of computation of time limits and the conditions under which such time limits may be extended, either because the European Patent Office or the authorities referred to in Article 75, paragraph 1(b), are not open to receive documents or because mail is not delivered in the localities in which the European Patent Office or such authorities are situated or because postal services are generally interrupted or subsequently dislocated;
(b) the minima and maxima for time limits to be determined by the European Patent Office.
