European Patent Convention (EPC 1973)

Rule 84 Duration of time limits

Art. 120 R. 71a

Where the Convention or these Implementing Regulations specify a period to be determined by the European Patent Office, such period shall be not less than two months nor more than four months; in certain special circumstances it may be up to six months. In certain special cases, the period may be extended upon request, presented before the expiry of such period.