At the request of the applicant, the EPO may review whether a refusal by the receiving Office to accord a filing date, or a declaration on the part of the receiving Office that a Euro-PCT application or the designation of a state is considered withdrawn, or a finding by the IB under
Article 12(3) PCT is the result of an error or omission on the part of the authority concerned, in which case the Euro-PCT application can proceed as a European application.