In the case referred to in
Rule 70, paragraph 2, or if a supplementary European search report is drawn up on a Euro-PCT application, the European Patent Office shall give the applicant the opportunity to comment on the extended European search report and, where appropriate, invite him to correct any deficiencies noted in the opinion accompanying the European search report and to amend the description, claims and drawings within the period specified for indicating whether he wishes to proceed further with the application.