4.1 Invitation to indicate which independent claim to search 

If the European Patent Office considers that the claims as filed do not comply with Rule 43(2) (see F‑IV, 3.2), it may invite the applicant to indicate, within a period of two months, claims complying with Rule 43(2) on the basis of which the search is to be carried out. Along the lines of Rule 64, the search division has the discretion either to send this invitation or to make a complete search for all claims, raising the objection under Rule 43(2) only in the written opinion.