4.1 Invitation to indicate which independent claim to search 

If the search division 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 compliant claims on which the search can be based within two months. In the same way as for an invitation under Rule 64, it is left to the search division's discretion whether to send this invitation or instead carry out a full search on all the claims and raise the objection under Rule 43(2) only in the written opinion.