4.1 Invitation to indicate which independent claim to search 

In the same way as for an invitation under Rule 64 (see B‑VII, 2.2), if 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 has the discretion whether to send this invitation or instead either to invite the applicant to indicate, within two months, compliant claims on which the search can be based or to carry out a full search on all the claims and raise the objection under Rule 43(2) only in the written opinion. In the latter case, the claims will have to be amended to comply with the requirement of Rule 43(2) if the objection persists in examination (F‑IV, 3.3).