2.5 Withdrawal of amendments/abandonment of subject matter 

Any subsequent request to withdraw an amendment is itself a request for further amendment; thus, if this subsequent request occurs after reply to the first communication from the examining division, the corresponding amendment will be admitted only if the examining division consents.

In deleting subject-matter from an application, the applicant should avoid any statement which could be interpreted as abandonment of that subject-matter. Otherwise the subject-matter cannot be reinstated (see J 15/85, confirmed in G 1/05 and G 1/06).