As pointed out in G 01/93, the inclusion of a limiting but not originally disclosed feature into granted claims may lead to the infamous "inescapable trap" in EPO practice: because of Article 123 (2-3) EPC, the respective feature can neither remain in the claims nor be deleted. The only way out of the trap is to substitute the inadmissible feature for a narrower and originally disclosed one. If no such feature is available, the respective claim is regarded as inadmissible under Article 123(2) EPC.
