In T667/08 hatte sich die technische Beschwerdekammer 3.4.01 mit der Frage zu befassen, wann eine Änderung unter A. 123(2) EPÜ zulässig ist.
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It is an undisputed principle in the jurisprudence of the Boards of Appeal of the EPO that an amendment is allowable under Article 123(2) EPC if the subject-matter resulting from the amendment is directly and unambiguously derivable from the original application documents i.e. the description, the claims and the drawings, using common general knowledge. Thereby [highlight]it is not necessary that the subject-matter resulting from the amendment was explicitly disclosed[/highlight] in the original application.
It is therefore essential, when deciding on issues of added subject-matter, to identify the actual teaching conveyed by the original disclosure, i.e. the technical information that the skilled person reading the original disclosure would have derived from its content (description, claims, drawings) considered in its entirety ...