Description, claims and drawings  

Regarding the concept of the content of the application, G 3/89 (OJ 1993, 117) and G 11/91 (OJ 1993, 125) laid down that it related to the parts of the European patent application which determined the disclosure of the invention, namely the description, the claims and the drawings.

Amendments can only be made within the limits of what a skilled person would derive from the whole of these documents as filed (G 2/10, OJ 2012, 376).

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