2. Admissible evidence
Art. 117(1) EPC does not contain an exhaustive list of admissible evidence, only mere examples. Parties to the proceedings are thus free in their choice of evidence. Any kind of evidence is admissible during proceedings before the EPO (T 482/89, OJ 1992, 646).
The EPC does not provide that certain questions of fact may only be proved by certain forms of evidence. Questions of fact must be settled on the basis of any credible information available (see e.g. J 11/88, OJ 1989, 433).