In T 608/08 the board of appeal agreed in principle with the appellant (opponent) that when the patent proprietor submits new claims an opponent must be afforded an opportunity to familiarise itself with the new situation, which must at least involve a - where necessary, sufficiently long - interruption of the oral proceedings. However, that applies only to requests incorporating new content. In the case at issue, the auxiliary request consisted of a combination of features from sub-claims belonging to the main request and the technical features of the sub-claims were technically straightforward and did not put the technical subject-matter of the main request in a new and more complex technical context. Consequently, the admission of the auxiliary request did not entail a surprisingly new procedural situation requiring the opposition division to interrupt the oral proceedings (in contrast to T 783/89, see above, in which, among other things, a completely reformulated text of the claim introduced a new feature).
In T 484/89 the board held that the opposition division was empowered under Art. 114(1) EPC 1973 to take account of and refer to all relevant documents cited. In the case in question the opposition division had considered it necessary to refer to the document during the oral proceedings. In such cases the parties should, at their request, be granted an adjournment or else new oral proceedings should be appointed to give them the opportunity to comment. Since no such request was made, according to the decision or the record of the oral proceedings, no breach of Art. 113(1) EPC 1973 had taken place.
In T 376/98 the examining division had referred to document D4 for the first time during the oral proceedings, and had stayed the oral proceedings to give the applicant time for consideration. When the oral proceedings were resumed, the appellant requested a decision based on the documents on file. Regarding the introduction of D4 at the oral proceedings, the board noted that no procedural limitations were placed upon the examining division to cite relevant documents during any stage of the examination procedure, as long as the applicant was given a fair chance to comment on the objections raised before a final decision was taken (see T 1198/97). In the board's opinion, the appellant's request for a decision could only be taken to mean that the appellant was not interested in a further debate about the relevance of D4.
In T 566/91 the opposition division, albeit inadvertently, based its decision to revoke the patent on a version of a citation which was more complete than the version which both parties present at the oral proceedings before the board had had in their possession. In order to comply with Art. 113 EPC 1973 in the proceedings before the board, the board offered the parties a half-hour suspension of the oral proceedings to enable them to study the fuller version of the document with the help of the interpreters.