Wednesday, May 24, 2017 T 540/13 - Impossible to establish whether facts or arguments were filed or not

The opposition division had informed opponent O1 that "The notice of opposition contains no statement of grounds on which the opposition is based (Rule 76(2)(c) EPC)" and that "the notice of opposition will be rejected by the opposition division as inadmissible...". The opposition division issued a decision revoking the European patent as the ground for opposition pursuant to Article 100(c) EPC prejudiced the maintenance of the patent as granted. In addition to revoking the patent, the title page of the decision states: "Additional decision: The opposition of the opponent(s) O1 is rejected as inadmissible". Appeals were filed by the patent proprietor and opponent O1.  In its statement of grounds of appeal, appellant-opponent O1 requested that "the decision of the Opposition Division that rejected Opponent O1's opposition on grounds of inadmissibility pursuant to Rule 77 EPC be set aside and that Opponent O1's opposition be considered admissible". The Opponent argued that the facts and arguments in support of the grounds for opposition required by Rule 76 EPC were included in the DHL package that was timely filed within the opposition period, whereas the opposition division held that "Facts and arguments substantiating the indicated grounds for opposition have not been filed within the opposition period. Even the paper confirmation received on 4 October 2007 ... did not comprise facts and arguments, as has been confirmed by file inspection". How did the Board deal with these opposite positions of Opponent O1 and the opposiion division? And how did this effect the party status of the Opponent?