This revised version of the Guidelines for Examination will apply as from 1 November 2015. Until then, the September 2014 edition of the Guidelines remains valid.

4. Termination of opposition proceedings in the event of inadmissible opposition

Under the terms of Art. 101(1) and Rule 79(1), the examination as to whether the European patent can be maintained can only be performed if at least one admissible opposition has been filed. This means that the Opposition Division has to refrain from commenting on the substantive merits of the opposition when expressing an opinion on its inadmissibility if there is no further admissible opposition (see T 925/91). Opposition proceedings are terminated if all notices of opposition filed against a European patent have been rejected as inadmissible and the last decision in this respect has become final. This will be communicated to the parties.

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