44If the opponent does not present the evidence and documents in support of the opposition and a translation of them into the language of the opposition proceedings before the expiry of the period initially laid down for that purpose by the Office or before the expiry of any extension of that period under Rule 71(1) of the implementing regulation, the Office may lawfully reject the opposition as unfounded unless, in accordance with Rule 20(3) of the implementing regulation, it can give a ruling on it on the basis of the evidence which it may already have before it. The rejection of the opposition in such a case is not merely the result of the opponent's failure to comply with the period laid down by the Office but is also the consequence of his failure to comply with a substantive condition of opposition, since the opponent, by failing to present, within the period laid down, the relevant evidence and supporting documents — which must also be presented for the reasons set out in paragraph 42 above — fails to prove the existence of the facts or the rights on which his opposition is based.
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