If the language chosen, in accordance with paragraph 5, for the notice o
f opposition or the application for revocation or invalidity is neither the language of the
application for a trade mark nor the second language indicated when the
application was filed, the opposing party o
r the party seeking revocation or invalidity shall be required to produce, at his own expense, a translation of his
application either into the language of the
application ...[+++] for a trade mark, provided that it is a language of the Office, or into the second language indicated when the application was filed.