Write a paraphrase for this paragraph.
At the same time, the exercise of the right to apply for revocation would become impossible or excessively difficult if an applicant were to be required to adduce negative proof, that is to say, to establish that there is no genuine use.
However, the fact that the applicant should have to produce negative evidence, i.e. to show that the trade mark has not been in fact used, would at the very second stage have made it difficult or excessively difficult to exercise the right to seek annulment.