European Patent Convention
Rule 25
Certificate of exhibition

Within four months of filing the European patent application, the applicant shall file the certificate referred to in Article 55, paragraph 2, which:

(a)is issued at the exhibition by the authority responsible for the protection of industrial property at that exhibition;

(b)states that the invention was in fact displayed there;

(c)states the opening date of the exhibition and, where the invention was disclosed later than on that date, the date on which the invention was first disclosed; and

(d)is accompanied by an identification of the invention, duly authenticated by the above-mentioned authority.

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