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In proceedings before the European Patent Office, any notification to be made shall take the form of the original document, a copy thereof certified by or bearing the seal of the European Patent Office, or a computer print‑out bearing such seal. Copies of documents emanating from the parties themselves shall not require such certification.
by post in accordance with Rule 126;
by technical means of communication in accordance with Rule 127;
by delivery on the premises of the European Patent Office in accordance with Rule 128; or
by public notice in accordance with Rule 129.
Where a document has reached the addressee, if the European Patent Office is unable to prove that it has been duly notified, or if provisions relating to its notification have not been observed, the document shall be deemed to have been notified on the date established by the European Patent Office as the date of receipt.