The various documents of the Trademark Review and Adjudication Board can be delivered to the parties by mail, direct submission, data message or other means; if they are served by data message, the consent of the party must be obtained. If the party entrusts a trademark agency, the documents delivered to the trademark agency shall be deemed to have been served on the party. The date on which the Trademark Review and Adjudication Board serves various documents to the parties. If it is mailed, the postmark date received by the party shall prevail; if the postmark date is unclear or there is no postmark, it shall be deemed served fifteen days from the date the document is issued. Party, unless the party can prove the actual date of receipt; if submitted directly, the date of submission shall prevail. If the document is served by data message, it shall be deemed to have been served on the party concerned fifteen days from the date of issuance of the document; if the document cannot be served by the above methods, it may be served to the party by announcement, and thirty days shall have passed since the date of publication of the announcement. date, the document is deemed to have been served. If the Trademark Review and Adjudication Board sends documents to the party by mail but is returned and then is served by announcement, all subsequent documents will be served by announcement, unless the party clearly informs the mailing address after the announcement is served.