if the trademark registration certificate is lost or damaged, the trademark registrant shall apply to the trademark office for a replacement of the trademark registration certificate, and apply for a replacement in time. If the Trademark Registration Certificate is lost, if the application for a replacement certificate is complete and meets the requirements, after examination and approval, the Trademark Office will publish a statement of loss in the Trademark Announcement and issue a Notice of Obtaining a Trademark Registration Certificate; If the Trademark Registration Certificate is damaged, the applicant shall return the Trademark Registration Certificate to the Trademark Office when submitting the application for replacement. If the application for replacement certificate is complete and meets the requirements, the Trademark Office will issue the Notice of Receiving the Trademark Registration Certificate after examination and approval.

if it's not damaged, just do some minor repairs yourself. The trademark certificate should be properly kept and used for a long time.