Any unit or individual may apply to the Trademark Office for the cancellation of a registered trademark if it becomes the common name of a commodity approved for use or if it is not used for three consecutive years without justifiable reasons. Prepare for trademark defense.

Trademark use evidence (1), trademark use pictures or related materials shall be kept before the trademark is withdrawn for three times;

(2) trademark printing;

(3), production or sale of trademark products;

(4) the transaction documents of the trademark products;

(5) Trademark license contract;

(6) Publicity evidence of trademark products

(7) Other evidential materials that can prove the facts and reasons of the respondent's application for cancellation of the trademark.

(8), trademark use invoices and contracts

At the same time, the notice of defense and the envelope should be properly kept. Within 30 days from the date of receipt of the seal on the envelope, the notice of defense clearly States that it is a trademark use certificate from a specific year to a certain year.

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