Article 37 of the Trademark Law: The validity period of a registered trademark is ten years. Calculated from the date of registration approval. Article 38 of the Trademark Law stipulates that if a registered trademark has expired and needs to be continued to be used, it should not apply for renewal of registration six months before expiration; if it fails to apply for commission again during the period, a six-month extension period can be given. If the extension period has expired but the application has not yet been approved. Cancel its registered trademark. Each renewal is valid for ten years and will be announced after the renewal registration is approved.