According to the Trademark Law of People's Republic of China (PRC) and its implementing rules, the relevant provisions are as follows: 1. If the application for trademark reexamination is sent and received by post, the reexamination period shall be 15 days, and the postmark date of the letter received and sent by the local post office shall be the date of receipt and delivery of the party concerned; If the postmark is unclear or there is no postmark, the date indicated by the Trademark Office of the State Administration for Industry and Commerce shall be postponed for 20 days as the date of receipt by the party concerned, or the date of receipt of the application for trademark review by the Trademark Review and Adjudication Board of the State Administration for Industry and Commerce shall be the date of issuance by the party concerned. When a party or trademark agency submits a trademark reexamination document, it shall provide an envelope mailed by the Trademark Office to calculate the date when the party receives the notice of rejection from the Trademark Office. 2. The time limit for reexamination of an application for an internationally registered trademark shall be counted from the date when the International Bureau issues the notice of rejection. If the date of publication of the International Bureau cannot be provided, it shall be counted from the date indicated in the notice of trademark rejection sent by the Trademark Office to the International Bureau. 3, the parties to apply for trademark review, shall be handled within the time limit prescribed by law. Due to force majeure or other legitimate reasons, you can apply for an extension 30 days before the expiration. However, the expenses for extension shall be paid by the applicant. The application for extension shall be submitted within 15 days from the date of receiving the notice of rejection from the trademark office, and the extension time shall be counted from 16 days. It is worth noting that the trademark rejection review must be carried out within the statutory time limit. Therefore, users who are not familiar with related businesses can go to the information professional intellectual property company first.