The substantive review of trademark cancellation takes about 6-8 months to complete. You can just find someone to represent you, there is no need to go to Beijing. Recommend Zhiguoguo. Zhiguoguo.com was officially launched on May 4, 2014. On May 31, 2015, the number of trademark registrations exceeded 5,000 in a single month, setting a historical record and becoming the number one trademark agency in the industry since its establishment. It took less than a year to grow into the number one trademark in the country in terms of monthly submissions. Currently we are also doing trademark cancellation. Legal basis: Article 35 of the "Regulations on the Implementation of the Trademark Law of the People's Republic of China" If you apply for international registration of a trademark with China as the country of origin, you must have a real and effective business office in China, or have a residence in China, or Have Chinese nationality. Article 36 An applicant who meets the provisions of Article 35 of these Regulations and whose trademark has been registered with the Trademark Office may apply for international registration of the trademark in accordance with the Madrid Agreement. Applicants who comply with the provisions of Article 35 of these Regulations and whose trademarks have been registered with the Trademark Office, or have submitted a trademark registration application to the Trademark Office and been accepted, may apply for international registration of the trademark in accordance with the Madrid Protocol. Article 42 The Trademark Office shall, within the time limit for rejection stipulated in the Madrid Agreement or the Madrid Protocol (hereinafter referred to as the rejection time limit), examine the application for territorial extension designated by China in accordance with the relevant provisions of the Trademark Law and these Regulations, make a decision, and notify the International bureau. If the Trademark Office fails to issue a notice of rejection or partial rejection within the rejection period, the application for territorial extension shall be deemed to be approved. Article 43 If an applicant for territorial extension of China requests to protect a three-dimensional mark, color combination, or sound mark as a trademark, or claims to protect a collective mark or certification mark, 3 Within months, the relevant materials specified in Article 13 of these Regulations shall be submitted to the Trademark Office through the trademark agency established in accordance with the law. If relevant materials are not submitted within the above time limit, the Trademark Office will reject the application for territorial extension. Article 46 The validity period of an internationally registered trademark protected in China starts from the date of international registration or a later designated date. Before the expiration of the validity period, the registrant may apply to the International Bureau for renewal. If the registrant does not apply for renewal within the validity period, a 6-month extension period may be granted. After receiving the renewal notice from the International Bureau, the Trademark Office will conduct an examination in accordance with the law. If the International Bureau notifies that the trademark has not been renewed, the internationally registered trademark will be cancelled.