In practice, the applicant applies to the State Trademark Office to cancel the registered trademark based on the fact that it has not been used for three consecutive years. The National Trademark Office will issue a notice to the trademark owner to provide evidence of use. The trademark owner needs to provide direct evidence of trademark use to the National Trademark Office within two months. Based on the practice of representing trademark cases, the following aspects are summarized on "how to provide evidence of use related to trademark withdrawal": (1) Evidence of use within the specified three years. The "Notice on Providing Evidence of Use of Registered Trademarks" stipulates that "submit evidence of use on the approved goods from XXX, XXXX to XXXXX," and the evidence of use provided by the trademark owner should be within these three days. Within the year period, and must reflect specific time information. For example, if the time for providing evidence of use is from 2013 to 2016, then you need to provide evidence of use within these three years. Usually, the trademark owner will only provide the latest evidence of use and ignore the past three years, making it difficult for the evidence of use to be used as proof. (2) Real evidence of commercial use. Relevant evidence of use needs to be objective and true, and false contracts, invoices, and advertisements should be avoided. Regarding unreal symbolic use, judicial practice also deems the use of evidence to be invalid. For example, the release of general trademark registration information, trademark transfer, and licensing are not trademark uses. They cannot be used as primary evidence in withdrawal cases, but can only be used as auxiliary evidence. (3) Public evidence of use. The use of a trademark is not for internal use, and the relevant public should be used as the identification group. The trademark needs to be used in an open commercial field so that the relevant public can know the existence of the trademark. For example, internal office stationery, logos, office signs, etc. generally cannot be considered for public use, and they can only be used as supporting evidence. (4) Avoid unilaterally providing evidence of use. All evidence of trademark use provided must form a one-to-one correspondence and form a complete evidence chain of trademark use. Sales contracts, sales invoices, and products displaying the trademark must correspond one-to-one. For example, documents such as invoices and payment receipts printed by the company are only for internal management of the company. They cannot identify the authenticity and confirm whether actual commercial transactions have occurred, and their probative power is very limited. Usually, such evidence of use is difficult to prove without mutual support from relevant contracts, orders, invoices, payment vouchers and other materials. (5) Evidence of use within mainland China. The use of trademarks referred to in the Trademark Law shall refer to the use within mainland China. my country's Taiwan, Hong Kong, and Macao regions implement a different trademark legal system from the mainland region, and belong to different legal jurisdictions from the mainland region. Use evidence generated in Taiwan, Hong Kong, and Macao regions cannot be used as effective evidence in withdrawal cases. At the same time, in the author's agency practice, in the case of withdrawing the trademark from a foreign brand, because the trademark owner only provided evidence of trademark use in Hong Kong, the Trademark Office determined that the evidence provided was invalid. In the subsequent review of the withdrawal of the trademark, the trademark owner promptly provided the customs declaration form for entering mainland China, and the Trademark Review and Adjudication Board determined that the trademark should be maintained. Generally speaking, in the practice of trademark review, trademark owners generally can only provide part of the sales contract, invoices, product photos, product packaging and other materials, but cannot provide evidence materials that form a chain of evidence. Even if the trademark owner does use the trademark, The trademark may still be revoked. Therefore, in the process of using the trademark, the trademark owner must pay attention to collecting and retaining valid evidence of trademark use. Trademark owners should pay attention to the following issues in daily production and operation: (1) The commercial documents used in daily operations can show the trademark logo used, the goods or services for which the trademark is used, and the time when the trademark is used; (2) For outdoor advertising and promotion, attention should be paid to archiving and retention in a timely manner. Advertising contracts, invoices and advertising carriers are usually organized and bound, and trademark use can be notarized if necessary; (3) Relevant product brochures and leaflets The production sheet must be updated in a timely manner, the printing date must be clear, and the product brochure, leaflet production contract and invoice must be retained at the same time; (4) The content of the invoice issued must state the specific trademark in as much detail as possible, and must be consistent with the relevant contract content; (5) Enterprises must improve trademark and brand file management and retain the originals of the above transaction documents.