Legal analysis: The materials required for invalid patent application are as follows: 1, personal identification certificate of the client or business license of the enterprise and legal person certificate; 2, the patentee's patent certificate, authorized patent announcement documents; 3. Previously published patent documents, previously published scientific and technological documents, known technologies and other technical materials related to invalid patents; 4. When the patent invalidation involves an infringement dispute, the client shall also provide the following materials: (1) the client's products, photos, product manuals and other materials; (two) all documents served by the people's court, including the complaint; (3) An explanation of the production and operation, technical source, time and production preparation of the products accused by the principal of infringement.
Legal basis: Article 22 of the Trademark Law of People's Republic of China (PRC). The applicant for trademark registration shall fill in the category and name of the goods using the trademark in accordance with the prescribed commodity classification table and apply for registration. An applicant for trademark registration may apply for the registration of the same trademark for many kinds of goods through one application. Applications for trademark registration and other relevant documents may be submitted in written form or in the form of data messages.