1. If a natural person applies, a copy of a valid ID card or passport is required;
2. Where an application is filed by a legal person, the identity certificate of the legal representative or person in charge and a copy of the ID card signed by the legal person shall be provided;
3. Where an application is entrusted to a trademark agency, a power of attorney issued by the trademark agency shall be provided;
4. If it is the certificate of the agent's application for the EU trademark, or the certificate of applying for joining the EU to embassies and consulates in China, the corresponding certificate is required.
In addition, if it is an enterprise legal person application, a copy of the business license of the enterprise legal person and the company's articles of association are also required. The specific requirements of the above documents can be different according to different application fields or different situations. It is suggested to consult and prepare according to the specific situation.