Legal analysis: To add categories to a registered trademark, you need to find an intellectual property agency. If you are an individual, you need a personal ID card and a self-employed person. If you are a company, you need the company's business license.

Legal basis: Article 444 of the "People's Republic of China and Civil Code" if property rights in intellectual property rights such as registered trademark rights, patent rights, copyrights, etc. are pledged, the pledge rights shall be It is established when handling the pledge registration.

After the property rights in intellectual property rights are pledged, the pledgor shall not transfer or permit others to use them, unless the pledgor and the pledgee agree through negotiation. The price obtained by the pledgor from transferring or permitting others to use the property rights in the pledged intellectual property rights shall be paid off the debt in advance or deposited to the pledgee.