Trademark protection is one of the important aspects of brand protection, which refers to the protection of the intellectual property rights contained in the brand, such as trademarks, patents, trade secrets, etc. The most important weapon for brand protection is the law. The core of brand protection is the protection of trademark rights, that is, the legal protection of the exclusive right to use a trademark (which has been registered). The scope of brand protection is greater than the scope of trademark protection. An enterprise's self-protection of its brand includes both trademark protection and non-trademark protection. According to Article 51 of my country’s Trademark Law: “The exclusive right of a registered trademark is limited to the trademark approved for registration and the goods approved for use.” This shows that the protection of registered trademarks is limited. This provision of the Trademark Law also defines the scope of protection of registered trademarks. Generally, registered trademarks are only protected by law within the category in which they belong. The so-called all-category protection means that all categories are protected. The above is the answer to why trademark rights should be protected