Associated Mark refers to a trademark owner registering several similar trademarks on the same goods, or registering several identical or similar trademarks on different goods of the same category. , these trademarks that are similar to each other are called joint trademarks. Among these trademarks, the one registered first or mainly used is the main trademark, and the rest are joint trademarks. Due to the special role and function of joint trademarks, if one of the trademarks is left idle, it will not be revoked by the national trademark authority. Due to the similarity of the joint trademarks to each other, the joint trademarks may not be divided, used or transferred across categories.