Trademark registration for sub-categories does not in itself constitute infringement of other trademarks. Trademark registration subcategory is a subdivision in the trademark classification system, used to classify and classify different types of goods or services. The purpose of the trademark registration subcategory is to better manage and organize trademark information, so that trademark registration agencies and trademark rights holders can more accurately determine the scope of application of trademarks.

The judgment of trademark infringement is mainly based on the similarity and likelihood of confusion of the trademark. Even if two trademarks belong to the same subcategory, if they are very similar in appearance, phonetic symbols, or meaning, it may cause confusion among consumers, leading them to mistakenly believe that these goods or services are related or come from the same source. In this case, the use of similar or identical trademarks may constitute infringement even if the trademarks belong to the same sub-category.

Therefore, the sub-category of trademark registration is only a tool for trademark classification and cannot be used alone to determine infringement. When judging trademark infringement, factors such as the similarity of the trademark, the relevance of the goods or services, and the degree of confusion that may cause need to be comprehensively considered.

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