Trademark registration can usually be applied in multiple categories, not just 10 categories. Trademark registration classification systems (such as the International Trademark Classification System, or Nice Classification) divide goods and services into different categories to help trademark holders accurately describe the scope of application of their trademarks.

During the trademark registration process, the trademark holder can select one or more relevant categories to apply based on the goods or services to which the trademark applies. Each class is associated with a specific type of goods or services, and trademark holders can select the appropriate class based on the scope of their trademark's application.

Multi-class applications for trademark registration can provide trademark holders with a broader scope of protection. By registering a trademark in the appropriate class, the trademark holder can prevent others from using a similar mark on the same or similar goods or services.

It should be noted that each category of trademark registration requires payment of corresponding fees, so selecting multiple categories may increase the cost of registration. Trademark holders should weigh the appropriate number of categories based on the characteristics of the trademark and commercial needs.

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