1. Advantages and disadvantages of a trademark with one mark and multiple categories (one certificate for multiple categories):

Advantages: Only one application is required for application, and only one review is required. A trademark registration number is granted and a trademark registration certificate is issued. For corporate or individual trademark applicants, it reduces the workload of trademark applicants and facilitates unified management of trademarks after issuance of the license (such as unified trademark renewal, change procedures, etc.); for trademark management work, it reduces the workload of trademark applicants. Registration number resources reduce administrative costs for trademark management.

Disadvantages: Later management is troublesome. When the trademark is opposed by others, withdrawn or declared invalid, it involves trademark division (not active division). In addition, when one trademark is transferred and licensed in multiple categories, it needs to be transferred together. and authorization cannot be operated independently.

2. Advantages and Disadvantages of a trademark with one mark and one category (multiple categories and multiple certificates):

Advantages: It is convenient for trademark applicants to use and manage trademarks, and when conducting trademark sales and authorization, It can be done separately by category, and when it comes to trademark cases (opposition, invalidity, rejection, withdrawal), it can be done individually.

Disadvantages: Managing multiple certificates, trademark renewals and changes must be done separately and cannot be done in a unified manner.

In short, unless a large company will not give up its trademark at will, it is not recommended to use one trademark for multiple categories, as it will do more harm than good.