After a trademark is successfully registered, the trademark owner obtains exclusive rights to the trademark, which means that others cannot use the same or confusing trademark on the same or similar goods or services. However, trademark rights and business licenses are two different concepts, and trademark rights do not directly affect the use of business licenses.

A business license is a document used to prove the legal operation of a company, while trademark registration protects the exclusive rights of a trademark in commercial activities. Even if the trademark registration is successful and someone else has previously registered a business license with the same name, generally speaking, this will not be directly affected by trademark law.

However, there are some situations that may require attention:

1. Principle of first right: In commercial activities, the principle of first to register, first to right usually applies. If someone else has registered the same or similar business name before your trademark registration, they may have prior rights.

2. Local regulations: Some places may have specific regulations that require companies to avoid conflicts with existing companies when registering locally.

3. Brand image: Although trademark registration can provide strong legal protection, it is recommended that companies also pay attention to their own brand image and try to avoid confusion or disputes with other companies to maintain goodwill.

In general, the relationship between trademark rights and business license rights is complex, and specific situations may be affected by laws, regional regulations and the principle of priority. If you are concerned about possible conflicts, it is recommended to consult a professional intellectual property lawyer for specific legal advice.

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