Trademark registration is subject to the provisions of trademark laws in different countries or regions. Generally, the following content cannot be registered as a trademark:

1. Common vocabulary or descriptive words: generally used common vocabulary, Common descriptive words or general combinations of letters and numbers generally cannot be registered as trademarks. A trademark should be unique and distinctive so that it can be distinguished from other trademarks.

2. Deceptive labels: You must not use labels that may mislead, confuse or deceive consumers. A trademark should truly and accurately reflect the goods or services it refers to.

3. National flag, national emblem and logo of international organizations: Generally, the national flag, national emblem, logo of international organization or logo with national symbolic significance cannot be used as a trademark unless corresponding authorization or permission is obtained.

4. Others’ well-known marks: You cannot use others’ trademarks or logos that have gained popularity for registration to avoid infringement and confusion.

5. Illegal or prohibited content: Trademarks cannot contain illegal or prohibited content, such as obscenity, violence, racial discrimination, etc.

6. Marks that are contrary to public order and good customs: Trademarks should not violate public order and good customs, and should not have negative meanings in terms of social morals or ethical concepts.

Please note that different countries or regions may have different requirements for trademark registration. Before registering a trademark, it is recommended to learn more about the trademark laws of the target country or region and consult a professional trademark agency or lawyer for accurate guidance and advice.

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