Trademark registration may be rejected under the following circumstances:

1. Similarity conflict: the trademark is too similar to an existing registered trademark or a previously applied trademark, which may easily cause confusion or misunderstanding. If accepted, it may be rejected. Trademark registration authorities will conduct similarity comparisons and contrasts to determine whether a conflict exists.

2. Lack of distinctiveness: A trademark lacks sufficient distinctiveness and is too common, descriptive or generic to be distinguished from other trademarks and may be rejected. A trademark should have a certain degree of originality and uniqueness in order to serve as an identification mark of the trademark.

3. Violate public order or good customs: Trademarks involving content that violates public order, social morality or good customs, including but not limited to obscenity, discrimination, insult, etc., may be subject to turn down. Trademarks should comply with social ethics and moral requirements.

4. Deceptive or misleading: A trademark is deceptive or misleading and may cause consumers to misunderstand or misunderstand it, and may be rejected. Trademarks should provide accurate and clear information and must not mislead consumers.

5. General prohibition standards: Trademarks involving content that is generally prohibited from registration, such as the national flag, national emblem, red cross, etc., may be rejected. Trademarks should comply with national or regional laws, regulations and regulations.

These are some common situations in which trademark registration may be rejected. The specific reasons for rejection may vary depending on the trademark laws of the country or region. The trademark holder can make amendments or file objections based on the reasons for rejection to strive for successful trademark registration.

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