According to my knowledge, as of 2021, place names can be used for trademark registration, but certain conditions and regulations need to be met. Regulations for trademark registration may vary from region to region and country to country, so specific requirements may vary. The following are some general requirements:

1. Uniqueness: The trademark must be unique and cannot be too similar to a trademark that has been registered or used by others.

2. Distinctiveness: A trademark should be able to be distinguished from other trademarks and should not cause confusion.

3. Public interests: Some place names may belong to the public domain, such as country names, city names, etc. These place names usually cannot be registered as trademarks.

4. Geographical indication: Certain place names can be registered as trademarks, but they can only be used to indicate the geographical origin of goods or services and cannot be used for exclusive identification.

However, please note that the regulations for trademark registration may change over time, so I cannot provide the most up-to-date information. If you have specific trademark registration needs, it is recommended to consult a local trademark registration agency or professional lawyer to obtain the most accurate and up-to-date information.

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