A: Yes, there is. To register a trademark, the following conditions must be met.
(1) A mark for which identical or similar trademarks are not registered
(2) A mark with clear characteristics
(3) A mark that does not cause to misunderstand the goods
(4) A mark that does not violate the public interest

The following are examples of marks that cannot be registered.
(1) A mark that cannot distinguish own goods or servises from the third party’s
(2) A mark contrary to public interest, such as confusing public agency marks
(3) A mark that may be confused with the third party’s registered trademarks or well-known trademarks