Hello, the issue you mentioned requires a detailed analysis of specific cases. There is no way to say everything. According to the example you mentioned, the Trademark Office should judge it to be similar, but if you replace mom and dad, Other unrelated words are not similar. If you want to register a trademark, you can check on the Social Standards website to see if the trademarks are similar. If the trademarks are similar but registration fails, you can check here. . .