First, you can sue the other party for infringement. Second, the trademark of traditional Chinese characters does not belong to you. For better protection, traditional Chinese characters can also be registered as trademarks (different fonts in the same category belong to different trademarks). Third, you can use other fonts in your category, which may involve nonstandard use. Fourth, others just modify the font and will be rejected because of your trademark. However, whether other trademarks with changed word order can be registered depends on the specific similarity.