Enforcement Rules of the Trademark Act Article 3
The applications and documents submitted in relation to trademark matters shall be in Chinese. When the documents of proof are in foreign languages, the Registrar Office may give a notice to furnish a full or excerpted Chinese translation thereof if it deems necessary.
中文原文 商標法施行細則第3條
申請商標及辦理有關商標事項之文件，應用中文；證明文件為外文者，商標專責機關認有必要時，得通知檢附中文譯本或節譯本。