The Enforcement Rules for the Plant Variety and Plant Seed Act Article 18

Those applying to nullify or cancel a third party's plant variety right shall submit a written statement of the following matters to the central competent authority:1. the plant species/genus and the variety denomination;2. the certificate number and issuance date;3. the nationality, name, and residence of the abandoning person. The name, office location or place of business, and name, residence, and phone number of the legal representative or manager if the applicant is a juristic person or organization;4. the reason and evidence for nullification or cancellation;5. the applicant's seal or signature and6. the application date.The applicant may submit the evidence specified in Subparagraph 4 of the preceding Paragraph within 30 days of the date of application for nullification or cancellation.
中文原文 植物品種及種苗法施行細則第18條
申請撤銷或廢止他人品種權者,應以書面載明下列事項向中央主管機關申請:
一、該品種之植物種類及品種名稱。
二、證書號碼及發證日期。
三、申請人之國籍、姓名、住、居所。
如係法人或團體者,其名稱、事務所或營業所及其代表人或管理人之姓名、住、居所、聯絡電話。
四、撤銷或廢止之理由及證據。
五、申請人簽名或蓋章。
六、申請日期。
前項第四款所定證據,申請人得自提出撤銷或廢止之日起三十日內補提之。

English translation for reference only; the Chinese text prevails. Not legal advice.