The Plant Variety and Plant Seed Act Article 17

With regard to the same variety, the applicant who applies for the first time at a country or World Trade Organization member that has the mutual recognition of priority right with the R.O.C. and submits an application for the variety right within twelve (12) months after the first application date may claim the priority right.Where an applicant has first applied for a variety in a foreign country, which reciprocally allows ROC nationals to claim variety priority, or with any member of the World Trade Organization (WTO), the applicant may claim priority in respect of an ROC variety application for the same variety if the ROC variety application for the same variety is filed within twelve (12) months after the filing date of the said first variety application.An applicant who claims the priority right pursuant to the preceding paragraph shall simultaneously make a declaration, and submit evidentiary proof of the application as accepted by the country or WTO member referred to in the preceding paragraph within 4 months from the next day of the application date. An applicant is not entitled to the right of priority if he/she fails to fulfill the aforementioned requirements.In the case that an applicant claims the priority right, the review of the elements of the plant variety right shall be based on the date of the priority right.
中文原文 植物品種及種苗法第17條
申請人就同一品種,在與中華民國相互承認優先權之國家或世界貿易組織會員第一次依法申請品種權,並於第一次申請日之次日起十二個月內,向中華民國提出申請品種權者,得主張優先權。
依前項規定主張優先權者,應於申請時提出聲明,並於申請日之次日起四個月內,檢附經前項國家或世界貿易組織會員證明受理之申請文件。
違反者,喪失優先權。
主張優先權者,其品種權要件之審查,以優先權日為準。

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