Enforcement Law for Part IV, Family Law of the Civil Code Article 10

The provisions of the PART of FAMILY of the CIVIL CODE concerning the child born out of wedlock shall apply from the date of the coming into force of the said PART to the child born out of wedlock before the coming into force of the PART of FAMILY of the CIVIL CODE.The provisions of Article 1067 of the revised CIVIL CODE shall also apply to a child born out of wedlock before the revision of the PART of FAMILY of the CIVIL CODE.
中文原文 民法親屬編施行法第10條
非婚生子女在民法親屬編施行前出生者,自施行之日起適用民法親屬編關於非婚生子女之規定。
非婚生子女在民法親屬編修正前出生者,修正之民法第一千零六十七條之規定,亦適用之。

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