Enforcement Act of the Part of Rights In Rem of the Civil Code Article 5

If, before the coming into force of the Rights in Rem part of the Civil Code, a statutory period of a non-prescriptive nature has already expired, the period has expired.If a period has commenced to run before the coming into force of the Rights in Rem part of the Civil Code, and if according to the provisions of the Rights in Rem part of the Civil Code regarding statutory periods of non-prescriptive nature, the period has not yet expired at the time of the coming into force of the Rights in Rem part, the period that has already run shall be reckoned together with the period after the coming into force of the Rights in Rem part.The provisions of the preceding paragraph apply mutatis mutandis to acquisitive prescription.
中文原文 民法物權編施行法第5條
民法物權編施行前,無時效性質之法定期間已屆滿者,其期間為屆滿。
民法物權編施行前已進行之期間,依民法物權編所定之無時效性質之法定期間,於施行時尚未完成者,其已經過之期間與施行後之期間,合併計算。
前項規定,於取得時效準用之。

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