Patent Act Article 148

Transitional provisions: patent termWith respect to a patent that is published prior to the implementation of the January 21, 1994 amendment of this Act, the patent term thereof shall be calculated in accordance with the Patent Act in effect prior to the 1994 amendment. However, for an invention patent that is still in force on the date when the WTO Agreement took effect in the territory of the ROC, the patent term thereof shall be governed by the amended Act.For a utility model patent that is published prior to the implementation of the January 3, 2003 amendment of this Act, the patent term thereof shall be governed by the Patent Act in effect prior to the amendment.For a design patent that is still in force on the date when the WTO Agreement takes effect in the territory of the ROC, the patent term shall be governed by the May 7, 1997 amendment of the Patent Act.
中文原文 專利法第148條
本法中華民國八十三年一月二十一日修正施行前,已審定公告之專利案,其專利權期限,適用修正前之規定。
但發明專利案,於世界貿易組織協定在中華民國管轄區域內生效之日,專利權仍存續者,其專利權期限,適用修正施行後之規定。
本法中華民國九十二年一月三日修正之條文施行前,已審定公告之新型專利申請案,其專利權期限,適用修正前之規定。
新式樣專利案,於世界貿易組織協定在中華民國管轄區域內生效之日,專利權仍存續者,其專利權期限,適用本法中華民國八十六年五月七日修正之條文施行後之規定。

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