Patent Act Article 63

Sub-licensingAn exclusive licensee may sub-license a third party to exploit the licensed patent unless otherwise agreed upon by contract.A non-exclusive licensee shall not be allowed to sub-license a third party to exploit the licensed patent without the consent of the invention patentee or the exclusive licensee.The sub-licensing contract shall have no locus standi against any third party unless it is recorded with the Specific Patent Agency.
中文原文 專利法第63條
專屬被授權人得將其被授予之權利再授權第三人實施。
但契約另有約定者,從其約定。
非專屬被授權人非經發明專利權人或專屬被授權人同意,不得將其被授予之權利再授權第三人實施。
再授權,非經向專利專責機關登記,不得對抗第三人。

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