Code of Civil Procedure Article 56
Wherever a claim must be adjudicated jointly with regard to all co-parties, the following subparagraphs shall apply:1. Any act conducted by one of the co-parties in the interest of all co-parties will be effective with regard to all of them; any act conducted by one of the co-parties against the interests of all co-parties will have no effect with regard to all of them. 2. Any act conducted by the opposing party against one of the co-parties will be effective with regard to all of them;3. Any reason for a stay of proceeding, either by operation of law or by a court ruling, that arises with regard to one of the co-parties, will take effect with regard to all of them. When one of the co-parties, as described in the preceding paragraph, petitions for an appeal, and one or more of the other co-parties are persons who have been declared requiring assistantship, the provisions of Article 45-1 Paragraph 2 shall apply mutatis mutandis.
中文原文 民事訴訟法第56條
訴訟標的對於共同訴訟之各人必須合一確定者，適用下列各款之規定：
一、共同訴訟人中一人之行為有利益於共同訴訟人者，其效力及於全體；不利益者，對於全體不生效力。
二、他造對於共同訴訟人中一人之行為，其效力及於全體。
三、共同訴訟人中之一人生有訴訟當然停止或裁定停止之原因者，其當然停止或裁定停止之效力及於全體。
前項共同訴訟人中一人提起上訴，其他共同訴訟人為受輔助宣告之人時，準用第四十五條之一第二項之規定。
一、共同訴訟人中一人之行為有利益於共同訴訟人者，其效力及於全體；不利益者，對於全體不生效力。
二、他造對於共同訴訟人中一人之行為，其效力及於全體。
三、共同訴訟人中之一人生有訴訟當然停止或裁定停止之原因者，其當然停止或裁定停止之效力及於全體。
前項共同訴訟人中一人提起上訴，其他共同訴訟人為受輔助宣告之人時，準用第四十五條之一第二項之規定。