Code of Civil Procedure Article 471
Where the appellant has failed to indicate the reasons for appeal in the notice of the appeal, he/she shall supplement the reason for the appeal in writing to the original court of second instance within twenty days after filing the appeal. Where the appellant fails to do so, the court of second instance shall dismiss the appeal by a ruling without ordering rectification.Within fifteen days following the service of the notice of appeal, the appellee may submit either an answer to the original court of second instance or submit the reason for the appeal in writing provided in the preceding paragraph.After receiving the answer or after the period provided in the preceding paragraph has expired, the court of second instance shall forward the dossier to the court of third instance.Where the appeal is filed after the judgment is announced but before it is served, the period provided in the first paragraph shall start to run after the judgment is served.
中文原文 民事訴訟法第471條
上訴狀內未表明上訴理由者，上訴人應於提起上訴後二十日內，提出理由書於原第二審法院；未提出者，毋庸命其補正，由原第二審法院以裁定駁回之。
被上訴人得於上訴狀或前項理由書送達後十五日內，提出答辯狀於原第二審法院。
第二審法院送交訴訟卷宗於第三審法院，應於收到答辯狀或前項期間已滿後為之。
判決宣示後送達前提起上訴者，第一項之期間自判決送達後起算。
被上訴人得於上訴狀或前項理由書送達後十五日內，提出答辯狀於原第二審法院。
第二審法院送交訴訟卷宗於第三審法院，應於收到答辯狀或前項期間已滿後為之。
判決宣示後送達前提起上訴者，第一項之期間自判決送達後起算。