Attorney Regulation Act Article 34
An attorney shall be prohibited from accepting following cases in the following situations:1. Where he/she or another attorney in his/her firm has previously accepted retainer from any party which is adversary to his/her or their client, or else he/she or they had given counsel to or otherwise rendered assistance to said adversary.2. Where any subject matter had been previously handled by the attorney while he/she was acting as a judge, prosecutor or other public officials, or was engaged to exercise public power;3. Any case which had once been handled by the attorney in the capacity of an arbitrator in an arbitration proceeding;4. Any case which had once been handled by the attorney in the capacity of a mediator pursuant to law; and5. Any case which had once been handled by the attorney in the capacity of a guardian in a family case proceeding pursuant to law.Under the circumstance specified in Subparagraph 1 of the preceding paragraph, such attorney may still be retained upon the written consent of all parties whose interests may be affected.An attorney should refuse a request from a client that involves breach of law or other acts forbidden in his/her practice of law.
中文原文 律師法第34條
律師對於下列事件，不得執行其職務：
一、本人或同一律師事務所之律師曾受委任人之相對人之委任，或曾與商議而予以贊助者。
二、任法官、檢察官、其他公務員或受託行使公權力時曾經處理之事件。
三、依仲裁程序以仲裁人身分曾經處理之事件。
四、依法以調解人身分曾經處理之事件。
五、依法以家事事件程序監理人身分曾經處理之事件。
前項第一款事件，律師經利益受影響之當事人全體書面同意，仍得受任之。
當事人之請求如係違法或其他職務上所不應為之行為，律師應拒絕之。
一、本人或同一律師事務所之律師曾受委任人之相對人之委任，或曾與商議而予以贊助者。
二、任法官、檢察官、其他公務員或受託行使公權力時曾經處理之事件。
三、依仲裁程序以仲裁人身分曾經處理之事件。
四、依法以調解人身分曾經處理之事件。
五、依法以家事事件程序監理人身分曾經處理之事件。
前項第一款事件，律師經利益受影響之當事人全體書面同意，仍得受任之。
當事人之請求如係違法或其他職務上所不應為之行為，律師應拒絕之。