1. In relation to the third party in third party proceedings, the exchange of lists of documents between the third party and the defendant or the plaintiff, where the third party is brought in by a third party notice. The procedure of discovery within 14 days after close of pleadings does not apply in third party proceedings: The Rules of the High Court (Cap 4A) O 24 r 2(1). 2. In relation to a third party, the general rule is that the court has no power to order discovery or production of documents against a person who is not a party to the action, or was a mere witness, but there are exceptions to this rule. Where a person, though no fault of his own, had been involved in the wrongful acts of another so as to facilitate the wrongdoing, he was under a duty to assist the person who had been wronged by giving him full information and disclosing the identity of the wrongdoer: Norwich Pharmacal Co v Customs and Excise Cmrs [1973] 2 All ER 943. It is a matter of judicial necessity: Re Greater Beijing Region Expressways Ltd (No 2) [2000] 2 HKC 118. This principle is not limited to identity of wrongdoers only, it may extend to cover other information: Philip Lawrence Choy v Nissei Sangyo America Ltd [1992] 2 HKLR 177. However, an applicant for such an order must show a prima facie case of infringement, the strength of his case is one of the factors to be weighed in the balance. If it is no more than a ‘fishing’ expedition, or is oppressive, unreasonable and inappropriate for the third party to comply with, the application is not allowed: Seacliff Ltd v Decca Ltd & Ors (No 2) [2001] 1 HKC 588. See also Discovery; Third party; Third party notice.
1.　就第三方在第三方的法律程序而言（第三方是由第三方通知提出），指第三方及被告人或原告人之間交換有關文件的清單。在狀書提交期結束後的14天內擬備一份文件清單的透露程序，並不適用於第三方的第三方法律程序：《高等法院規則》（第4A章）第24號命令第2(1)條規則。　　2.就非與訟一方的第三方而言，一般的原則是法庭沒有針對非與訟一方的人或僅屬證人的人作出透露文件或提交文件命令的權利，但此原則有例外。如一人在沒有由他／她本身作出錯失的情況下，牽涉他人的錯誤作為以促進有關的錯誤作為，則他／她有責任協助受錯誤作為對待的人，即給予他／她所有的資料及披露不法行為者的身份：Norwich Pharmacal Co v Cmr of Customs and Excise [1973] 2 All ER 943。第三方的文件透露是司法程序所需的事宜：Re Greater Beijing Region Expressways Ltd (No 2) [2000] 2 HKC 118。此原則並不僅限於不法行為者的身份，可引伸而適用於覆蓋其他資料：Philip Lawrence Choy v Nissei Sangyo America Ltd [1992] 2 HKLR 177。但此等命令的申請者必須顯示有關案件表面上有侵犯行為，證明的標準是以相對可能性衡量有關的案件。如有關的案件僅屬於「試探」的行動，或對第三方在履行上，屬於欺壓、不合理或不適當，則有關的申請不會獲得許可：Seacliff Ltd v Decca Ltd & Ors (No 2) [2001] 1 HKC 588。另見 Discovery; Third party; Third party notice。

• Costs disclosure
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