This article employs a mixed methodological approach to evaluate non-disputing party (NDP) participation by means of amici curiae submissions in investment disputes settled by the International Centre for the Settlement of Investment Disputes (ICSID). The work presents and analyzes statistics on NDP participation in ICSID cases in order to investigate whether amicus submissions are a suitable vehicle for the incorporation of the views of NDPs, and whether they contribute to the development of international investment law and policy. The article argues that amicus briefs are a welcome addition to the ICSID arbitral process in theory, having contributed to the enhancement of the rule of law in investment arbitration through increased transparency. However, the level of NDP participation that amicus briefs provide within ICSID is minimal, and the extent to which they may affect the final outcome of the case is very much at the discretion of the individual tribunal. In light of this, and recognizing previous research that has noted the potential benefits of amici curiae submissions in dispute settlement processes (investment and otherwise), this article will go on to suggest reforms to enhance the participation of NDPs in ICSID arbitration. This will, in turn: contribute to the development of international investment law and policy; increase its integration with other branches of public international law (namely human rights); and enhance transparency and respect for the rule of law.

中文翻译：

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非争议方参与 ICSID 争议：Faux Amici？

本文采用混合方法论，通过法庭之友在由国际投资争端解决中心 (ICSID) 解决的投资争端中提交的意见来评估非争端方 (NDP) 的参与。这项工作展示并分析了有关 NDP 参与 ICSID 案件的统计数据，以调查法庭之友提交的意见是否适合纳入 NDP 的观点，以及它们是否有助于国际投资法律和政策的发展。文章认为，法庭之友摘要在理论上是对 ICSID 仲裁程序的一个受欢迎的补充，通过提高透明度有助于加强投资仲裁的法治。然而，在 ICSID 内，法庭之友简报提供的 NDP 参与程度是最低的，它们对案件最终结果的影响程度在很大程度上取决于各个法庭的自由裁量权。鉴于此，并认识到先前的研究已经注意到法庭之友提交在争端解决过程（投资和其他）中的潜在好处，本文将继续建议改革，以加强 NDP 参与 ICSID 仲裁。反过来，这将： 促进国际投资法律和政策的发展；加强与国际公法其他分支（即人权）的整合；并提高透明度和对法治的尊重。并认识到之前的研究已经注意到法庭之友提交在争端解决过程（投资和其他）中的潜在好处，本文将继续建议改革，以加强 NDP 参与 ICSID 仲裁。反过来，这将： 促进国际投资法律和政策的发展；加强与国际公法其他分支（即人权）的整合；并提高透明度和对法治的尊重。并认识到之前的研究已经注意到法庭之友提交在争端解决过程（投资和其他）中的潜在好处，本文将继续建议改革，以加强 NDP 参与 ICSID 仲裁。反过来，这将： 促进国际投资法律和政策的发展；加强与国际公法其他分支（即人权）的整合；并提高透明度和对法治的尊重。加强与国际公法其他分支（即人权）的整合；并提高透明度和对法治的尊重。加强与国际公法其他分支（即人权）的整合；并提高透明度和对法治的尊重。