The analysis of this thesis is to examine whether foreign investors can fully rely on the standard of FPS in BITs for the protection of their investments in the territories of host States which has been mandated to States by international law. This question cannot be answered without giving insights into the content and structure of the origin of FPS standard and adopts a dynamic based-perspective of the interpretation of FPS under VCLT 1969, encompassing the relationship between FPS and CIL. It investigates the tribunals' interpretation of the clause using case laws and literatures to identify and explore the underlying explanatory process behind tribunals' case findings and outcomes. The study examines the critical realism that the obligation of FPS standard does not place absolute liability to a host State, rather the exercise of a reasonable degree of vigilance. It evaluates the controversy surrounding the relationships between FPS and FET, and illuminates on how the two standards may co-evolve which has led to various arbitral tribunals' divergence opinions interpretation of the two principles. The evaluation of the application of FPS to digital assets is dynamic in this research as it addresses the nature of threats investors face globally today over cyber attacks of digital investments. The thesis also emphasis on balancing up investors' rights and obligation, which explains the measures that States can apply to prevent foreign investors from engaging in illegitimate activities. Having look at all these issues, circumstances, and the controversies surrounding FPS standard, the result found is that there is a existence of a gap in this area of the law, that would mean that foreign investors cannot completely rely on the principle of FPS for the protection of their investments in the territories of the host unless this lacunae is properly filled by both the States and arbitral tribunals, especially the tribunals' interpretative meaning of the standard of FPS.

L’objectif de cette recherche est de démontrer que les décisions arbitrales de la Chambre de commerce internationale peuvent être considérées comme une source potentielle de droit au Canada. Il existe actuellement une incertitude quant au droit matériel utilisé en arbitrage international pour résoudre les différends commerciaux. Bien que l’utilisation de la lex mercatoria pour résoudre un litige soit une option, elle se heurte à de nombreuses incertitudes terminologiques et conceptuelles. L’utilisation d’une approche méthodologique de la lex mercatoria permettrait une classification de ses sources en deux branches: (1) le droit statutaire international et (2) le stare decisis des tribunaux d’arbitrage commercial international. Une telle approche méthodologique conférerait plus de certitude quant à l’application d’un droit uniforme. De plus, elle faciliterait l’étude de l’interlégalité entre les règles de la lex mercatoria et le droit matériel interne. Plus particulièrement, elle permet de comparer les similitudes et les différences des règles du droit matériel entre les décisions arbitrales internationales, le droit statutaire international et les juridictions canadiennes de common law et de droit civil. Cette comparaison rend possible une évaluation de l’influence potentielle des décisions arbitrales de la Chambre de commerce internationale sur le droit matériel canadien et si cette influence est plus importante en droit civil ou en common law. / This paper’s objective is to demonstrate that the International Chamber of Commerce’s arbitral awards may be considered as a potential source of law in Canada. There currently exists an uncertainty as to the substantive law used in international commercial arbitration. While the use of lex mercatoria to solve commercial disputes is often referred to, several terminological and conceptual uncertainties undermine its credibility. The use of a methodological approach to lex mercatoria allows for a twofold classification of its sources through: (1) international legislation and (2) stare decisis from international arbitral tribunals. This methodological approach provides a greater certainty for the application of a uniform law which, in turn, allows for the study of interlegality between rules of lex mercatoria and substantive domestic law. Furthermore, this methodological approach facilitates the demonstration of the similarities and differences between international arbitral decisions, international legislation as well as Canadian common law and civil law jurisdictions. This comparative analysis will allow the study of the potential influence of the arbitral decisions of the International Chamber of Commerce on substantive Canadian law and whether this influence is more important in civil law or common law.

Este trabalho trata do funcionamento da prescrição extintiva relacionada a ações pessoais, além da decadência, no âmbito do direito internacional privado. Primeiramente é feita uma breve análise histórica e comparatista do direito de regência da prescrição em relações de caráter internacional antes de se demonstrar a solução abarcada pelo direito brasileiro: a regência pela lei que rege a obrigação (lex causae). Apesar de ser um instituto de direito civil, substantivo, a prescrição possui muitas ligações com o direito processual, uma vez que o principal efeito de sua consumação é tonar inexigível uma obrigação e, em decorrência, pôr fim a um processo. Assim, o autor detalha em seguida as questões que são regidas pela lex causae e as que são regidas pela lex fori (aqui abrangendo também a lex arbitri) em matéria de prescrição no direito brasileiro, antes de tratar minuciosamente de como se opera a exceção da ordem pública para afastar a aplicação da lex causae estrangeira em matéria de prescrição no Brasil (incluindo também regras de aplicação imediata lois de police brasileiras). Ao final, cuida-se da prescrição na homologação e execução de sentenças estrangeiras no Brasil. / This work deals with the operation of limitation periods (prescription) related to actions in personam in the domain of the conflict of laws. It starts with a historical and comparatist analysis of its governing law in international relations before the rule adopted by the Brazilian law is shown: the law of the obligation as the governing law of the limitation rules (lex causae). Although limitation of actions is considered a substantive issue under Brazilian law, it is closely connected with procedural law in many aspects, since its main effect is to render an obligation unenforceable and thus terminate a lawsuit. Therefore, the author presents in detail the issues that are governed by the lex causae and the issues that are governed by the lex fori (also comprising the lex arbitri) related to limitations under Brazilian law, before he deals thoroughly with the operation of the public policy exception to the application of a foreign lex causae in such a matter (also comprising Brazilian imperative rules lois de police). And finally, this work handles the operation of statutes of limitation in proceedings for recognition and enforcement of foreign judicial and arbitral decisions in Brazil.

Este trabalho trata do funcionamento da prescrição extintiva relacionada a ações pessoais, além da decadência, no âmbito do direito internacional privado. Primeiramente é feita uma breve análise histórica e comparatista do direito de regência da prescrição em relações de caráter internacional antes de se demonstrar a solução abarcada pelo direito brasileiro: a regência pela lei que rege a obrigação (lex causae). Apesar de ser um instituto de direito civil, substantivo, a prescrição possui muitas ligações com o direito processual, uma vez que o principal efeito de sua consumação é tonar inexigível uma obrigação e, em decorrência, pôr fim a um processo. Assim, o autor detalha em seguida as questões que são regidas pela lex causae e as que são regidas pela lex fori (aqui abrangendo também a lex arbitri) em matéria de prescrição no direito brasileiro, antes de tratar minuciosamente de como se opera a exceção da ordem pública para afastar a aplicação da lex causae estrangeira em matéria de prescrição no Brasil (incluindo também regras de aplicação imediata lois de police brasileiras). Ao final, cuida-se da prescrição na homologação e execução de sentenças estrangeiras no Brasil. / This work deals with the operation of limitation periods (prescription) related to actions in personam in the domain of the conflict of laws. It starts with a historical and comparatist analysis of its governing law in international relations before the rule adopted by the Brazilian law is shown: the law of the obligation as the governing law of the limitation rules (lex causae). Although limitation of actions is considered a substantive issue under Brazilian law, it is closely connected with procedural law in many aspects, since its main effect is to render an obligation unenforceable and thus terminate a lawsuit. Therefore, the author presents in detail the issues that are governed by the lex causae and the issues that are governed by the lex fori (also comprising the lex arbitri) related to limitations under Brazilian law, before he deals thoroughly with the operation of the public policy exception to the application of a foreign lex causae in such a matter (also comprising Brazilian imperative rules lois de police). And finally, this work handles the operation of statutes of limitation in proceedings for recognition and enforcement of foreign judicial and arbitral decisions in Brazil.