As artificial intelligence (AI) systems become more sophisticated and play a larger role in society, arguments that they should have some form of legal personality gain credence. The arguments are typically framed in instrumental terms, with comparisons to juridical persons such as corporations. Implicit in those arguments, or explicit in their illustrations and examples, is the idea that as AI systems approach the point of indistinguishability from humans they should be entitled to a status comparable to natural persons. This article contends that although most legal systems could create a novel category of legal persons, such arguments are insufficient to show that they should.

The landmark Supreme Court judgment in Prest v Petrodel Resources Ltd provides a significant reassessment of the law relating to a court's ability to circumvent corporate personality. The Supreme Court considered that the application of ordinary legal principles (‘the concealment principle’) should ordinarily override a court's ability to apply an equitable veil-piercing doctrine (‘the evasion principle’). Whilst accepting the primacy of the concealment principle, this paper disputes the correctness of the Supreme Court's implied assertion that, in cases concerning ‘one-man type’ companies, the concealment principle should be advanced through application of agency-derived principles. Rather, this paper contends that the concealment principle should be progressed by adopting solutions derived from the law of constructive trusts and associated principles of equity. To an objective of providing a doctrinally sound framework for the development of the law in the post-Prest era, this paper further suggests that the constituent elements of the evasion principle could be consistent with the operation of a distinct species of constructive trust. Moreover, it is argued that, in future, this ‘evasion trust’ should, in complete abrogation of the equitable piercing doctrine, be developed so as to apply in all cases exhibiting intentional and fraudulent abuses of the incorporation process.

This article proposes a model of treaty-based veil piercing for civil liability claims by victims of human rights harm inflicted by businesses. The primary inspiration for this model comes from investment treaty provisions dealing with corporate investors. Our examination of investment law for this purpose exposes the double standard in the treatment of the corporate veil between these two remedy regimes, and offers a way to address this. The test we propose for lifting the veil in order to allow victims to claim against the parent company in a corporate group is one of ‘legal control’. It aims to capture cases where the parent did not necessarily take an active role in the subsidiary's business, but it is still treated as being in control of the subsidiary by virtue of its direct or indirect ownership or ability to appoint management.

This article examines the legal as well as political feasibility of four potential options for a legally-binding international instrument in the area of business and human rights. The four options that the open-ended intergovernmental working group may wish to consider while negotiating an instrument are: (i) to clarify and strengthen the states’ duty to protect human rights, including extraterritorially; (ii) to oblige states, through a framework convention, to report on the adoption and implementation of national action plans on business and human rights; (iii) to impose direct human rights obligations on corporations and establish a new mechanism to monitor compliance with such obligations; and (iv) to impose duties of mutual legal assistance on states to ensure access to effective remedies for victims harmed by transnational operations of corporations. As these options are not mutually exclusive, the author argues that a hybrid instrument building on elements of the first and the fourth option may be the best way forward both in terms of political feasibility and improving access to effective remedies for victims.