authority, is intra vires ('within the powers'). Acts that are intra vires may equivalently be termed "valid", and those that are ultra vires termed "invalid"...

A treaty is a formal, legally binding written agreement concluded by sovereign states in international law. International organizations can also be party...

dealings being found to be ultra vires: the legal position was that any contract entered into beyond the power, or ultra vires, would be deemed void ab...

theory of judicial review has long been dominated by the doctrine of ultra vires, under which a decision of a public authority can only be set aside if...

"within power" (or, in Latin, intra vires); if they do not, they are termed "beyond power" (or, in Latin, ultra vires). For example, a students' union may...

powers simply by making ultra vires representations. Secondly, allowing public authorities to be bound by their ultra vires representations may potentially...

activities listed in their constitution documents, and so the concept of ultra vires continues to apply to them. Notable DACs include Ryanair and Ulster Bank...

under judicial review, the court can only intervene on the grounds of ultra vires,: 401  hence making the judgment void. Lord Esher said in Allison v General...

and quashed the two orders, citing that they were unconstitutional and ultra vires the legal provisions, as they violated the Constitution of India and...

the agreement. Riche sued, and the company pleaded that the action was ultra vires. The judges of the exchequer chamber being equally divided, the decision...