From Representation to Expectation: Estoppel as a Cause of Action

Abstract

In recent years, one of the most vibrant doctrines has been that of equitable estoppel. This doctrine is generally seen as having two main branches: the defensive doctrine of promissory estoppell and the older and more aggressive doctrine of proprietary estoppel, which can itself be used to obtain rights: to be the cause of action itself. The aim of this article is to analyse the central concepts of equitable estoppel in order to distinguish it from its common law counterpart, to consider its relationship to the law of contract and also to present the two main branches as being closely related concepts, based on common underlying themes.