Lifinia Pty Limited v Zero Corporation

Lifinia Pty Limited (Lifinia) and Zero Corporation (Zero) were parties to a dispute before the Supreme Court of Queensland. The core of the disagreement concerned the interpretation and enforceability of a deed of settlement and release (the deed) entered into by the parties. Lifinia sought to enforce the deed, while Zero resisted enforcement, alleging that the deed was void due to a fundamental mistake.

The central legal issue before the Court was whether a mutual mistake, alleged by Zero to have been made by both parties regarding the existence of a specific debt, rendered the deed void *ab initio*. This required the Court to consider the principles of contract law relating to mistake, particularly the doctrine of common mistake, and the effect of a deed of settlement and release on pre-existing rights and obligations. The Court also had to determine whether the terms of the deed itself precluded or limited the ability of a party to rely on such a mistake.

Justice Forno found that the mistake alleged by Zero was not a mistake as to the existence of the debt itself, but rather a mistake as to the legal effect of the deed. The deed clearly and unambiguously released all claims, including those relating to the debt in question. The Court applied the principle that a party cannot rely on a mistake as to the legal effect of a document they have executed, especially where the document is a deed of settlement intended to bring finality to disputes. The Court held that the deed was not void for common mistake, as the parties had intended to settle all claims, and the alleged mistake did not go to the root of the contract in a way that would vitiate consent.

The Court ordered that Lifinia was entitled to judgment in accordance with the terms of the deed.