Leadenhall Australia & Ors v Peptech Ltd

Leadenhall Australia and others (the appellants) appealed to the High Court of Australia against a decision of the Full Federal Court concerning the interpretation of a deed of settlement and release entered into with Peptech Ltd (the respondent). The dispute arose from allegations that Peptech had breached certain warranties contained within the deed, which had been executed to resolve prior litigation between the parties. The appellants sought to recover damages for these alleged breaches.

The central legal issue before the High Court was whether the deed of settlement and release operated to extinguish the appellants' right to sue for breaches of warranties that had occurred prior to the execution of the deed, notwithstanding that the deed itself contained those warranties. The court was required to determine the proper construction of the release clause within the deed and its effect on the appellants' claims.

The High Court, in a joint judgment delivered by Gleeson CJ and Gummow J, held that the deed of settlement and release did not extinguish the appellants' right to sue for breaches of warranty that occurred before the deed was executed. Their Honours reasoned that the release clause, when read in context with the entire deed, was intended to release the respondent from claims that were the subject of the prior litigation or claims that might arise from the circumstances giving rise to that litigation. However, the warranties themselves were contractual obligations undertaken by the respondent, and a breach of these warranties constituted a new cause of action that accrued after the deed was executed. Therefore, the appellants were not precluded from pursuing their claims for breaches of these post-execution warranties.