TCN Channel 9 Pty Limited v Mahony

TCN Channel 9 Pty Limited (the appellant) appealed to the New South Wales Court of Appeal against a decision of the Supreme Court of New South Wales. The dispute concerned the publication of certain material by Channel 9, which the respondent, Mr. Mahony, alleged constituted a breach of confidence. Mr. Mahony sought an injunction to restrain further publication and damages.

The primary legal issues before the Court of Appeal were whether the information published by Channel 9 was protected by an obligation of confidence, and if so, whether Channel 9 had breached that obligation. The court was required to consider the nature of the information and the circumstances under which it was obtained and published to determine if the equitable doctrine of breach of confidence applied.

The Court of Appeal, in its reasoning, affirmed that for an obligation of confidence to arise, the information must be possessed of the necessary quality of confidence, it must have been imparted in circumstances importing an obligation of confidence, and there must be an unauthorised use of that information to the detriment of the party communicating it. The court found that the information in question did possess the necessary quality of confidence and that it had been imparted under circumstances that created such an obligation. Consequently, the court held that Channel 9's publication constituted a breach of confidence.

The Court of Appeal allowed the appeal in part, varying the orders of the Supreme Court. While it upheld the finding of a breach of confidence, it modified the scope of the injunction and the assessment of damages.