Optus Mobile Pty Ltd v Telstra Corporation Ltd

In the matter of Optus Mobile Pty Ltd v Telstra Corporation Ltd, the Federal Court was tasked with determining whether Telstra's "Unlimited" advertisements for its mobile plans breached the Australian Consumer Law by engaging in misleading or deceptive conduct. The crux of the dispute revolved around whether Telstra's use of the word "Unlimited" in its advertisements falsely represented the nature or characteristics of its mobile services, particularly considering that the "unlimited" plans came with certain restrictions, such as device limitations and speed throttling after exceeding a data usage threshold.

The court had to decide if Telstra's advertisements conveyed to ordinary and reasonable consumers that the "Unlimited" plans were truly without limits, or if the term merely evoked a sense of wonderment without any specific reference to the limitations inherent in the plans. This required a careful analysis of how the term "Unlimited" was presented in conjunction with Telstra's branding and logo, and whether it would naturally lead consumers to associate the term with the usage and geographic coverage of Telstra's network.

The court reasoned that Telstra's advertisements did mislead consumers by implying that the "Unlimited" plans offered truly unlimited mobile services, which was not the case due to the imposed restrictions. The court found that Telstra's advertisements breached Australian Consumer Law, as they failed to clearly communicate the limitations associated with the "unlimited" plans. The decision hinged on the conclusion that reasonable consumers would understand the term "Unlimited" as pertaining to the usage and/or geographic coverage of Telstra's mobile network, and that these representations were false in light of the actual plan limitations.

As a result, the court held that Telstra had engaged in misleading and deceptive conduct under the Australian Consumer Law. The orders of the court included listing the proceeding for hearing of the applicant's claims for further relief and directing Telstra to pay the applicant's costs of the proceeding to date. This decision underscored the importance of clear and prominent disclosure of all material terms and conditions associated with advertised services to prevent misleading consumers.