Pertronic Industries Ltd v Firetonics Pty Ltd

Pertronic Industries Ltd (the applicant) sought an interlocutory injunction against Firetonics Pty Ltd (the respondent) to restrain the alleged infringement of its registered design for a fire alarm system. The dispute concerned the respondent's sale of a fire alarm system that the applicant claimed was substantially similar to its registered design, thereby constituting an infringement. The application for an interlocutory injunction was heard in the Federal Court of Australia.

The primary legal issue before the Court was whether the applicant had established a serious question to be tried regarding the infringement of its registered design. This involved assessing whether the respondent's product was substantially similar to the registered design, considering the degree of resemblance and the extent to which the respondent's product departed from the registered design. The Court also had to consider the balance of convenience, determining whether the applicant would suffer irreparable harm if the injunction were not granted, and whether the respondent would suffer greater harm if it were.

In its reasoning, the Court applied the principles governing interlocutory injunctions, requiring the applicant to demonstrate a serious question to be tried and that damages would not be an adequate remedy. The assessment of substantial similarity involved a visual comparison of the designs, taking into account the overall visual impression and the essential features of the registered design. The Court considered the prior art and the scope of the monopoly granted by the registration. The balance of convenience favoured the applicant, as the potential for ongoing infringement and the difficulty in quantifying damages weighed against the respondent's potential loss of profit.

The Court granted the interlocutory injunction, restraining the respondent from infringing the applicant's registered design pending the final determination of the proceedings.