Aitken Enterprises Pty Ltd v The Lincoln Electric Company

Aitken Enterprises Pty Ltd (the applicant) sought an interlocutory injunction against The Lincoln Electric Company (the respondent) to restrain the respondent from continuing to sell certain welding machines. The applicant alleged that the respondent's machines infringed its registered design rights. The matter came before Bianca Irgang in the Federal Court of Australia.

The primary legal issue before the Court was whether the applicant had established a strong prima facie case of infringement of its registered design rights, such that an interlocutory injunction should be granted. This required the Court to consider whether the respondent's machines were substantially similar to the applicant's registered design, and whether the respondent had a valid defence.

Her Honour applied the principles governing the grant of interlocutory injunctions, which require the applicant to demonstrate a serious question to be tried and that the balance of convenience favours the granting of the injunction. In assessing the substantial similarity, the Court considered the visual appearance of the designs, focusing on the overall impression conveyed to the ordinary user. The Court also considered the scope of the registered design and the extent to which the respondent's product departed from it. The Court found that the applicant had not established a strong prima facie case of infringement, and that the balance of convenience did not favour the grant of an injunction.

Consequently, the Court dismissed the application for an interlocutory injunction.