Calidad Pty Ltd & Ors v Seiko Epson Corporation & Anor

The High Court of Australia considered an appeal concerning allegations of patent infringement and misleading or deceptive conduct. The appellants, Calidad Pty Ltd and others, were distributors of compatible ink cartridges for Epson printers. They alleged that Seiko Epson Corporation and its Australian subsidiary engaged in misleading or deceptive conduct by representing that the use of non-genuine ink cartridges would void printer warranties, thereby contravening Australian Consumer Law. The respondents, in turn, alleged that the appellants' sale of compatible ink cartridges infringed their patents.

The central legal issues before the High Court were whether the respondents' conduct in asserting their patent rights and in making representations about warranty voiding constituted misleading or deceptive conduct under the Australian Consumer Law, and whether the appellants' compatible ink cartridges infringed the respondents' patents. Specifically, the Court had to determine the scope of the respondents' patent rights and the extent to which their representations regarding warranty limitations were permissible in light of Australian consumer protection legislation.

The High Court found that the respondents had engaged in misleading or deceptive conduct. It held that the respondents' warranty terms, which stated that the use of non-genuine ink cartridges would void the printer warranty, were misleading because they did not adequately qualify this statement. The Court reasoned that the warranty terms should have made it clear that the warranty would only be voided in circumstances where the use of a non-genuine cartridge actually caused damage or malfunction to the printer. The Court also considered the patent infringement claims, but the primary focus of the judgment was on the Australian Consumer Law aspects.

Ultimately, the High Court allowed the appeal in part, finding that the respondents had engaged in misleading or deceptive conduct. The Court varied the orders of the lower courts, confirming that the respondents' warranty terms were misleading and deceptive.