Schulke & Mayr GmbH v Ecolab USA Inc

Schulke & Mayr GmbH (Schulke) and Ecolab USA Inc (Ecolab) were parties to proceedings in the Federal Court of Australia. The dispute concerned the validity and infringement of Australian Patent No 2009270076 (the Patent), which claimed a disinfectant composition and a method of disinfecting. Schulke, the patentee, alleged that Ecolab's products infringed the Patent, while Ecolab sought to have the Patent declared invalid.

The primary legal issues before the Court were whether the Patent was valid, specifically in relation to the grounds of lack of novelty and inventive step, and whether Ecolab's accused products infringed the claims of the Patent. The Court was required to consider the scope of the patent claims and compare them with the prior art and the features of Ecolab's products.

Justice McDonagh found that the Patent was invalid for lack of inventive step. His Honour's reasoning focused on the interpretation of the patent claims and the assessment of whether the claimed invention would have been obvious to a person skilled in the art in light of the cited prior art. The Court applied established principles of patent law concerning novelty, inventive step, and claim construction, ultimately concluding that the invention as claimed was not a patentable invention.

Consequently, the Court ordered that Australian Patent No 2009270076 be revoked and that Ecolab's cross-claim for a declaration of invalidity be dismissed as academic, given the finding of invalidity.