F.H. Faulding & Son Ltd v Imperial Chemical Industries of Australia and New Zealand Ltd

The parties to this appeal were F.H. Faulding & Son Ltd (the appellant) and Imperial Chemical Industries of Australia and New Zealand Ltd (the respondent). The dispute concerned the respondent's alleged infringement of the appellant's patent for a process for the manufacture of a pharmaceutical product. The High Court of Australia was tasked with determining the validity of the appellant's patent and whether the respondent's manufacturing process constituted an infringement.

The central legal issues before the High Court were whether the patent claimed a valid invention, specifically whether it possessed the necessary novelty and inventive step, and if so, whether the respondent's process fell within the scope of the patent claims. The court was required to interpret the patent specifications and compare the appellant's patented process with the respondent's allegedly infringing process.

The High Court, in its judgment, considered the principles of patent law relating to novelty and inventive step. It analysed the prior art to determine if the invention claimed in the patent had been disclosed or made obvious before the patent's filing date. The court also examined the claims of the patent to ascertain their breadth and whether the respondent's process, by its nature and operation, performed the same function in substantially the same way to achieve the same result as the patented invention. The court ultimately found that the patent was valid and that the respondent's process did indeed infringe the patent.