R v Smith (Commissioner of Patents); Ex parte Mole Engineering Pty Ltd

The High Court of Australia heard an application for a writ of mandamus brought by Mole Engineering Pty Ltd against the Commissioner of Patents. The dispute concerned the Commissioner's refusal to grant a patent for an invention described as a "rotary earth engaging implement." Mole Engineering sought to compel the Commissioner to grant the patent, arguing that the Commissioner had erred in law by refusing to grant the patent.

The central legal issue before the Court was whether the invention, as described in the patent application, was a manner of manufacture within the meaning of section 6 of the Statute of Monopolies, 1623 (Imp), which is the foundational legislation for patentability in Australia. This required the Court to consider the scope of what constitutes a patentable invention, particularly in relation to mechanical devices and processes.

The Court reasoned that the Statute of Monopolies, and by extension Australian patent law, protects inventions that are a "manner of manufacture." This phrase has been interpreted by courts to mean something that is a product of industrial activity, a vendible product, or an improvement in the making of goods. The Court examined the nature of the "rotary earth engaging implement," considering whether it represented a new and useful art, process, method of manufacture, or composition of matter. The Court ultimately held that the invention, being a mechanical device designed for a practical purpose and capable of being manufactured and sold, fell within the established meaning of a "manner of manufacture."

The High Court made absolute the order nisi for a writ of mandamus, directing the Commissioner of Patents to proceed with the grant of the patent application.