National Research Development Corporation v Commissioner of Patents

The National Research Development Corporation (NRDC) sought to appeal a decision of the Commissioner of Patents to the High Court of Australia. The dispute concerned the patentability of an invention described in an application by the NRDC, which related to a method of controlling the growth of plants by applying certain chemical compounds. The Commissioner had refused to grant a patent on the grounds that the invention was not a manner of manufacture within the meaning of section 6 of the Statute of Monopolies, which was then the relevant legislation governing patentability in Australia.

The central legal issue before the High Court was whether the claimed invention, a method of using chemical substances to influence plant growth, constituted a "manner of manufacture" for the purposes of patent law. This required the court to consider the scope and interpretation of this fundamental requirement for patentability, particularly in the context of chemical processes and their application to living organisms.

The High Court, in a joint judgment delivered by Dixon C.J., Kitto and Windeyer JJ, overturned the Commissioner's decision. The Court held that the invention was indeed a manner of manufacture. Their reasoning focused on the fact that the invention involved the application of chemical knowledge to produce a practical and useful result in the physical world. The Court distinguished between mere scientific discoveries and inventions that embody a practical application of such discoveries, emphasizing that a process that produces a useful physical effect, even if it involves biological or chemical interactions, can be patentable. The principle applied was that an invention is a manner of manufacture if it represents a useful application of scientific knowledge to produce a tangible result or improvement.

The High Court ordered that the appeal be allowed and that the Commissioner of Patents be directed to grant a patent for the invention.