Lockwood Security Products Pty Ltd v Doric Products Pty Ltd

The High Court of Australia considered an appeal concerning a patent for a door lock. The parties were Lockwood Security Products Pty Ltd (the patentee) and Doric Products Pty Ltd. Doric had commenced proceedings alleging unjustified threats of patent infringement, and Lockwood cross-claimed for infringement. Doric also sought revocation of the patent on several grounds, including that the claims were not fairly based on the specification.

The central legal issue before the High Court was whether claims 1-32 of the patent were "fairly based" on the matter described in the complete specification, as required by s 40(3) of the Patents Act 1990 (Cth). This involved determining the correct test for "fair basing" and whether it should incorporate considerations of novelty, inventive step, or technical contribution to the art, or if it was a distinct ground of invalidity.

The High Court held that the grounds of invalidity under s 18 of the Act (relating to novelty and inventive step) are conceptually distinct from the requirements of s 40 (relating to the specification and claims). The Court reasoned that s 40 deals with the form and content of the specification and claims, rather than the inherent patentability of the invention. Therefore, considerations of inventiveness or technical merit are not relevant to the question of fair basing. The Court concluded that the trial judge had erred in finding that the claims were not fairly based on the specification.

The appeal was allowed, and it was declared that claims 1-32 of the patent were fairly based on the matters described in the complete specification. The matter was remitted to the Federal Court for determination of the remaining issues on appeal, including costs and any application to amend the patent.