Rescare Ltd v Anaesthetic Supplies Pty Ltd

Rescare Ltd, the plaintiff, sought to enforce a patent against Anaesthetic Supplies Pty Ltd, the defendant, alleging that the latter had infringed the patent by making, using, or selling a device which fell within the scope of the patent claims. The dispute was heard by the Federal Court of Australia. The central issue before the court was whether the defendant's actions constituted an infringement of the patent, and if so, whether the patent itself was valid and enforceable. Another pivotal question was the applicability of the disclosure requirement for the best method of performing the invention, specifically concerning the timing of such disclosure. Furthermore, the court had to determine whether methods or processes for treating the human body are eligible for patent protection under Australian law, particularly in the context of a patent granted under the Patents Act 1952 but challenged under the Patents Act 1990.

The court found that the defendant had indeed infringed the plaintiff's patent by manufacturing, using, or selling the device in question. However, the court also held that the patent was invalid due to a failure to disclose the best method of performing the invention at the appropriate time. The court clarified that, under the 1990 Act, the disclosure of the best method must be made at the time the patent application is filed, and not at a later stage. The court further addressed the issue of patent eligibility, ruling that methods or processes for treating the human body are patentable in Australia, provided they meet the statutory criteria for patentability. The court emphasised the changes in the law of infringement brought about by the 1990 Act, distinguishing it from the 1952 Act and highlighting the importance of compliance with the updated disclosure requirements.

The proceeding was adjourned to allow for the preparation of short minutes to reflect the court's reasons for judgment. The court's decision confirmed that the defendant had infringed the plaintiff's patent, but the patent was ultimately revoked due to the failure to disclose the best method of performing the invention at the correct time. The court's ruling underscored the significance of adhering to the disclosure requirements under the 1990 Act and clarified the patent eligibility of methods or processes for treating the human body in Australia. The final orders of the court were that the proceeding would stand over to a later date for the preparation and filing of short minutes.