Neurizon Pty Ltd v Jupiters Limited

Neurizon Pty Ltd brought an action against Jupiters Limited, seeking a declaration that certain claims of their patent were valid and enforceable, and that the latter had infringed them. The respondents counterclaimed for revocation of the patent, alleging that the invention was obvious at the priority date. Neurizon argued that the court should follow a previous decision by Dowsett J on the patent and not overturn it without strong additional evidence. The court had to decide whether the earlier decision on the construction of the patent claims should be binding and whether the respondents had provided sufficient evidence to show that the invention was obvious.

The court found that it was necessary to consider the earlier decision on the construction of the patent claims in light of the respondents' submissions. The court held that a person skilled in the art would need knowledge of the electronic gaming industry, jackpot systems, and regulations at the priority date, as well as some understanding of data communication and computer software. The court concluded that it was not essential for the person to have experience in implementing jackpot systems. The court also found that the respondents had not provided sufficient evidence to show that the invention was obvious.

The court dismissed the respondents’ cross-claim, ordered them to pay the applicant’s and second cross-respondent’s costs, and adjourned the issues of injunctions and damages to a later date. The court held that the earlier decision on the construction of the patent claims should be followed, unless the second judge was convinced that it was wrong, to encourage consistency in judicial decision-making and confidence in the law. The court found that the respondents had not provided strong additional evidence to overturn the earlier decision and that the invention was not obvious at the priority date.