Australia’s long-running uncertainty over the patentability of software has taken a decisive turn. In early 2026, the High Court of Australia declined to hear an appeal in the closely watched Aristocrat litigation , effectively endorsing a more permissive approach to software patents.
A Landmark Moment in the Aristocrat Saga
The dispute between Aristocrat Technologies and the Commissioner of Patents has shaped Australian law on computer-implemented inventions for years. The turning point came with the Full Federal Court’s 2025 decision (Aristocrat II), which found that Aristocrat’s gaming machine innovations were patentable subject matter.
When the High Court refused special leave to appeal in February 2026, it left that decision undisturbed. All seven judges agreed there was no reason to revisit the Full Court’s reasoning, describing it as a correct application of established principles.
While technically not binding precedent, this refusal carries strong persuasive weight and effectively cements the Full Court’s approach as the governing framework.
A Shift Away from Restrictive Tests
The significance of Aristocrat II lies in its rejection of the previously dominant “two-step test,” which required a software invention to demonstrate an “advance in computer technology.” Instead, the Court returned to a broader and more flexible principle:
• Pure abstract ideas implemented on a computer remain unpatentable; • But where implementation creates an “artificial state of affairs” and a useful result, the invention may qualify for patent protection.
This reframing is widely seen as lowering the threshold for software patentability and aligning software with other technological fields.
A More Innovation-Friendly Landscape
For technology companies—especially in sectors like fintech, gaming, and digital platforms—the decision is a clear positive. It removes a major doctrinal barrier that had excluded many inventions simply because they relied on conventional computing hardware.Importantly, the Full Court emphasised a holistic assessment: inventions must be evaluated as a whole, not by isolating their “inventive” components.
This approach better reflects how modern software innovations actually function—as integrated systems rather than discrete technical advances.
The Catch: IP Australia’s Practice
Despite the apparent legal clarity, many have raised a concern: the law may have changed faster than administrative practice.Following the 2025 decision, IP Australia updated its Patent Manual but signalled that it would continue applying existing case law frameworks.
Even after the High Court’s refusal of special leave, the agency has continued consulting on how its examination guidelines should evolve. This creates a potential disconnect:
• Courts have endorsed a broader, more permissive test; • Examiners may still apply more conservative interpretations in practice.
In theory, the legal environment is now more favourable than it has been in years. In practice, however, applicants may still face challenges: • Persuasion burden: Applicants and their advisers may need to actively argue how Aristocrat II should be applied during examination. • Inconsistent outcomes: Until IP Australia fully aligns its guidelines, decisions may vary between examiners. • Evolving guidance: Ongoing consultation suggests that further changes to examination practice are still coming. In short, while the door has been opened, it is not yet frictionless. What This Means for Innovators The decision signals a broader policy shift toward supporting innovation in software and digital technologies. However, businesses should take a strategic approach: • Draft claims that clearly demonstrate a practical, useful result • Frame inventions as integrated systems, not abstract ideas • Be prepared to engage actively with examiners on legal interpretation
In theory, the legal environment is now more favourable than it has been in years. In practice, however, applicants may still face challenges: • Persuasion burden: Applicants and their advisers may need to actively argue how Aristocrat II should be applied during examination. • Inconsistent outcomes: Until IP Australia fully aligns its guidelines, decisions may vary between examiners. • Evolving guidance: Ongoing consultation suggests that further changes to examination practice are still coming. In short, while the door has been opened, it is not yet frictionless. What This Means for Innovators The decision signals a broader policy shift toward supporting innovation in software and digital technologies. However, businesses should take a strategic approach: • Draft claims that clearly demonstrate a practical, useful result • Frame inventions as integrated systems, not abstract ideas • Be prepared to engage actively with examiners on legal interpretation