High Court refuses special leave to the Commissioner of Patents for patentability of computer‑implemented inventions in Aristocrat ’25

05 February 2026
Insights Photo
Insights Photo
Today, the High Court of Australia has dismissed an application for special leave to appeal from Aristocrat Technologies Australia Pty Ltd v Commissioner of Patents [2025] FCAFC 131 (“Aristocrat ’25”).
Mark Williams headshot
Mark Williams
Special Counsel

Now that special leave has been refused, the test relating to the patentability of computer‑implemented inventions is largely settled by the judgment in Aristocrat ’25.

You can read about the Full Federal Court decision and the test for patentability of computer‑implemented inventions here.

In simple terms, the test is to ask whether, properly characterised, the subject matter alleged to be patentable is: (i) an abstract idea that is manipulated on a computer; or (ii) an abstract idea that is implemented on a computer to produce an artificial state of affairs and a useful result.

The practical application of the test by the Commissioner of Patents (and, in turn, by Patent Examiners) may require a period of bedding down as examination practice adjusts to the Full Court’s reasoning.

If you have any questions about the patentability of computer‑implemented inventions in Australia, please contact Mark J Williams.

Related news and insights

Insights Photo

High Court refuses special leave to the Commissioner of Patents for patentability of computer‑implemented inventions in Aristocrat ’25

Today, the High Court of Australia has dismissed an application for special leave to appeal from Aristocrat Technologies Australia Pty Ltd v Commissioner of Patents [2025] FCAFC 131.
Mark Williams

5 February 2026

Insights Photo

Innovations in the Semiconductor Industry: An Australian Perspective

Patent filing trends show that semiconductor-related patent activities in Australia are concentrated in specialist applications, namely, photovoltaics (PV) and quantum technologies.
Dr Winney Yang

19 December 2025

Insights Photo

Advance in Computer Technology Not Required: A Win for Computer Implemented Inventions in Australia

Three years ago, the High Court’s equal division in Aristocrat Technologies Australia Pty Ltd v Commissioner of Patents [2022] HCA 29 (reported here) left Australia without binding guidance on the patentability of computer implemented inventions.
Helen McFadzean

17 September 2025

Insights Photo

Trustee’s ‘Inherited Financial Circumstances’ Insufficient to Justify Extension of Time Request

In the recent decision of Aqua HD [2025] APO 2, the Delegate denied a request for an extension of time made by a patent applicant’s trustee, who had been appointed by the court to wind down the company following insolvency proceedings.
Helen McFadzean

17 March 2025

Insights Photo

Tempted to use AI for your IP Advice?

You might be tempted to ask Artificial Intelligence for legal advice. But as we’ve seen from the decision in Valu v Minister for Immigration it’s not a reliable source of information.
Magda Bramante

6 March 2025

Learn more about what matters to our people

We are a curious and approachable team of professionals, united by a passion for IP and helping your ideas succeed.

Banner image
How can we help you?