Australia: Genes ruled unpatentable by High Court

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Australia: Genes ruled unpatentable by High Court

The High Court in D'Arcy v Myriad Genetics [2015] HCA 35 has unanimously found that isolated naturally-occurring nucleic acids coding for mutant or polymorphic genes does did not amount to patentable subject matter in Australia.

The Court overturned the findings of all the lower courts judges and diverged from its own expansive earlier authorities on patentable subject matter, preferring instead to follow US Supreme Court authority on the same case.

The court used emotive arguments in attacking the claim breadth. The majority citing "the chilling effect of the claims ... which would lead to the creation of an exorbitant and unwarranted de facto monopoly…". The jurisprudential reasons for having the patent system and the patentee's right to the broadest possible claim were not given significance.

The basis of rejection of the patent further included "the far reaching questions of public policy ... best left for legislative determination". The Court failed to recognise that its own actions are likely to lead to confusion and uncertainty as to the metes and bounds of the "new gene" patent exclusion.

In a manner reminiscent of US Supreme Court practice, a number of judges also incorporated obviousness arguments into the concept of patentable subject matter.

Of course, the net effect is that it is now more difficult to obtain protection for innovative research in the genetics area, likely leading to the serious consideration of secrecy regimes where protection is no longer available.

Peter Treloar


Shelston IPLevel 21, 60 Margaret StreetSydney NSW 2000AustraliaTel: +61 2 9777 1111Fax: +61 2 9241 4666email@shelstonip.comwww.shelstonip.com

more from across site and SHARED ros bottom lb

More from across our site

Maria Peyman, head of IP at Birketts, explains why the firm is adopting a ‘seamless approach’ for clients by integrating two of its practice areas
Matthew Swinn, who leads the firm’s IP practice, discusses why Mallesons is well-placed to remain a major IP force
Lawyers at A&O Shearman analyse developments regarding UPC’s long-arm jurisdiction, including its scope and jurisdictional limits
Michelle Lee discusses reaching milestones at the USPTO, AI’s role in legal work, and how to empower women in tech and IP
Executive chair Matt Dixon, who reveals a new associate hire, says the firm wants to offer a realistic pathway to partnership while avoiding the ‘corporate machine’ route
Mayer Brown’s role in cardiovascular technology dispute reflects how firms are pursuing precedent-setting cases to try and guide AI and patent law
Kevin Mack, Via’s new president, emphasises the importance of collaborative licensing structures and shares how AI tools can help create new lines of business
A Tokyo District Court ruling concerning movie spoilers, and a second chance for VLSI against Intel were also among the top talking points
Practitioners believe new AI tools at the USPTO will not replace lawyers or disrupt revenue, but instead expose where a trademark attorney’s value lies
Leighton Cassidy Legal hopes to leverage its founder's international experience and provide clients with a rare chance to receive litigation and prosecution under one umbrella
Gift this article