
The High Court of Australia has followed the US Supreme Court in unanimously declaring that naturally-occurring DNA sequences – even when extracted from the cell nucleus and isolated by human intervention – cannot, in themselves, be validly the subject of patent protection. In particular, all seven High Court judges found that claims 1-3 of Myriad Genetics’
Australian patent no. 686004, each of which is directed to isolated nucleic acid molecules corresponding with the BRCA mutation associated with increased breast cancer risk, are invalid because they do not define a patent-eligible ‘manner of manufacture’ under Australian law:
D'Arcy v Myriad Genetics Inc [2015] HCA 35.
In arriving at this ruling, the High Court has reversed the decisions of six Federal Court judges – one at first instance (
Cancer Voices Australia v Myriad Genetics Inc [2013] FCA 65), and five more on appeal to a full bench of the Federal Court (
D’Arcy v Myriad Genetics Inc [2014] FCAFC 115) – all of whom found that nucleic acids, once extracted from a cell and isolated from a complete DNA molecule, are artificially-created products that are chemically, structurally and functionally different from their natural counterparts, and thus patent-eligible.
Furthermore, in reversing last year’s decision of the Full Federal Court, the High Court has (retroactively) made a liar of Australia’s Trade Minister, Andrew Robb. For months, Mr Robb
has been telling anyone who will listen that Australia does not need to extend ‘data exclusivity’ for biologic drugs, because this country provides more extensive patent protection for biological materials than some others. This line has been followed primarily for the benefit of the US negotiators of the Trans-Pacific Partnership Agreement (TPP), who initially wanted the agreement to mandate a minimum 12 years’ data exclusivity.
As recently as 6 October 2015, following finalisation of the TPP after seven years of negotiations,
Mr Robb was talking up Australia’s patent system as a key factor in reaching agreement on the contentious issue of data exclusivity for biologics. Yet, the very next day, the High Court dropped its nuclear bombshell on that argument, by not only replicating the action of the US Supreme Court in declaring isolated naturally-occurring DNA to be unpatentable, but going further in extending this to synthesised biologics – including cDNA – that essentially embody the same ‘information’ existing in the naturally-occurring biological molecule.
Just to be clear, nobody – not even Myriad Genetics – cares that three Australian patent claims directed to the isolated DNA comprising the BRCA mutations have specifically been declared invalid. Quite aside from anything else, the patent has expired, having reached the end of its 20-year term on 11 August 2015. There are also probably very few people who would be greatly concerned that isolated naturally-occurring DNA sequences are not patentable in Australia. It is now widely regarded that the completion of the human genome project, along with the relative ease, speed and low-cost of gene sequencing nowadays, has largely rendered such claims unpatentable for lack of
novelty or
inventive step anyway.
The larger concern with the Australian High Court’s decision for the entire biotechnology industry is likely to be its focus on the information content of the naturally-occurring DNA as ‘an
essential element of the invention as claimed’. This reasoning will create significant uncertainty as to the circumstances under which
any product – whether wholly, or partially, synthesised, and including cDNA – which essentially exists to provide a ‘medium’ for naturally-occurring information, may continue to be regarded as patent-eligible in Australia.