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The primary requirements for an (alleged) invention to be patentable are that it must relate to eligible subject matter (e.g. not be a law of nature, mathematical equation or abstract idea), it must be new (i.e. possess
novelty) and it must not be obvious (i.e. must involve an
inventive step).
Subject matter eligibility is currently highly contentious in many jurisdictions. As recent decisions of the US Supreme Court (in the
Alice and
Myriad cases) and the Australian Federal Court (in the
Research Affiliates and
Myriad cases) demonstrate, the most strongly contested subject matter relates to the areas of business processes, computer software and biotechnology.
But even so, qualification as patent-eligible subject matter remains a threshold test, and should not be a substitute for the proper evaluation of an invention for novelty and inventiveness.
The problem with evaluating novelty and inventive step is that it often involves hard work. To show that something is not new, or that it is obvious, requires evidence of
prior art, which in turn may require diligent searching, extensive reading, and careful construction of legal and technical reasoning to explain why the requirements for patentability are not satisfied.
It is, therefore, so much easier if an invention can be knocked out at the first hurdle, and be deemed fundamentally ineligible for patent protection, without having to go to all the trouble of conducting a comprehensive prior art search.
Recent developments in various jurisdictions (e.g. the US, Australia and the UK) suggest that, in ‘difficult’ fields of technology, the cart is getting put before the horse. Subjective evaluations of the ‘merit’ of an invention, i.e. that it perhaps
seems unworthy of patent protection, may be leading decision-makers at all levels to turn too quickly to subject matter grounds as a basis for rejecting claims. Legal reasoning may therefore be developed in order to arrive at the desired outcome, without sufficient regard to consistency across different cases.
Subject matter is becoming a form of ‘obviousness by stealth’ as courts start looking for the ‘inventive contribution’ made by a claimed invention as a basis for assessing eligibility. The case law is becoming increasingly incoherent, as decision-makers try to rationalise their own findings in light of prior decisions that are themselves inconsistent. Certainty is eroded as a result, and applicants, patentees and other stakeholders are losing faith in a system that appears increasingly capricious. I also suspect that the quality of prior art searching may be suffering, with examiners now relying on subject matter rejections in cases that appear ‘too hard’ to search effectively.