The core requirements for a standard patent under the Australian Patents Act 1990 are novelty, inventive step, utility, sufficiency of disclosure, clarity, and patentable subject matter. Each of these is assessed during examination by IP Australia, and a failure on any one of them can result in the application being refused or a granted patent being vulnerable to challenge.
Novelty — the invention must be new
Novelty is perhaps the most fundamental requirement. An invention is considered novel if it has not been disclosed to the public anywhere in the world before the priority date of the patent application. Australia applies an "absolute novelty" standard, meaning that any public disclosure — whether by the inventor, a third party, or anyone else — in any country and in any form can potentially destroy novelty.
The prior art base against which novelty is assessed includes:
- Published patent documents from any country
- Scientific and technical publications, journals, and conference papers
- Online publications, including websites, blogs, and social media posts
- Products that have been sold, demonstrated, or publicly used
- Oral disclosures, such as presentations or conversations without a confidentiality agreement
The novelty test is applied on a document-by-document basis. This means the examiner must find all the essential features of your claimed invention disclosed in a single prior art reference to reject the claim for lack of novelty. A combination of features drawn from multiple sources cannot be used to attack novelty — though it can be used to challenge inventive step.
Novelty is assessed against everything publicly available anywhere in the world before your priority date. Even the inventor's own earlier disclosures can count as prior art.
This is why securing an early priority date by filing a provisional patent application is so important. It establishes the date against which novelty is measured, giving you the strongest possible position.
Inventive step — the invention must not be obvious
Even if an invention is novel, it must also involve an inventive step. This means the invention must not have been obvious to a hypothetical "person skilled in the art" — someone with a good working knowledge of the relevant technical field — based on what was publicly known before the priority date.
Unlike the novelty test, inventive step allows the examiner to combine multiple pieces of prior art. The question is whether a skilled person, aware of the common general knowledge in the field and having access to relevant prior art documents, would have arrived at the invention as a matter of routine development or obvious modification.
Factors that can support inventive step include:
- Unexpected results — the invention produces a surprising or superior outcome compared to existing solutions
- Long-felt need — the problem has existed for some time and others have failed to solve it
- Teaching away — the prior art suggests a different approach, making your solution non-obvious
- Commercial success — the invention achieves significant market adoption, suggesting it was not an obvious development
- Technical prejudice — the skilled person would have been discouraged from pursuing the approach taken by the invention
An invention must be more than just new — it must represent a non-obvious advance over what was already known in the field.
Sufficiency of disclosure — the invention must be fully described
A patent application must describe the invention in sufficient detail to allow a person skilled in the relevant field to reproduce it without undue effort or experimentation. This requirement, known as sufficiency of disclosure, ensures that the patent system delivers on its core bargain — the inventor receives exclusive rights in exchange for disclosing the invention to the public.
In practice, sufficiency means the specification must include:
- A clear explanation of how the invention works
- Enough technical detail for the invention to be reproduced by a skilled person
- At least one practical example or embodiment
- Information about any materials, parameters, or conditions that are necessary for implementation
Insufficient disclosure can be grounds for refusal during examination or for revocation of a granted patent. This is one of the key reasons why thorough preparation and professional drafting are so important when preparing a patent application.
Utility — the invention must be useful
The invention must be useful, meaning it must be capable of achieving the purpose described in the patent application. This is a relatively low threshold in practice — the invention does not need to be commercially successful or the best solution available, but it must work as described.
An invention will fail the utility requirement if it does not produce the results claimed, or if it has no practical application whatsoever. This requirement is primarily intended to prevent patents being granted for speculative or purely theoretical inventions that have no real-world function.
Clarity and support — the claims must be clear
The patent claims — which define the legal scope of the monopoly granted by the patent — must be clear, concise, and supported by the description in the specification. Each claim must define the invention in terms that a skilled person can understand, and must not extend beyond what is actually described and supported in the body of the specification.
Lack of clarity or unsupported claims are common grounds for objection during examination. Well-structured claims, ranging from broad independent claims through to narrower dependent claims covering specific features, provide both scope of protection and fallback positions in case broader claims are challenged.
Patentable subject matter — the invention must be eligible
The invention must fall within the categories of subject matter eligible for patent protection. In Australia, this is assessed under the "manner of manufacture" test, which asks whether the invention provides a practical, technical solution to a problem and produces an artificially created state of affairs of economic significance.
While the scope of patentable subject matter is broad, certain categories are excluded, including abstract ideas, purely artistic works, mathematical models without practical application, and mere schemes or plans. For a detailed discussion of what qualifies and what does not, see our guide to what can be patented.
How these requirements work together
Each of these requirements serves a distinct purpose, but they work together to ensure that patents are only granted for genuine innovations that are properly disclosed to the public. During examination, IP Australia will assess your application against all of these criteria. Objections on any ground must be addressed before a patent can be granted.
Understanding these requirements before you file helps you and your patent attorney prepare the strongest possible application. A thorough description, clear articulation of what is new and non-obvious, and a well-structured set of claims are the foundations of a successful patent application.
If you would like to assess whether your invention meets these requirements, contact Patentec for a complimentary consultation. We can evaluate the patentability of your invention and recommend an appropriate strategy, including whether a prefiling novelty search would be beneficial.