If you are looking to file a patent in Australia, understanding the process from start to finish can save you time, money and frustration. This step-by-step guide walks you through how to file a patent in Australia in 2026 — covering the different application types, IP Australia requirements, key timelines and costs.
What Is a Patent and Why File in Australia?
A patent is a legal right granted by the government that gives you exclusive control over how your invention is made, used, sold or imported for a set period — typically 20 years for a standard patent. In Australia, patents are granted by IP Australia, the government agency responsible for administering intellectual property rights under the Patents Act 1990.
Filing a patent in Australia protects your invention from being copied or commercialised by others without your permission. For businesses and individual inventors alike, a patent can be a critical commercial asset — enabling licensing, attracting investment, and preventing competitors from copying your idea.
Types of Patent Applications in Australia
Before you file, you need to choose the right type of patent application. Australia offers three main patent types under the Patents Act 1990:
1. Provisional Patent Application
A provisional patent application is the most common starting point for inventors in Australia. It gives you a 12-month priority date from your filing date — during which you can develop your invention, seek investors and assess commercial viability — without fully committing to a complete patent specification. A provisional application is not examined or granted; it simply establishes priority and buys you time. Cost: from AUD $110 (IP Australia fee) for individuals/small entities.
2. Standard (Complete) Patent Application
A standard patent application provides protection for up to 20 years from the filing date. It requires a complete patent specification including claims, abstract, drawings and description. Standard patents go through a formal examination process by IP Australia before grant. If filing from a provisional, the complete application must be filed within 12 months of the provisional priority date. Cost: IP Australia examination fee from AUD $490.
3. PCT (Patent Cooperation Treaty) Application
A PCT application (via the Patent Cooperation Treaty) allows you to file a single international application that covers 157 member countries, including Australia. It is the most cost-effective route for inventors seeking patent protection across multiple countries. The PCT provides an 18-month window from your priority date before you need to enter individual national/regional phases. Australia is a receiving office for PCT applications. Filing via PCT is common for startups and businesses with international commercialisation plans.
How to File a Patent in Australia: Step-by-Step
Step 1 — Search Existing Patents
Before filing, conduct a patent search using IP Australia’s patent database (AusPat) and the global PATENTSCOPE database. A search reveals whether your invention is novel (i.e., not already patented or publicly disclosed). Novelty is a core requirement for patent grant — filing without searching first is a common and costly mistake.
Step 2 — Prepare Your Patent Specification
The patent specification is the most technically demanding part of the process. It must describe your invention in sufficient detail that a person skilled in the relevant field could reproduce it. Key elements include: a description of the invention, patent claims (defining the scope of protection), drawings or diagrams (if applicable), an abstract and a title. The claims are the most legally important part — they define exactly what is protected. Most applicants use a patent application drafting service to ensure claims are correctly structured and maximally protective.
Step 3 — File Your Provisional Application (Optional but Recommended)
For most inventors, the process starts with a provisional application. This can be filed online via IP Australia’s eServices portal. Filing a provisional is faster and cheaper than a complete application, and it locks in your priority date — the date from which novelty and inventiveness is assessed. You have 12 months from this date to file a complete application (or enter the PCT system).
Step 4 — File Your Complete (Standard) Application
Within 12 months of your provisional, you must file a complete patent application to proceed toward grant. The complete application includes your full patent specification and claims. IP Australia will review the formalities before sending the application to examination. You can also file directly with a complete application (bypassing provisional) if your invention is fully developed.
Step 5 — IP Australia Examination
Once a complete application is filed, examination must be requested (by the applicant or within 5 years). IP Australia examiners assess whether your invention meets the requirements of novelty, inventiveness, usefulness, and proper description. Examiners may raise objections (adverse reports) that need to be addressed through written submissions or amendments to claims. This stage typically takes 12–24 months.
Step 6 — Publication
Your application will be published in the Australian Official Journal of Patents approximately 18 months after your earliest priority date (provisional filing date). From this point, your application is publicly visible — and any third parties can review and oppose the patent during a 3-month opposition window after acceptance.
Step 7 — Acceptance and Grant
Once examination is complete and any objections resolved, IP Australia will accept the application. After the 3-month opposition period closes without opposition (or any opposition is resolved), the patent is granted. Annual renewal fees are due from the 4th anniversary of the filing date. ipReNewAl manages patent renewal fees for clients across Australia and 180+ countries.
How Long Does It Take to Get a Patent in Australia?
The timeline varies depending on the application type and examination workload:
- Provisional to acceptance: Typically 3–5 years from provisional filing date (including the 12-month provisional period)
- Expedited examination: IP Australia offers expedited examination for eligible applications — reducing examination time to as little as 12 months
- PCT national phase entry: Applications entering the national phase via PCT must do so by 31 months from the priority date
How Much Does It Cost to File a Patent in Australia?
Patent filing costs in Australia include both IP Australia government fees and professional fees if you use a patent attorney or filing service. Key IP Australia fees (2026) include:
- Provisional application filing fee: AUD $110 (standard) / AUD $55 (individual/small entity)
- Standard complete application fee: AUD $370 (standard) / AUD $185 (individual/small entity)
- Examination request fee: AUD $490 (standard) / AUD $245 (individual/small entity)
- Annual renewal fees (from year 4): AUD $300–$1,600+ depending on year
Professional drafting and prosecution fees vary depending on complexity — typically AUD $3,000–$10,000+ for a full-service application. Filing directly via IP Australia eServices is possible without a patent attorney, but the quality of claims drafting significantly affects the scope of protection you receive.
Do You Need a Patent Attorney in Australia?
You are not legally required to use a patent attorney or registered patent agent to file a patent in Australia. However, the patent specification — particularly the claims — is a highly technical legal document. Poorly drafted claims can result in narrow protection that is easily designed around by competitors, or rejection during examination. Most commercial applicants use a professional patent drafting service to maximise the scope and strength of their protection.
Provisional vs Standard Patent: Which Should You File?
For most inventors and businesses, a provisional application is the right starting point. It is faster, cheaper, and secures your priority date while you refine the invention, seek funding or test the market. If your invention is fully developed and you are ready to proceed immediately, you can file a complete application directly. The provisional-to-complete pathway is the most common route to patent grant in Australia.
International Patent Protection: PCT and Beyond
If your target market extends beyond Australia, consider filing a PCT application to cover multiple countries in a single step. Key international patent offices (USPTO for the US, EPO for Europe, JPO for Japan, CNIPA for China) can all be designated in a PCT application. ipReNewAl assists with international patent filing and renewal across 180+ countries.
Frequently Asked Questions: How to File a Patent in Australia
Can I file a patent in Australia myself?
Yes. IP Australia allows self-filing (known as “self-represented applicants”) through the eServices online portal. However, patent claims drafting is technically and legally complex — professional assistance significantly improves the quality and breadth of protection achieved.
What can be patented in Australia?
To be patentable in Australia, an invention must: (1) be a manner of manufacture, (2) be novel (not publicly disclosed before the priority date), (3) involve an inventive step (not obvious to a person skilled in the field), (4) be useful, and (5) not have been secretly used in Australia prior to filing. Software, business methods, biotech inventions and chemical compositions can all potentially be patented in Australia, subject to specific legal requirements.
How long does an Australian patent last?
A standard patent lasts up to 20 years from the filing date, subject to annual renewal fees. There is no longer an innovation patent in Australia — this type was abolished in 2021.
What is a patent priority date?
The priority date is the earliest filing date associated with your application — typically the date your provisional was filed. Novelty and inventiveness are assessed against prior art existing before your priority date. Earlier is always better when it comes to priority dates.
How do I file a PCT application from Australia?
PCT applications from Australia are filed through IP Australia as the receiving office via the eServices portal. You must have a qualifying prior application (such as a provisional) and file the PCT within 12 months of your priority date. The application then enters an 18-month international phase before national phase entry decisions are required.
Related Reading
- Provisional vs Complete Patent Application in Australia — understand the difference and choose the right application type for your invention
- How Much Does It Cost to File a Patent in Australia in 2026? — full breakdown of IP Australia fees and attorney costs
Get Help Filing Your Patent in Australia
ipReNewAl provides professional patent application drafting and patent filing services for inventors and businesses across Australia and internationally. Whether you are starting with a provisional, filing a complete application or entering the PCT system, our experienced IP professionals ensure your application is correctly structured and maximally protected. Contact us today for a free quote.
