- Blog
- June 17, 2026
If you’ve invented something new and you’re not sure what to do next, the provisional patent application is probably the answer.
It’s not the full patent. It doesn’t give you enforceable rights. And it expires after 12 months. But it might be the smartest first move an Australian inventor can make — and the data backs that up. According to IP Australia’s 2026 report, provisional patent filings surged 58% in 2025, rising from 4,343 to 6,867 applications. That’s a massive jump, and it tells us that more Australian innovators are discovering what many patent attorneys have known for years: the provisional is where good IP strategy begins.
Here’s why.
What a Provisional Patent Application Actually Is
A provisional patent application is a placeholder. It establishes your “priority date” — the date from which your invention will be assessed for novelty and inventiveness. Everything published before your priority date is potential “prior art” that could be cited against your patent. Everything published after it is not.
Think of it as planting a flag. You’re telling the patent system, “I was here on this date, with this invention.”
Once filed, you have 12 months to decide whether to proceed to a complete (standard) patent application. During those 12 months, you can:
- Test your product in the market without risking your patent rights
- Pitch to investors and say “patent pending”
- Refine the invention based on feedback
- Assess the commercial viability before committing to the full cost of a standard patent
- Explore international filing options
That 12-month window is incredibly valuable. It’s essentially a low-cost option on full patent protection.
What It Costs
The IP Australia filing fee for a provisional patent application is $100. That’s it — from the government’s side.
The real cost is in the drafting. The provisional specification is the technical document that describes your invention. While it doesn’t need to include formal patent claims (those come later in the complete application), it does need to describe the invention in sufficient detail.
And here’s a point that doesn’t get emphasised enough: the quality of your provisional specification matters enormously. If you disclose your invention publicly after filing — which most people do — and your provisional specification doesn’t adequately cover what you’ve disclosed, you could find yourself unable to claim patent protection for important aspects of your invention down the track.
With professional drafting by a patent attorney, a provisional patent application typically costs between $3,000 and $7,000 + GST in total (including the government filing fee). We’ve discussed patent costs in more detail in our comprehensive patent cost guide.
What It Doesn’t Do (And Why That’s OK)
We need to be straight with you about the limitations, because misunderstanding them can lead to costly mistakes:
- A provisional application does not give you enforceable patent rights. You cannot sue anyone for infringement based on a provisional alone.
- It is not examined by IP Australia. Nobody reviews it for novelty or inventiveness. That assessment happens later, during examination of the complete application.
- It expires after exactly 12 months. If you don’t file a complete application (or a PCT international application) within that window, the provisional lapses and your priority date is lost.
- “Patent pending” is a signal, not a shield. It tells the market you’re pursuing protection, which has deterrent value, but it doesn’t give you the legal tools to enforce anything yet.
None of these are reasons not to file a provisional. They’re just reasons to understand what it is and plan accordingly. The provisional is a starting point, not a destination.
The 12-Month Clock: What Happens Next
Once you’ve filed, the clock is ticking. Here’s a sensible approach to using those 12 months wisely:
Months 1–3: Test and refine.
Start showing your invention to potential customers, partners, or investors. Gather feedback. Iterate the design if needed. Because you’ve secured your priority date, public disclosure won’t undermine your patent position (assuming your provisional specification adequately covers what you’re disclosing).
Months 4–6: Assess commercial viability.
Is there genuine market demand? Can you manufacture at a viable cost? Are competitors likely to copy you? The answers to these questions should inform whether pursuing a full patent is commercially worthwhile.
Months 7–9: Decide on scope.
If the commercial case is strong, start discussions with your patent attorney about the complete application. Do you need protection only in Australia, or also internationally? If international, the Patent Cooperation Treaty (PCT) route lets you extend your priority date’s reach to over 150 countries.
Months 10–12: File the complete application.
Don’t leave this to the last week. Drafting the complete specification takes time, and you want it done properly. We’ve seen too many inventors remember the deadline on month 11 and rush through a critical legal document. Give your attorney enough lead time to do a thorough job.
Should You Draft It Yourself?
The government fee for a provisional is $100. A patent attorney will charge significantly more than that on top. So the temptation to do it yourself is understandable.
Here’s our honest view: it depends on what’s at stake.
If you’re a serial inventor testing a speculative concept and you understand patent documents, a self-filed provisional can serve as a basic placeholder. But if this invention is commercially important to your business — if you’re planning to invest in tooling, manufacturing, marketing, or if you’re pitching to investors — the quality of the provisional specification matters too much to leave to chance.
A poorly drafted provisional that doesn’t adequately describe the invention is worse than no provisional at all, because it creates a false sense of security. You think you’re protected. You make public disclosures. Then later, when it’s time to file the complete application, your attorney discovers that key aspects of the invention weren’t covered. By then, those public disclosures have become prior art that could be used against you.
We’ve seen this happen. It’s heartbreaking.
Frequently Asked Questions
Can I sell or license my invention while I have a provisional patent?
You can commercialise your invention during the provisional period. Many inventors start selling, pitching, or licensing at this stage. Just be aware that you don’t yet have enforceable patent rights — “patent pending” deters but doesn’t legally prevent competitors from copying.
What if my invention changes during the 12-month period?
This is common, especially for products in development. If the changes are significant, your patent attorney can address them in the complete application. In some cases, it may be advisable to file an additional provisional to cover new aspects. We advise on this on a case-by-case basis.
Can I file a provisional patent application internationally?
A provisional patent application is filed with IP Australia and establishes an Australian priority date. However, that priority date can be used when filing in other countries within the 12-month window, most commonly through a PCT (Patent Cooperation Treaty) application. Our post on taking IP global covers international strategy in more detail.
Is a provisional patent the same as an innovation patent?
No. Innovation patents were a separate, shorter-term form of patent protection in Australia. They’ve been phased out for new applications. The provisional patent application is the first step in the standard patent process and has not been discontinued.