PCT National Phase in Australia: 7 Essential Steps

If your international application lists Australia as a market, the route in is narrow and the deadline is specific. Entering the PCT national phase in Australia is how a single international (PCT) filing becomes a pending Australian patent application before IP Australia. Settle one point immediately: Australia is not a member of the European Patent Convention, so there is no validating a European patent here and no European shortcut — it needs its own national-phase entry. The deadline is 31 months, not the 30 you may be used to elsewhere, and examination does not start until you ask for it. Here is the sequence, with the dates and fees that cost applicants their rights when they slip.

PCT National Phase in Australia: The 31-Month Deadline

This is the single most important number in the article. The Australian national phase must be entered by 31 months from the earliest priority date of the international application. That extra month over the common 30-month deadline is a genuine quirk of the Australian system — useful, but not an invitation to drift.

You enter by filing the national-phase request with IP Australia and paying the fee. The international application you already filed becomes, on entry, a standard patent application examined under the Patents Act 1990.

Late entry is possible but discretionary: you must ask the Commissioner to extend, explain the delay, and pay additional fees, with no guarantee of success. Treat 31 months as the real deadline and extensions as an emergency measure you never plan around.

No European Route: Australia Files Nationally

It is worth stating plainly because the mistake is common. Australia is outside the European patent system, so a granted European patent gives you nothing here, and the Unified Patent Court has no reach into Australia. There is no validation step to extend a European grant across the world.

The comparison that actually helps is with the other non-EPC markets you may be entering in parallel. Entering the PCT national phase in Japan or filing a patent in Canada each works the same way: a national filing with its own deadline. Australia belongs in that group — plan a national-phase entry, not a validation.

Request Examination — It Is Not Automatic

Entering the national phase does not put your application in the examination queue. Examination of a standard patent in Australia must be requested, and if you never request it the application lapses.

In practice you must request examination within two months of a direction from IP Australia, or within five years of the international filing date, whichever comes first. IP Australia issues directions when it is ready, but the five-year outer limit is yours to diarise. Once examination begins, expect reports on novelty, inventive step and manner of manufacture — Australia’s subject-matter test — much as in any major jurisdiction.

After the first examination report, you have 12 months to get the application in order for acceptance. Keep claim sets disciplined; drawn-out prosecution burns both time and fees.

The Innovation Patent Is Gone — Standard Patents Only

If you have read older guides, ignore their advice about Australia’s fast, cheap innovation patent. That right has been abolished. No new innovation patent could be filed with a filing date on or after 26 August 2021, and a PCT application cannot enter the Australian national phase as an innovation patent.

What remains is the standard patent, with a term of up to 20 years from the filing date (pharmaceutical substances can qualify for an extension of term). For national-phase applicants, that simplifies the choice: you are filing a standard patent, full stop.

• Deadline: enter the national phase by 31 months from the earliest priority date.
• Examination: request it within five years of the international filing date, or two months of a direction, whichever is first.
• Right available: standard patent only — the innovation patent is closed to new filings.

What It Costs: IP Australia Fees

Australian government fees are moderate but they stack across the life of the application: a national-phase entry fee, an examination request fee, excess-claim fees above a threshold, an acceptance fee, and annual renewal (continuation) fees. Professional fees for responding to examination reports are usually the larger line item.

Renewal fees fall due annually from the fourth anniversary of the international filing date and escalate over time, so a long-held patent costs more to keep each year. Miss a renewal and you enter a grace period with a surcharge; miss that and the patent ceases. A reliable docketing system is not optional.

Australia does not run a US-style small-entity discount, so model the full fee schedule when you budget. If Australia is a defensive-only market, decide whether twenty years of renewals justify the entry.

Entry-Time Housekeeping: Priority, Amendments and the PPH

National-phase entry is not just a form and a fee. It is the moment to get the application’s foundations right, because errors here are expensive to fix later.

First, check the priority chain. If your earliest priority date is more than 31 months back because an earlier deadline slipped, Australia recognises restoration of the right of priority in defined circumstances, but you must raise it at entry rather than hope it is overlooked. Second, consider voluntary amendments: you can bring the claims into a sensible shape on entry, which can shorten later examination. Third, if the application was filed in a language other than English, a translation is required, and accuracy matters because the English text is what gets examined.

One option worth weighing is the Patent Prosecution Highway (PPH). If a corresponding application has already been found allowable in another office, the PPH can accelerate Australian examination and reduce back-and-forth. It is not right for every case, but for applicants who already hold a favourable report elsewhere it can save months. Decide these points at entry, not after the first report lands.

After Acceptance: Opposition and Grant

When IP Australia accepts the application, acceptance is advertised and a three-month window opens in which third parties can oppose grant. Pre-grant opposition is a real feature of the Australian system, more commonly used than in some jurisdictions, so a competitor who has been watching your application can force a contested hearing before you ever hold the patent.

If no opposition is filed, or you survive one, the patent proceeds to grant. From there it is enforceable — but, as always, only as good as the court that will hear a dispute.

Where Australian Patents Are Enforced: The Federal Court

Patent infringement and validity in Australia are decided principally by the Federal Court of Australia, which has national jurisdiction, with appeals to the Full Federal Court and ultimately, by special leave, the High Court of Australia. A validity challenge is typically run as a cross-claim in the same proceeding, so infringement and validity are resolved together.

The Federal Court can grant injunctions, award damages or an account of profits, and its orders run across the country. For a commercially important Australian market, factor the enforcement forum into strategy early rather than treating it as a problem for later.

If enforcement is realistic, line up local support before you need it. Our teams assist rights holders across Australia, including Sydney and Melbourne, and you can compare the full national picture in our guide to filing a patent in Australia.

Enter the Australian National Phase on Time

PerspireIP helps foreign applicants and in-house teams enter the PCT national phase in Australia and prosecute to grant — timing the 31-month entry, requesting examination, docketing renewals and preparing for Federal Court enforcement. Explore our Australia services hub, our local support in Sydney and Melbourne, or contact our team to map out your entry.

This article is general information, not legal advice; consult a qualified attorney for your situation.

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