Patent Litigation in Australia: 6 Proven Steps to Win

You hold an Australian patent, a competitor is selling something that looks a lot like your invention, and you want to know what enforcement actually involves. Patent litigation in Australia is centralised, specialised, and faster than many foreign owners expect — but it carries real traps, including a threats provision that can turn the tables on you before you file. Here is how the system works and the six steps that decide who wins.

How Patent Litigation in Australia Works

Australian patents are governed by the Patents Act 1990 (Cth), and almost every dispute of substance is heard by the Federal Court of Australia. There is no jury: a single judge decides both the facts and the law. That one feature shapes everything — cases turn on expert evidence and construction arguments rather than on persuading a lay panel.

The court has national reach. A judgment from the Federal Court binds across every state and territory, so you sue once, not state by state. Infringement and validity are almost always decided together in the same proceeding, which is why a defendant who is accused of copying will usually respond by attacking the patent itself.

Because the same judges hear these matters repeatedly, the Federal Court runs a specialist patents practice with its own case-management procedures and a docket of judges experienced in technical evidence. For a foreign owner used to the fragmented, country-by-country national courts of Europe, that concentration is a genuine advantage — one forum, one body of precedent, one judgment that reaches the whole market.

The patent itself is granted by IP Australia, the national office, but IP Australia does not decide infringement. Once a patent is granted and you want to enforce it, the dispute moves out of the office and into the Federal Court — a clean separation between examination and enforcement that is worth understanding before you plan a case.

Which Court Hears Your Case

The Federal Court is the forum for standard-patent infringement and revocation. Appeals go to the Full Federal Court (a bench of three judges), and from there to the High Court of Australia — but only if the High Court grants special leave, which it does sparingly. In practice the Full Court is the last word in most disputes.

1. First instance: a single judge of the Federal Court of Australia.
2. Appeal: the Full Federal Court, usually three judges, hearing the matter afresh on the record.
3. Final appeal: the High Court of Australia, only by special leave on a point of general importance.

Appeals from decisions of the Commissioner of Patents — for example, on an opposition during prosecution — also land in the Federal Court, so the same bench sees disputes at every stage of a patent’s life.

Infringement and the Revocation Cross-Claim

To make out infringement you must show the competitor has taken every essential feature of at least one claim, read purposively. Supplying a product that others use to infringe can also expose a party under the Act’s contributory-infringement rules, which matters when you are chasing a component maker rather than the end seller.

Expect the defence to come straight back with a cross-claim for revocation under section 138 of the Act. Any person can seek revocation — there is no standing requirement — and the usual grounds are lack of novelty, no inventive step, and failure to meet the support and clarity requirements that came in with the Raising the Bar reforms. A patent that survives this counterattack is far more valuable afterwards; one that does not is gone.

Claim construction is decided by the judge as a matter of law, applying a purposive reading informed by the specification and the common general knowledge in the field at the priority date. Small wording choices made years earlier in drafting routinely decide these fights, which is why the construction stage, not the factual comparison, is where most Australian cases are really won or lost.

This is why clearance and a hard-nosed validity review belong before you sue, not after. We cover that discipline in our guide to the patent invalidation search, and it is the single best predictor of how one of these cases ends.

The Innovation Patent Is Gone — Plan Around It

Australia used to offer a second-tier “innovation patent” with a lower threshold — an innovative step rather than an inventive step — and a fast grant, which made it a favourite enforcement weapon. That right was closed to new filings from 26 August 2021. You can no longer obtain one.

The standard patent is now the only route to enforceable patent protection in Australia. Innovation patents filed before the cut-off remain in force until they expire, so a handful can still be asserted for a few more years, but your filing strategy today should assume the standard patent and nothing else.

If you are only now entering the Australian market, start with our guides on how to file a patent in Australia and the PCT national phase in Australia before you think about enforcement.

Remedies, Damages, and Costs

A successful patentee can obtain a final injunction to stop the infringing conduct, plus a monetary award. Here you choose: either damages to compensate your loss, or an account of the infringer’s profits — you cannot have both, and the election usually waits until liability is decided and you can see the numbers.

• Final injunction restraining further infringement.
• Damages or an account of profits, at the patentee’s election.
• Additional damages where the infringement was flagrant or deliberate.
• Costs, which ordinarily follow the event — the loser pays a large share of the winner’s legal costs.
• Interlocutory injunctions early in the case, where damages would not be an adequate remedy and the balance of convenience favours you.

The costs rule cuts both ways. Winning recovers much of your spend; losing means paying a slice of the other side’s. It is a powerful settlement lever and a reason to be sure of your ground before filing.

Timeline, Cost, and the Unjustified-Threats Trap

A contested patent case typically runs somewhere between eighteen months and two and a half years to a first-instance judgment, driven by discovery, expert reports on both infringement and validity, and a trial that is often measured in weeks. Budgets are substantial; this is not a forum for a thin case.

The trap that catches foreign owners is the unjustified-threats provision in section 128. If you send a competitor — or worse, its customers — a threatening letter and cannot back it with infringement, the recipient can sue you for the damage your threat caused and get its own injunction. A badly drafted cease-and-desist can hand your opponent the first strike. Get the letter reviewed before it goes out.

Litigation in nearby jurisdictions follows very different rules; compare the approach in our guides to patent litigation in Japan and patent litigation in Canada if your dispute spans more than one country.

How PerspireIP Can Help

Before you enforce in Australia, you need to know your patent will survive the inevitable revocation cross-claim. PerspireIP runs the invalidity and prior-art analysis that tells you whether your claims hold, and the infringement reads that tell you whether the competitor is truly caught — the two reports that decide these cases. Explore our Australia services or contact our team to scope your matter.

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