What Happens During the Trademark Opposition Period in Australia?

Your trademark application has been examined and accepted. It feels like the finish line — but there's one more hurdle before your brand is officially registered: the opposition period. For two months, anyone in the marketplace can formally challenge your right to that mark, and understanding this stage properly can be the difference between a smooth registration and a costly, drawn-out dispute.

This guide walks through exactly what happens once your application is advertised, who can step in to oppose it, the formal stages a dispute goes through, and what to do whether you're the applicant defending your mark or a business considering a challenge of your own.

What Is the Trademark Opposition Period?

Once IP Australia examines and accepts a trademark application, it doesn't go straight to registration. Instead, the accepted mark is published in the Australian Official Journal of Trade Marks, giving the wider business community a chance to review it before it becomes enforceable.

The opposition period is this formal window following publication. It exists so that businesses with a genuine, competing interest — rather than IP Australia itself — can raise concerns about a mark that might conflict with their own brand, mislead consumers, or otherwise fail to meet the legal requirements for registration.

When Does the Opposition Period Start and How Long Does It Last?

The clock starts ticking the day an accepted application is advertised in the Trade Marks Journal, not the day it was filed or examined. From that publication date, third parties have a strict two-month window to lodge a Notice of Intention to Oppose.

This deadline is generally firm. Extensions are possible in limited circumstances — for example, where a party is negotiating a settlement — but they're the exception, not the rule. If the two months pass with no notice filed, the application moves toward registration automatically.

Who Can Oppose a Trademark Application?

Almost anyone can file a notice of intention to oppose — Australian law doesn't require the opponent to already hold a registered trademark. In practice, oppositions tend to come from:

• Owners of an earlier registered or pending trademark that's identical or deceptively similar
• Businesses with a strong unregistered (common law) reputation in a similar name
• Parties who believe the applicant filed in bad faith, such as attempting to block a name they know belongs to someone else
• Anyone who considers the mark descriptive, deceptive, or otherwise incapable of functioning as a trademark

Common Grounds for Opposition

Every opposition must be based on specific legal grounds set out in the Trade Marks Act 1995 (Cth). The most frequently relied-upon grounds include:

• Similarity to an existing mark — the new application is substantially identical or deceptively similar to a mark already registered for similar goods or services.
• Prior use — the opponent had already been using a similar mark before the applicant's filing date, giving them an earlier claim.
• Lack of distinctiveness — the mark is too generic or descriptive to distinguish one trader's goods from another's.
• Likely to deceive or confuse — consumers could reasonably mistake the applicant's goods or services for the opponent's.
• Bad faith filing — the application was made with an improper motive, such as blocking a competitor.

Some of these overlap heavily with the reasons an application can be knocked back during examination in the first place — it's worth reviewing our rundown of the common reasons applications get rejected to see how examination issues and opposition grounds often stem from the same underlying conflicts.

Step by Step: How a Trademark Opposition Unfolds

If someone does decide to challenge an application, the dispute follows a fairly structured path through IP Australia:

1. Notice of Intention to Oppose

The opponent files this notice within the two-month window, formally flagging that a dispute is coming. This step alone pauses the application's progress toward registration.

2. Statement of Grounds and Particulars

Within one month of the notice, the opponent must file a detailed statement setting out exactly which legal grounds they're relying on and the facts supporting each one.

3. Cooling-Off Period

Both parties can request a cooling-off period, pausing formal proceedings for up to several months, to allow settlement discussions, licensing negotiations, or a possible withdrawal by either side.

4. Evidence Stage

If no settlement is reached, both sides file evidence in rounds — evidence supporting the opposition, evidence in answer from the applicant, and evidence in reply from the opponent.

5. Hearing and Decision

A hearing officer at IP Australia reviews the evidence and submissions, then issues a written decision either dismissing the opposition (allowing registration to proceed) or upholding it (refusing the application, in whole or in part).

What Happens If No One Opposes Your Trademark?

For most applicants, this is exactly what occurs — the majority of accepted applications sail through the opposition period without a single challenge. Once the two months pass without a notice being filed, IP Australia proceeds to register the mark, and you receive a certificate of registration confirming exclusive rights across Australia for ten years, renewable indefinitely.

Responding to an Opposition: What Applicants Should Do

If a notice does land, it's not the end of the road — plenty of oppositions are resolved without ever reaching a hearing. Practical next steps typically include:

• Reviewing the statement of grounds carefully to understand exactly what's being disputed
• Assessing whether the opponent's claim has genuine legal merit or is more of a negotiating tactic
• Considering a coexistence arrangement, consent letter, or amended specification of goods and services
• Gathering evidence of your own use, reputation, or distinctiveness to support your position
• Meeting every procedural deadline — missing one can mean losing the application by default

In many cases, a negotiated outcome is far cheaper and faster than fighting through to a hearing. Some disputes are resolved through a formal coexistence deed or consent agreement between the parties — a task best handled through tailored trademark agreement drafting for Perth businesses so the terms are enforceable and clearly documented. Where the dispute is resolved by allowing limited use under agreed conditions instead, a properly structured licence matters — something we help set up through trademark licensing arrangements for Perth-based businesses and clients Australia-wide.

Costs and Timeframes to Expect

A fully contested opposition — from notice to final decision — can easily run beyond a year, and legal costs escalate the further a dispute progresses. This is precisely why early resolution, or avoiding opposition altogether, tends to be the more sensible commercial path.

Reducing the Risk of Opposition Before You File

The most effective way to deal with a trademark opposition is to never face one in the first place. A few habits go a long way:

• Run a thorough trademark search before filing to identify potential conflicts while there's still time to adjust your approach
• Choose distinctive branding rather than descriptive or generic wording wherever possible
• File promptly once you've settled on a name, since Australia operates on a first-to-file basis
• Keep an eye on the Journal after filing, so you're not blindsided if a rival application appears near yours

Getting clarity on foundational concepts also helps — many disputes trace back to confusion over the difference between a business name and a trademark, which leaves some brand owners assuming they're protected when they aren't.

Life After the Opposition Period

Once your mark clears opposition and registers, the work of protecting your brand isn't finished. Ongoing obligations and opportunities include:

• Staying on top of keeping your trademark renewal on track every ten years to avoid an accidental lapse
• Continuing to monitor the Journal for future conflicting filings, since registration doesn't stop new applications from being lodged
• Considering how your registered mark supports wider commercial plans, particularly for brand protection for online and e-commerce businesses operating across multiple states

A registered trademark that's successfully passed through opposition is a genuinely strong commercial asset — one that can be licensed, assigned, or defended with real legal weight behind it. If ownership ever needs to change hands, such as during a business sale or restructure, trademark assignment support for Perth business owners ensures the transfer is documented correctly and holds up legally. And where a brand sits alongside proprietary inventions or processes, pairing it with patent consulting for Perth-based innovators rounds out a genuinely complete IP protection strategy.

Frequently Asked Questions

Whether you're waiting out your own opposition period or considering a challenge against a newly published mark, getting the timing and strategy right matters. Speak with our team for tailored guidance on your specific situation — see the "Free Trademark Check" panel alongside this article.