Series Killers: When IP Australia Oversteps the (Descriptive) Mark
So you’ve filed a series trade mark in Australia. The marks are visually identical except for a single word that tweaks the service type — say, “BURST PLUMBING”, “BURST CLEANING”, “BURST GARDENING”.
All good, right?
Not if you ask IP Australia. According to the Office Manual, if your differentiating word describes only some of the services listed — even if it’s a totally non-distinctive, snore-worthy adjective — your series could be headed for rejection.
The rationale? That descriptive differences must apply to all of the goods/services claimed. Not some. Not most. All.
But is that legally correct?
Let’s unpack this.
The Law (Actually – and Not the Manual)
Section 51(1) of the Trade Marks Act 1995 (Cth) says you can register a series if:
“…the trade marks resemble each other in material particulars and differ only in respect of one or more of the following matters:
(a) statements or representations as to the goods or services in relation to which the trade marks are used or are intended to be used;
(b) statements or representations as to number, price, quality or names of places; or
(c) the colour of any part of the trade mark.”
So there is a legal restriction — but it’s not about whether the descriptive term applies to all of the goods or services. It’s about whether the difference falls into one of the above three categories.
If your only point of difference is a generic descriptor like “PLUMBING” or “CLEANING” — that’s likely a “statement as to the services” under paragraph (a). ✅ Tick.
Whether that statement applies to all of the services? That’s not part of the statutory text. That’s IP Australia adding friction by policy — not by law.
The Practice (Not the Law)
IP Australia’s position is that if “CLEANING” only refers to a handful of the listed services — say, home cleaning and commercial premises — while your broader list also covers plumbing, garden maintenance, and pest control, then the marks in the series are no longer sufficiently aligned for a single registration.
Their concern: you’re using the series construct as a backdoor to bulk file a grab bag of marks that lack genuine commonality.
But here’s the catch: section 51(1) does not impose a requirement that the differing matter — like “CLEANING” — must describe all of the goods or services. The section simply requires that:
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The marks resemble each other in material particulars, and
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The differences fall only within one or more of the categories listed:
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statements about the goods/services,
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statements about number, price, quality or place, or
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colour of part of the mark.
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So, if “CLEANING” is a statement about services (and it is), and the marks still resemble each other in their key features (say, the word “BURST” in a bold red typeface with a splash logo), then the Act is satisfied.
The idea that every descriptive word must apply to all services is IP Australia policy, not law. It’s not in the Act. It’s not in the Explanatory Memorandum. It’s simply a convenient threshold applied to keep the register tidy — which may be operationally defensible, but not legally required.
What’s a Brand Owner To Do?
If you’re filing a series mark where the only difference is a descriptive word that applies to some — but not all — of the listed services, you’ve got two choices:
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Play nice: Redraft your specification to group services so that each descriptor applies across the board. That means breaking up the series and filing multiple applications.
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Push back: If the examiner raises an objection, go back to the legislation. Section 51(1) only requires that:
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The marks resemble each other in material particulars, and
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The differences fall only within the three specified categories.
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You may not win every time, but you’ll be on solid legal ground — and might just push the boundaries of a policy that’s grown a little too rigid for its boots.
There’s no additional legal requirement that the differing statement about services must relate to all of them. That’s a policy position, not a statutory one.
So if “BURST PLUMBING” and “BURST CLEANING” share all core branding elements and differ only by a word that is a statement about services — you’ve met the test under the Act.
Bottom Line
IP Australia’s insistence on descriptive uniformity across the entire class spec is not supported by s 51(1) of the Act. The only legal requirement is that the marks:
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Resemble each other in material particulars, and
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Differ only in respect of statements as to goods/services, price, quality, place, or colour.
Everything else? That’s Office convenience, not legislative command.
So don’t be afraid to push back.
And if that fails… well, split the applications, swallow the extra fee, and tell your accountant it was a “protest expense” … the cost of resisting bureaucratic overreach.

In a sweet victory for brand owners, Cadbury UK Limited has successfully opposed the registration of the trade mark CRUNCHIEZ SURPRIZE in Australia, convincing the Trade Marks Office that the name was too close for comfort to its iconic CRUNCHIE mark.
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