Firework Fizzles (For Now): The High Court Re-stitches the Katy Perry Trade Mark Battle

The long-running trade mark dispute between Australian designer Katie Taylor (born Katie Perry) and global pop star Katy Perry (Katheryn Hudson) has now reached the High Court of Australia — and the result is a dramatic twist.

In Taylor v Killer Queen LLC [2026] HCA 5, the High Court has allowed Taylor’s appeal, setting aside the Full Federal Court’s decision that had ordered cancellation of her “KATIE PERRY” clothing trade mark.

The matter now returns to the Full Court to determine the remaining issues — meaning the fight isn’t quite over yet.

But the High Court’s reasoning significantly reshapes how courts should approach reputation-based cancellation and trade mark confusion involving celebrities.

Let’s unpack it.

🎤 The Background: Pop Star vs Fashion Label

This dispute has been simmering for more than 15 years.

In 2007–2008:

Australian designer Katie Taylor launches a clothing brand using her birth name KATIE PERRY.
She applies to register the word mark for clothing in September 2008.

Meanwhile:

US singer Katy Perry is exploding globally with hits like I Kissed a Girl.
Her fame reaches Australia during the same period.

The problem? The names are aurally identical and visually very close.

Taylor’s mark was eventually registered in 2009, and for years the two brands co-existed uneasily.

Then in 2019, the singer’s companies launched proceedings seeking to cancel the registration.

⚖️ What Happened in the Courts

The litigation has already taken several turns.

Federal Court (trial)

The trial judge:

found infringement by Perry-related merchandise sellers; but
refused to cancel Taylor’s trade mark.

The key finding was that, although the singer had a reputation in Australia in music and entertainment, she did not have a reputation in clothing at the priority date.

Full Federal Court

On appeal, the Full Court reversed that result, holding that:

Katy Perry’s reputation as a global pop star was sufficient;
consumers would expect pop stars to sell merchandise like clothing; and
the marks were so similar that confusion was likely.

Result: Taylor’s trade mark was ordered cancelled.

👑 The High Court Decision

The High Court has now allowed Taylor’s appeal and set aside that cancellation order.

The Court split in its reasoning, but the majority rejected key aspects of the Full Court’s approach.

The case has been remitted to the Full Federal Court to reconsider outstanding issues.

In practical terms, Taylor’s trade mark survives — at least for now.

The appeal centred on three important provisions of the Trade Marks Act 1995 (Cth):

s 60 — opposition based on reputation
s 88(2)(a) — cancellation based on grounds that could have opposed registration
s 88(2)(c) — cancellation where current use would cause confusion
s 89 — discretion not to cancel

The decision digs deeply into how reputation and confusion should actually be assessed.

1️⃣ Reputation Must Be Carefully Identified

The Court confirmed that s 60 requires reputation in a trade mark, not merely general fame.

“Reputation” in this context means recognition of the mark by the public, reflecting its “credit, image and values”.

The crucial question, though, is “Reputation for what?”.

In this case, the singer’s mark clearly had reputation in music and entertainment, but there was debate about whether that reputation extended to clothing.

The High Court emphasised that reputation does not automatically spill across industries simply because celebrities often expand their brands.

2️⃣ Confusion Must Arise Because of the Reputation

Another key point was that the likelihood of deception must arise because of the prior mark’s reputation, not merely because the marks look similar.

In other words, similarity alone is not enough — the reputation must drive the confusion.

The Court reiterated the classic test – would a reasonable number of people wonder if a trade connection exists?

This inquiry is assessed by comparing actual reputation of the earlier mark with notional normal and fair use of the challenged mark.

3️⃣ Notional Use Still Matters

A key trade mark principle resurfaced strongly, namely that courts assess how the registered mark could be used, not just how it actually has been used.

That means asking what legitimate uses could the trade mark owner make of the mark?

This concept of “notional normal and fair use” has long been part of Australian trade mark law, but the High Court’s analysis reinforces its importance.

4️⃣ Section 89 Discretion Remains Narrow

Another major issue was the discretion not to cancel a mark under s 89.

The Full Court had effectively ruled that Taylor’s act of applying for the trade mark — knowing of the singer’s fame — was enough to defeat that discretion.

The High Court’s reasoning suggests that approach may have been too rigid, holding instead that the question is whether the ground for cancellation arose through the registered owner’s “act or fault”.

That issue will now be reconsidered when the case returns to the Full Court.

🧵 Why This Case Matters

This decision will have ripple effects far beyond celebrity disputes.

It highlights several key principles:

Fame ≠ automatic trade mark dominance – A celebrity’s reputation does not automatically block registrations in unrelated markets.
Reputation must be analysed carefully – Courts must identify what goods or services the reputation actually relates to.
Confusion must flow from reputation – Section 60 is not simply a deceptive similarity test.
Cancellation powers are not automatic – Even where confusion might arise, discretionary factors still matter.

🎬 Final Stitch

At one level, this case is a quirky battle between two women with nearly identical names.

At another, it raises profound questions about how trade mark law treats celebrity brands.

Should global fame give artists a shadow monopoly across merchandising categories?

Or should trade mark rights remain tied to actual commercial use and reputation?

The High Court hasn’t ended the fight — but it has reshaped the legal framework in which it will be decided.

For now, at least, Katie Perry the designer still has her label.