Care A2 Plus Pty Ltd v The a2 Milk Company Limited (No 2) [2026] FCA 475

This was a Federal Court fight about branding in the dairy and infant formula market. The a2 Milk Company owned five Australian trade marks, including the word mark "a2 Milk" and four device marks, registered for goods including milk and milk powder for infants. Care A2 Plus Pty Ltd and related entities were also operating in the infant formula space and used branding that included "Care A2+" and "A2+". The a2 Milk Company sued for trade mark infringement and for contraventions of the Australian Consumer Law.

The commercial tension in the case came from the fact that "A2" had a scientific background as well as a branding role. The extract explains that bovine milk proteins include beta-casein variants such as A1 and A2. So this was not a simple case about a made-up word with no ordinary meaning. The Court had to deal with a term that could refer to a scientific feature of milk, while also asking whether that same term had come to function in the market as a badge of origin for one trader.

The dispute also had a strong procedural and evidentiary dimension. Care A2 brought separate invalidity proceedings seeking to cancel, rectify or limit the a2 Milk Company's registrations. But that challenge was narrowed after Care A2 failed to comply with a security for costs order. The extract also records that Care A2's former solicitors ceased acting shortly before trial, the trial started a day late, and Care A2 filed no written opening submissions.

For business readers, that context matters. Trade mark cases are not decided only by abstract arguments about words and logos. They are also shaped by who has the stronger evidence, who has prepared properly, and whether procedural orders are complied with. Here, the a2 Milk Company appears to have come to court with extensive evidence on use, reputation, science, marketing and consumer association. Care A2 relied on a much thinner record built mainly from internet search material.

The extract shows that the Court was not looking only at one label on one tin of formula. The reasons identify several forms of impugned conduct. These included the impugned products themselves, a Kooyong Classic event, a Care Club Store and an investor bulletin. That tells business owners something important about how courts approach branding disputes. The legal risk sits across the whole commercial presentation of the sign, not just the main retail pack.

That broader approach is especially relevant for businesses that market through multiple channels. A sign may appear on packaging, websites, event materials, online stores, media releases, investor updates or sponsorship announcements. Even if a business thinks one use is minor or contextual, the Court may still look at the overall pattern of use and ask whether the sign is being used as a trade mark or badge of origin.

The extract also shows that one issue was whether the impugned sign should be treated as a composite mark or as separate marks in different contexts. That is a practical reminder that businesses cannot assume a court will always assess a sign exactly as the business internally describes it. The way the sign appears to consumers in each setting can matter.

For example, adding a house brand, a plus sign or other surrounding material may not solve the problem if the shared element remains the part consumers notice and remember. The Court's structure indicates that it separately considered the "A2+" mark and the "Care A2+" mark when dealing with deceptive similarity.

The first major issue was infringement. The Court had to decide whether the Care A2 parties' use of "A2+" and "Care A2+" was use as a trade mark and, if so, whether those signs were substantially identical to, or deceptively similar to, the a2 Milk Company's registered marks. The extract shows the Court dealt separately with substantial identicality and deceptive similarity, and also with whether the impugned sign should be treated as a composite mark or as separate marks.

The second major issue was validity. Care A2 challenged the a2 Milk Company's registrations on several grounds. The extract lists issues including distinctiveness under section 41, whether the marks were likely to mislead, deceive or cause confusion, whether there was a lack of intention to use the marks, whether the marks consisted of a sign that had become descriptive, and whether they related to articles formerly manufactured under a patent. Those are serious attacks because, if successful, they can remove or weaken the registered owner's rights altogether.

The third major issue was the ACL case. The extract specifically refers to alleged breaches of sections 18 and 29 of the ACL, the relevant class of consumer, the idea of a "not insignificant number" of consumers, the application of those principles to the facts, the Kooyong Classic sponsorship and evidence of actual confusion. So the Court was not only asking whether the signs were too close for trade mark purposes. It was also asking whether the conduct in the market was likely to mislead consumers into thinking there was some connection, endorsement or association with the a2 Milk Company.

The extract also shows that the Court considered evidence of actual confusion. That is often commercially powerful in branding disputes because it moves the case beyond theory and into what happened in the market. One example identified in the evidence summary was a news article that wrongly labelled Care A2 infant formula products as the a2 Milk Company's products.

The extract indicates that the a2 Milk Company succeeded on the core branding dispute. The catchwords state that the marks were not substantially identical, but were deceptively similar. That is an important distinction. A business does not need to copy another mark exactly to create infringement risk. If the overall resemblance is close enough to cause likely confusion, deceptive similarity can still be made out.

The extract also indicates that the Court rejected the main invalidity attacks. The reasons include a dedicated section headed "a2MC Marks not descriptive" and later sections dealing with distinctiveness, ordinary signification, whether other traders would legitimately wish to use the terms in their ordinary signification, and whether the terms "A2" and "A2 Milk" had acquired factual distinctiveness by 2011 or 2015. The structure of the reasons strongly indicates that the a2 Milk Company's registrations survived the challenge.

On the ACL side, the extract shows the Court dealt in detail with alleged contraventions of sections 18 and 29, including the relevant class of consumer, the "not insignificant number" test, application to the facts, Kooyong Classic sponsorship and actual confusion. The extract does not set out every final declaration in full, but the structure indicates that the Court made substantive findings on those ACL issues as part of the overall result.

The extract also expressly states that additional damages were awarded and that the infringing conduct was found to be flagrant. That is commercially significant. Additional damages are not just compensatory. Their presence in the catchwords signals that the Court regarded the conduct as serious enough to justify more than ordinary relief.

One important procedural point remains. The Court's orders on 23 April 2026 did not finally settle the exact relief and costs. Instead, the parties were directed to file agreed proposed orders by 7 May 2026 if possible, or competing proposed orders and short submissions by that date if they could not agree. A case management hearing was listed for 22 May 2026. So the reasons had been delivered, but the precise final orders still needed to be settled after judgment.

That means businesses should read this case as a strong liability and validity decision, while recognising that the exact form of injunctions, costs and any other final relief should be checked against later orders if those details matter for a specific legal question.

One of the clearest practical features of the extract is the difference in the parties' evidence. The a2 Milk Company relied on multiple witnesses covering marketing, sales, scientific context, survey material, online and retail investigations, and brand enforcement. It also relied on independent expert evidence in marketing and linguistics. The extract says none of a2 Milk Company's witnesses were cross-examined, Care A2 filed no expert evidence, and the expert evidence called by a2 Milk Company was unchallenged.

By contrast, the sole evidence relied on by Care A2 was one affidavit from a partner at its former solicitors annexing around 300 pages of documents obtained from internet searches and other publicly available sources. The Court noted several limitations in that material, including the absence of evidence about search strategies, omitted results and whether results related to Australia. For business owners, this is a reminder that evidence quality can shape the whole case. A thin evidentiary record can leave a party with little practical room to resist a well-supported infringement and ACL claim.

The procedural narrowing of the invalidity case is also a major lesson. Care A2 originally commenced invalidity proceedings in respect of about 50 trade marks, with 12 representative marks later identified. But after it failed to comply with an order to pay AUD$100,000 security for costs within 28 days, the invalidity case was dismissed except for the five marks relied on in the infringement proceeding. In other words, a broad attack on the brand portfolio was cut back to a much narrower defensive case.

That matters because businesses sometimes treat procedural orders as secondary to the substantive merits. This extract shows that procedural compliance can materially affect the scope of the case you are allowed to run. If you are defending a trade mark claim and planning an invalidity challenge, funding, evidence and procedural discipline are not side issues. They are part of the strategy.

The first lesson is that a term can have descriptive or scientific flavour and still function as a protected trade mark. Businesses often assume that if a word points to an ingredient, process or technical feature, no one can build strong rights in it. This case shows the position is more nuanced. The extract indicates the Court considered both inherent distinctiveness and factual distinctiveness, and that it accepted the a2 Milk Company's marks were not merely descriptive in the way Care A2 alleged.

The second lesson is that adding extra matter may not be enough. The extract shows the Court separately considered "A2+" and "Care A2+" and still found deceptive similarity. In practical terms, adding your own house brand, a plus sign or another element may not remove the risk if the shared element remains the dominant or memorable part of the sign.

The third lesson is that consumer law can widen the problem. Even if a business thinks it has a technical argument under trade mark law, the ACL may still catch conduct that causes a not insignificant number of consumers to think there is an affiliation, endorsement or product connection. That is especially relevant in consumer goods markets where products are sold through supermarkets, online channels and promotional partnerships.

The fourth lesson is that evidence and conduct matter. The extract points to actual confusion evidence, extensive brand and survey evidence from the registered owner, and a finding of flagrant conduct supporting additional damages. Businesses should not assume that a close-call branding strategy is worth the risk. If the market already strongly associates a term with another trader, pressing ahead can become expensive very quickly.

The fifth lesson is operational. Brand clearance should not stop at a trade mark register search. You should also ask how the term is used in the market, whether consumers associate it with a particular trader, whether your packaging and promotions emphasise the same element, and whether your use could imply a connection in sponsorships, online stores or investor-facing material. If there is a real overlap, it is usually cheaper to adjust the brand before launch than to rebrand after stock is printed and proceedings are filed.

For businesses in food, health-adjacent or science-heavy sectors, this case is a reminder that technical language can become commercially distinctive over time. The legal question is not solved by saying, "but the term means something in science". The market meaning may be just as important.

The judgment records that the hearing took place on 22, 23, 30 and 31 October 2024, with the last submissions dated 29 October 2024. Judgment was delivered by Rofe J on 23 April 2026. On that date, the Court directed the parties to file agreed proposed orders by 7 May 2026 if possible, or competing proposed orders and short submissions if they could not agree. A case management hearing was listed for 22 May 2026 to deal with any remaining disagreement about orders.

That means the reasons had been handed down, but the exact final orders were still to be settled at that point. If you need to know the precise injunction terms, costs outcome or final relief, those details should be checked against any later orders entered after the judgment date.