What Just Happened: The Federal Circuit Blocks MON AMI Over Sound-Alike Conflict
On July 1, 2026, the U.S. Court of Appeals for the Federal Circuit issued a per curiam opinion that should be required reading for every founder, product manager, and brand strategist who has ever thought, "Our name is different enough." It is not always different enough. And this case proves it.
The Federal Circuit affirmed a Trademark Trial and Appeal Board (TTAB) ruling that the mark MON AMI is confusingly similar to the previously registered mark AMI, and that MON AMI could therefore not be registered. The story was first reported by IPWatchdog on July 1, 2026.
Marini y Compañia, S.A. had applied to register the mark MON AMI for edible pet treats. The USPTO examiner refused the application based on the registered mark AMI for "foodstuffs for animals" in International Class 31, which also includes the narrower "edible pet treat" classifications used by the Marini marks.
On appeal to the Federal Circuit, Marini argued that the TTAB erred in its analysis, particularly on the similarity of the marks. Marini primarily argued that the Board failed to treat the accent over the "I" in the AMI mark properly and failed to properly consider the "MON" element of Marini's mark.
The court was not persuaded. The Federal Circuit noted that Marini appeared to argue that because the AMI mark has a grave accent mark and its registrant stated it had no literal translation from Italian to English, it was somehow error for the Board to find similarity with MON AMI, which does not include a grave accent mark and which translates to "my friend" in English. The CAFC rejected this reasoning, saying that the TTAB's determination that "consumers may pronounce a mark differently than intended by the brand owner" was supported by substantial evidence.
In plain terms: the court said that how you intend consumers to say your brand name does not control the legal analysis. What matters is how a real-world consumer might actually say it, and whether that pronunciation creates confusion with an existing mark.
Why This Case Matters Far Beyond Pet Treats
The pet industry context is almost beside the point. The principle at stake here applies to every startup naming a SaaS product, every DTC brand launching a new SKU, and every small business picking a name for its storefront.
Trademarks do not have to be identical to be confusingly similar. They could just be similar in sound, appearance, or meaning, or could create a similar commercial impression. The MON AMI ruling is a live, just-decided illustration of exactly that principle.
The USPTO's own guidance makes the standard clear: likelihood of confusion is the most common reason for refusing registration, and the best way to avoid a likelihood of confusion refusal is to conduct a comprehensive clearance search and understand how to correctly assess results before submitting an application.
What makes this case especially instructive for founders is the phonetic dimension. MON AMI and AMI are not spelled the same. They are not even the same length. One is a French phrase meaning "my friend." The other is a single Italian-accented word. And yet the court found them too close to coexist on the same goods. That is the phonetic trademark search lesson in action.
5 Founder Takeaways From the MON AMI Ruling
- Sound matters as much as spelling when you do a trademark availability check.
The single most actionable lesson here is that a trademark search cannot stop at exact-match spelling. Trademarks can be confusingly similar because they could be pronounced the same way, even though they are spelled differently. If your brand name sounds like a competitor's mark when spoken aloud, that phonetic similarity can be enough to block your registration and expose you to an infringement claim.
- Adding a word to an existing mark does not automatically make it safe.
Marini added "MON" in front of "AMI" and argued that this prefix created enough separation. The court disagreed. The dominant portion of the mark, the "AMI" sound, was still present and still confusing. Founders who think they can take a competitor's name and add a prefix, suffix, or modifier should understand that this strategy has real legal limits. The USPTO examiner and the TTAB will look at the overall commercial impression, not just the added element.
- Foreign-language marks are not automatically safe from confusion with each other.
Marini argued that because AMI has a grave accent mark and its registrant stated it had no literal translation from Italian to English, it was somehow different from MON AMI, which translates to "my friend" in English. The court rejected this argument. When you are asking yourself "is my business name trademarked," do not assume that a French name is safe just because a similar-sounding Italian name already exists on the register. Cross-language phonetic conflicts are real.
- Industry category and goods class are critical context for any trademark search step by step.
The examiner refused Marini's application because the registered AMI mark covered "foodstuffs for animals" in International Class 31, which also includes the narrower "edible pet treat" classifications used by the Marini marks. The overlap in goods class was a decisive factor. When you search the USPTO database, you must look at both the marks themselves and the classes of goods or services they cover. A sound-alike mark in a completely unrelated industry is a very different risk than a sound-alike mark in your exact product category.
- A TTAB refusal is not the end of your legal exposure. It is the beginning.
The Trademark Trial and Appeal Board decides only the right to register, not damages. If you lose, you can appeal to the Federal Circuit or file a civil action. That means a brand that cannot register is also a brand that may face infringement litigation from the mark owner in federal court. The registration refusal is a warning signal, not a ceiling on your liability.
What This Means for Your Naming Workflow
Most founders treat trademark clearance as a single checkbox: they run a quick search, see that no one has registered the exact name, and move on. The MON AMI case is a reminder that this approach is incomplete. A sound-alike trademark check is not optional. It is the core of how trademark search works.
Here is a practical naming workflow that accounts for the lessons in this ruling:
- Step 1. Run a free trademark search on the USPTO's current search system. The USPTO launched a new cloud-based trademark search system with basic and advanced search options. It is the beta version of a new trademark search system that replaced the older TESS interface. Start there for any trademark availability check.
- Step 2. Search phonetic variants, not just exact spellings. If your brand name is "Klaara," search "Clara," "Klara," and "Claara." If it is "Lumo," search "Luma," "Lumeau," and "Lummo." This is what a phonetic trademark search looks like in practice.
- Step 3. Search within your goods and services class first, then broaden. Start with your exact International Class. Then expand to adjacent classes where consumers might expect related goods. The MON AMI applicant ran directly into a conflict in the same class.
- Define naming goals and constraints.
- Screen for similar marks in adjacent categories.
- Compare top alternatives before committing.
- Document a clear go/no-go decision.
FAQ
Is this legal advice?
No. This article is informational only and not legal advice.
Where should founders start?
Begin with a practical screening process in Trademark Search.
What should teams do before filing?
Review risk patterns, compare alternatives, and align on a filing plan in Pricing.
Informational disclaimer: this article is educational content and not legal advice.
Quick checklist
What should founders do if a match looks close?
Treat it as a review trigger and compare alternatives before proceeding.
How should teams prioritize multiple candidate names?
Rank names by defensibility, clarity, and strategic flexibility.
When should legal counsel be involved?
Involve counsel before filing and before major spend commitments.