One Letter, Two Products: What Fuente v. Vaporous Teaches About Cigar Marks

Fuente owns registrations for the letter X in standard characters, covering cigars and accessories such as ashtrays, cutters and lighters. When a vaporizer company applied to register a design mark consisting of an X with a dot above it, for oral vaporizers, Fuente opposed. The Trademark Trial and Appeal Board dismissed the opposition, and on April 8, 2026, in a precedential opinion by Judge Hughes in Fuente Marketing Ltd. v. Vaporous Technologies, LLC, the Federal Circuit affirmed.

What makes the case worth studying is that Fuente won several of the arguments and still lost.

What the Board found

Likelihood of confusion is decided under the factors from In re E. I. du Pont de Nemours & Co. The Board's findings on the main ones came out this way:

• Trade channels and customers favored Fuente. The Board found that vapes and cigars move through overlapping channels and reach some of the same customers, with vapes seen as an alternative to cigars.
• Strength was neutral. The letter X is arbitrary for cigars, which made Fuente's mark conceptually strong. But on the record before the Board, its commercial strength, meaning recognition in the marketplace, was limited. The two offset each other.
• The marks weighed heavily against confusion. The Board found that consumers would perceive the X with a dot as a stick figure rather than as the letter X. That gave the two marks different commercial impressions and different sounds.

What the Federal Circuit held

Fuente argued that the marks were similar, that the Board treated a stipulation between the parties about how consumers perceive the applicant's mark as dispositive, that it undervalued the conceptual strength of the X marks, that it failed to resolve doubt in favor of the senior user and that it did not explain its overall weighing. The court held that any treatment of the stipulation as dispositive was harmless error, because the Board reached its conclusion on independent evidence, and it found substantial evidence for the Board's conclusions.

The key holding is a restatement of a principle that brand owners sometimes forget: a single du Pont factor may be dispositive, especially when that factor is the dissimilarity of the marks. Related goods and shared customers do not create a likelihood of confusion between marks that consumers do not see as alike.

Lesson one: perception decides what a mark is

The applicant's design was built from the same letter. The case turned on the finding that buyers would not read it as a letter at all. For anyone clearing a logo, monogram or symbol, the question is not what the design is made of but what the market will take it to be. A search that only asks "does this use an X" asks the wrong question, in both directions.

Lesson two: strength must be proved

A distinctive mark is not the same as a strong one in litigation. Commercial strength is a question of evidence: sales, advertising, unsolicited press, survey results and the other proof that shows the public actually knows the mark. A senior user that expects to rely on the strength of its mark in an opposition should be building that record years before the dispute, not after the notice of opposition is filed.

Lesson three: be careful what you stipulate

Stipulations make TTAB proceedings faster and cheaper, and they are often sensible. A stipulation about how consumers perceive a mark, though, goes to the heart of the likelihood of confusion question, and in this case it became a central issue on appeal. The error was harmless only because other evidence supported the same finding. Before agreeing to a stipulated fact about how the public sees a mark, a party should assume it may be treated as decisive.

The cost of a sloppy application

The procedure has changed too. The USPTO's fee rule that took effect January 18, 2025 replaced TEAS Plus and TEAS Standard with a single base application at $350 per class, and added surcharges for incomplete or improvised filings:

For cigar companies, the identification of goods is where those surcharges tend to appear. The USPTO's ID Manual already contains entries for cigars, cigarillos and many accessories. Using those entries, and writing new language only when there is a real reason, keeps the cost down and the scope clear.

Foreign manufacturers should also remember that since 2019 the USPTO has required trademark applicants and registrants domiciled outside the United States to be represented by a U.S.-licensed attorney. For factories in the Dominican Republic, Nicaragua, Honduras and Europe that file in their own names, that rule applies to every application and every post-registration filing.

The takeaway

A cigar brand's mark is protected by what the public sees and what the owner can prove. Shared channels and a distinctive letter were not enough here. The design on the other side, as consumers would perceive it, decided the case.