Trade Dress Protection in the U.S., and How Certification Marks Differ
Trade dress protection: when packaging, product shape or a shop's look can be protected, what you must prove, and how certification marks work.
The short answer
Trade dress is the overall look of a product, its packaging or a business's premises, when that look tells buyers who makes it. U.S. law protects it, registered or not, if it is distinctive and not functional. Product design is protected only after it acquires secondary meaning (Wal-Mart v. Samara, 2000). A design patent, which lasts 15 years from grant, can cover the gap.
At a glance
- Packaging and restaurant décor can be inherently distinctive; a product's own design never is (Two Pesos, 1992; Wal-Mart, 2000).
- A feature that is essential to how a product works, or affects its cost or quality, is functional and cannot be trade dress (TrafFix, 2001).
- For unregistered trade dress, the owner must prove it is not functional (15 U.S.C. §1125(a)(3)).
- A certification mark certifies other people's goods; its owner may not make or sell the certified goods itself.
What trade dress covers
Trade dress is a form of trademark. It can cover the shape and colour of packaging, the layout of a label, a product's shape or design, or the décor and layout of a restaurant or shop.
In Two Pesos v. Taco Cabana (1992), a dispute between two Texas Mexican-restaurant chains over similar décor, the Supreme Court held that inherently distinctive trade dress is protected under §43(a) of the Lanham Act without proof of secondary meaning.
Colour alone can sometimes work as a trademark, when it identifies the source and serves no other significant function (Qualitex v. Jacobson, 1995).
The two tests: distinctiveness and functionality
| Type of trade dress | Can it be inherently distinctive? | What the owner must show |
|---|---|---|
| Packaging, labels, containers | Yes | Distinctiveness (inherent or acquired), non-functionality, likely confusion |
| Restaurant or shop décor | Yes (Two Pesos) | The same |
| Product design or shape | No (Wal-Mart v. Samara) | Secondary meaning, non-functionality, likely confusion |
| Colour alone | No; it needs secondary meaning (Qualitex) | Secondary meaning, non-functionality, likely confusion |
Functionality is a hard bar. A feature is functional if it is essential to the use or purpose of the product or affects its cost or quality. In TrafFix Devices v. Marketing Displays (2001), a dual-spring sign stand once covered by utility patents could not be protected as trade dress; the Court said a utility patent is strong evidence that the claimed features are functional.
Matter that is functional as a whole also cannot be registered (15 U.S.C. §1052(e)(5)).
Proving secondary meaning
Secondary meaning exists when the relevant public sees the look as pointing to one source. Evidence commonly includes:
- how long, and how exclusively, you have used the trade dress;
- advertising that points to the look itself, with its spend and reach;
- sales volume and unsolicited media coverage;
- consumer surveys designed for litigation;
- evidence that a competitor copied the look on purpose.
Registering trade dress
Trade dress can be registered with the USPTO like other marks. For registration, the USPTO may accept 5 years of substantially exclusive and continuous use as prima facie evidence of acquired distinctiveness (15 U.S.C. §1052(f)), though product designs usually need more.
A registration on the Principal Register brings presumptions of validity and ownership. It also removes the burden that §1125(a)(3) puts on owners of unregistered trade dress to prove non-functionality in court.
Trade dress that is not yet distinctive but can distinguish goods may go on the Supplemental Register, which expressly covers packages and configurations of goods that are not functional (15 U.S.C. §1091(c)).
The application needs a drawing and description that claim only the non-functional features, and specimens showing the trade dress in use. Only Principal registrations can be recorded with U.S. Customs and Border Protection, at $190 per class, to stop infringing imports (19 CFR 133.1, 133.3).
Infringement and dilution
To win an infringement claim, the owner must show protectable trade dress, distinctive and (if unregistered) not functional, and a likelihood that buyers will be confused about the source.
Dilution is a separate claim. The owner of a famous trade dress, widely recognised by the general U.S. public, can stop blurring or tarnishment even without confusion or competition. For unregistered trade dress, the owner must prove it is not functional and is famous as a whole, apart from any registered marks within it (15 U.S.C. §1125(c)(4)).
Design patents: protecting the look from launch
Because product design needs secondary meaning before trade dress protection begins, many companies also file a design patent for a new product's ornamental appearance. A design patent lasts 15 years from the date of grant (35 U.S.C. §173).
File before your own public disclosure is a year old: disclosures by the inventor 1 year or less before filing do not count as prior art (35 U.S.C. §102(b)(1)). Other countries may have no such grace period.
Certification marks
A certification mark is used by people other than its owner to certify regional or other origin, material, mode of manufacture, quality or other characteristics, or that union members did the work (15 U.S.C. §1127). Labels certifying organic produce, products not tested on animals or sustainably sourced goods are familiar examples.
- The owner sets written standards and must control the mark's use; the application must include a copy of the standards (37 CFR 2.45).
- The owner must not produce or market the goods or services it certifies, except to promote the certification programme.
- The owner must certify anyone who meets the standards. A registration can be cancelled at any time if the owner fails to control the mark, sells the certified goods, allows non-certifying uses or discriminately refuses to certify (15 U.S.C. §1064(5)).
- Certification marks are classified in U.S. Class A for goods or Class B for services.
Collective marks are different
A collective mark is used by the members of a cooperative, association or other group, and includes marks indicating membership in a union or association (15 U.S.C. §1127). Members use it on their own goods or services, which a certification mark owner may not do.
Practical steps for a brand with a distinctive look
- List the visual features you want to protect, and set aside the functional ones.
- File a design patent for a new product design before or soon after launch.
- Use the look consistently and advertise it as a sign of your brand.
- Register packaging trade dress with the USPTO when it is distinctive; consider the Supplemental Register while it builds secondary meaning.
- Record Principal registrations with Customs if copies arrive through U.S. ports.
- Keep evidence: dated photos, sales figures, advertising spend and press coverage.
Who handles this

Nora Busra Turan
Partner · Attorney
Trade dress: questions people ask
can you protect the shape of a product with trade dress
Yes, but as trade dress only after the shape has acquired secondary meaning, and only if it is not functional (Wal-Mart v. Samara, 2000). Before that point, a design patent, which lasts 15 years from grant, is the usual tool. Merit Law LLP in Houston can review your product.
can you trademark a color
Sometimes. In Qualitex (1995) the Supreme Court held that a color can be a trademark when it identifies the source of goods and is not functional. It needs proof of secondary meaning, so a new color is hard to protect. An attorney reviews the evidence for your color.
is unregistered trade dress protected
Yes. Unregistered trade dress is protected under 15 U.S.C. §1125(a), but you carry the burden of proving it is not functional. A Principal Register registration gives presumptions that make enforcement easier. Whether your trade dress qualifies depends on the facts.
can trade dress protect a design after the patent expires
Usually not for features claimed in the expired utility patent: TrafFix (2001) treats them as strong evidence of functionality. Ornamental features outside the patent claims may still be protectable. Merit Law LLP in Houston compares the patent claims with your design before advising.
certification mark vs trademark
A certification mark shows that other people's goods or services meet a standard, so its owner may not produce or market the goods it certifies (15 U.S.C. §1064(5)). A company marking its own products uses an ordinary trademark. An attorney reviews which mark fits your plan.
how long does trade dress protection last
Trade dress protection lasts as long as the trade dress stays distinctive, non-functional and in use. A registration must be maintained like any other trademark registration, with filings between years 5 and 6 and years 9 and 10, then every 10 years. An attorney sets your calendar.
Sources and review date
Fees and rules reviewed 16 Oct 2026. Sources below.
- Two Pesos, Inc. v. Taco Cabana, Inc., 505 U.S. 763 (1992)
- Wal-Mart Stores, Inc. v. Samara Brothers, Inc., 529 U.S. 205 (2000)
- TrafFix Devices, Inc. v. Marketing Displays, Inc., 532 U.S. 23 (2001)
- Qualitex Co. v. Jacobson Products Co., 514 U.S. 159 (1995)
- 15 U.S.C. §1125: False designation, trade dress and dilution
- 15 U.S.C. §1052: Registrable marks; functionality; acquired distinctiveness
- 15 U.S.C. §1091: Supplemental Register
- 15 U.S.C. §1127: Definitions (certification and collective marks)
- 15 U.S.C. §1064: Cancellation of certification marks
- 35 U.S.C. §173: Term of design patent
- 35 U.S.C. §102: Novelty and the 1-year grace period
- 37 CFR 2.45: Certification mark applications
- 19 CFR 133.1: Customs recordation of trademarks
- 19 CFR 133.3: Customs recordation fee
What changed: three 2024 posts on trade dress and certification marks merged, checked against the statutes and Supreme Court opinions, with a design patent section added.
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