Start from the uncomfortable truth: copying a garment's design is generally legal in the U.S. Clothing is considered a "useful article" under copyright law, so its overall shape and cut usually can't be copyrighted. The Supreme Court's Star Athletica v. Varsity Brands (2017) carved out one exception worth knowing: a print or graphic that can be perceived as art separate from the garment can be copyrighted. The silhouette itself cannot. That's why a dupe of a viral dress can be sold the week after the original drops.

The first line a dupe can cross is trademark. Use a brand's name, logo, or registered signature pattern and you're no longer duping a look, you're infringing a mark under 15 U.S.C. § 1114. This is the clearest and most dangerous line, because it can shade into counterfeiting, which carries criminal exposure.

The second is trade dress: a product's look can be protected under 15 U.S.C. § 1125(a) if it's non-functional and consumers read it as identifying the source, which for product designs means proving secondary meaning. A red sole (Christian Louboutin v. Yves Saint Laurent, 2d Cir. 2012), a quilted pattern with hardware, a specific bottle shape. Courts have protected all of these. A dupe that copies a feature the public reads as "that brand" can be liable even without touching a logo. I break down how these layers fit together in what actually protects a handbag.

The third is the design patent: brands can patent a specific ornamental design, and under 35 U.S.C. § 173 the patent lasts 15 years from grant. If a dupe copies a patented design, intent and branding don't matter. It's infringement. The catch is that design patents are narrow and expensive, so most products aren't covered.

For designers, the lesson cuts both ways. If you're copied, you usually have recourse only where you hold a registered mark, provable trade dress, or a design patent. If you're the one drawing inspiration, the safe zone is the idea and the silhouette, not the logo, the source-identifying details, or a patented design. Either way, document everything. With AI making copies faster and fakes more convincing, proof of what you made first is the asset that lasts. I keep templates for that in the provenance toolkit.

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This article is editorial analysis, not legal advice. For questions about your specific situation, consult a qualified attorney.