Whether the design is protectable
Two-dimensional artwork such as prints, patterns, and graphics is often protectable if it reflects some originality. For three-dimensional useful articles, such as furniture or apparel shapes, copyright reaches only artistic features that can be identified separately from the article's useful function and could exist on their own as art. Simple shapes, common motifs, and designs in the public domain usually get thin protection or none. Courts compare the protected elements of the two designs rather than the overall product, so a design with many unprotectable elements can be harder to enforce. Copying is usually proven through access to the design and substantial similarity in the protected elements, and a design created independently does not infringe even if it looks alike.
Registration and remedies
For US works, a registration decision from the Copyright Office is generally required before filing suit. Statutory damages and attorney's fees are usually available only if the design was registered before the infringement began, or within a limited period after first publication. Without them, the claim may depend on proving actual damages or the defendant's profits. Many textile and graphic design owners register new designs routinely, sometimes using the Office's group options for unpublished work, to keep this option open.
Defendants across the supply chain
Design copyright suits often name manufacturers, importers, wholesalers, and retailers together, because each one that copies or distributes the work can be liable. Retailers commonly look to their vendors' purchase agreements for indemnity and defense obligations. If you are accused, preserve purchase orders, design files, and any record showing where the design came from, and do not alter inventory records. If you are the owner, bring your original design files with dates, registration records, and samples of the accused goods. A first meeting usually focuses on registration timing, the strength of the comparison, and who in the chain is worth pursuing or involving.