Deckers lost its patent infringement case against Quince, and a lack of specificity on design defect means dupes will continue for generic features.

After a four-day trial, a federal jury invalidated the design patent Deckers Outdoor Corp. had for its Ugg Ultra Mini Boot, giving Quince the win.

Fashion value platform Quince, known for creating products some call dupes, filed a suit against Ugg parent Deckers alleging an antitrust claim.