The drawings are the claim
The scope of a design patent comes mainly from its drawings, including what is shown in solid lines and what is left in broken lines as unclaimed. Courts are often reluctant to translate a design into a detailed verbal description and prefer to compare the images directly, though they may address functional elements or the meaning of broken lines. Disputes over how much of the product is claimed, and how crowded the field of earlier designs is, often decide the comparison. Owners should gather their product history and the design's development record, and accused parties should collect earlier designs that resemble the patented one.
Validity challenges
Accused infringers usually test whether the design was new and non-obvious when filed, and whether the claimed features are dictated by function rather than ornament. The Federal Circuit revised its approach to design patent obviousness in 2024, moving away from a rigid test that had made these challenges hard, and courts are still working out how the new approach applies. Earlier products, catalogs, and foreign registrations can all serve as prior art. Challenges can also be brought at the Patent Trial and Appeal Board, subject to the USPTO's discretion to institute review.
Remedies and early court orders
A design patent owner can seek the infringer's total profit on the article of manufacture to which the design is applied, and identifying that article, whether a whole product or a component, is often contested. Many design cases, especially against online sellers, begin with requests for temporary restraining orders and asset freezes, and courts look carefully at whether the evidence supports that relief. Insurance coverage for design patent claims is often limited, so accused businesses should check their policies early rather than assume. Early in an engagement we review the patent and its file history, the products, and the likely forum, and set out the decisions to be made in the opening stage of the case.
