Background
SurgiSil, L.L.P., a medical device company, applied for a design patent covering the “ornamental design for a lip implant.” Design Patent Application No. 29/491,550 showed a smooth, torpedo-shaped implement used for cosmetic augmentation procedures. A USPTO examiner rejected the application, citing a Blick art supply catalog as prior art. The catalog showed a blending tool — a smooth, similarly shaped instrument used by artists to blend charcoal or pastel — that had an essentially identical physical profile.
The Patent Trial and Appeal Board (PTAB) affirmed the rejection, concluding that the prior art blending tool would have anticipated the claimed design because the shapes were virtually identical. SurgiSil appealed to the Federal Circuit, arguing that the fact-finder erred as a matter of law by comparing the claimed lip implant design to a prior art reference that depicted an entirely different article: an art tool, not a medical device.
The Court’s Holding
The Federal Circuit reversed. In a short but consequential opinion, the court held that a design patent claim is expressly limited to the article of manufacture identified in the claim. That article-specific limitation is not decorative or optional — it is a substantive boundary of the claim itself. Accordingly, prior art can only anticipate a design patent if the prior art reference discloses a design applied to the same article of manufacture. A design embodied in an art blending tool cannot anticipate a design claimed for a lip implant, even if the two shapes are visually indistinguishable.
The court rejected the Board’s reasoning that design patents “cover a design in the abstract.” That approach, the Federal Circuit explained, improperly stripped the claimed article of its limiting function. The Markman claim construction principle that all claim limitations must be given meaning applies equally to design patents — and the article of manufacture is a limitation, not mere context.
Key Takeaways
- Design patent claims are limited to the specific article of manufacture identified in the claim — prior art must be directed to the same article to anticipate or render obvious the claimed design.
- A visually identical shape found in prior art depicting a different article does not automatically anticipate a design patent claim for a different product category.
- Design patent applicants and practitioners should carefully specify the article of manufacture in their claims, since doing so can provide protection against broader prior art references.
- The decision has downstream implications for design patent infringement analysis as well: the same article-specific limitation logically applies to the infringement inquiry, not just anticipation.
Why It Matters
Before In re SurgiSil, there was genuine ambiguity about whether design patents protected the shape of an object regardless of its intended use, or only the design as applied to a particular article. The Federal Circuit answered that question definitively: the article matters. A soup can design does not anticipate a trophy design; an art tool does not anticipate a medical implant.
This ruling has immediate practical consequences. Patent examiners rejecting design applications must cite prior art from the same or closely analogous articles of manufacture. PTAB panels reviewing design patent validity must evaluate whether the prior art actually covers the same article. And in litigation, invalidity arguments based on prior art from unrelated product categories are significantly weakened. The decision renewed interest in design patent prosecution strategy — particularly for companies in medical devices, consumer electronics, and other industries where the same physical form might appear in completely different product contexts.