What this toolkit is for, and who should use it

A design patent protects the way a useful article looks—its ornamental shape, surface ornamentation, or configuration—rather than the way it works. A new sneaker silhouette, the contour of a beverage bottle, an icon on a phone screen, the grille of a car: each can be the subject of a design patent. This toolkit is a navigation guide to the entire design-patent field. It is not a how-to for one discrete task; instead, it maps the terrain and, at each stage, points you to the deeper article or step-by-step checklist you actually need.

It is written for three overlapping audiences: product companies and founders deciding whether and how to protect a design; prosecution counsel preparing and shepherding applications through the USPTO; and litigators asserting or defending design patents after the seismic 2024 changes in obviousness law. Read the roadmap first, then follow the Resources blocks into the weeds.

A quick orientation on vocabulary. A utility patent (35 U.S.C. § 101) covers how an invention functions. A design patent (35 U.S.C. § 171) covers a "new, original and ornamental design for an article of manufacture." Trade dress (Lanham Act § 43(a), 15 U.S.C. § 1125(a)) protects product appearance that functions as a source identifier. These three overlap constantly, and choosing among them—or stacking them—is one of the central strategic questions this toolkit addresses.

Roadmap at a glance

  1. Understand the scope — what a design patent actually protects, and its term and limits.
  2. Choose the right vehicle — design vs. utility vs. trade dress; concurrent protection and double patenting.
  3. Master the drawings — figures are the claim; surface shading, broken lines, and views.
  4. Prosecute the application — filing requirements, single-claim practice, restriction, the Hague system.
  5. Clear the validity hurdles — functionality, novelty, and obviousness after LKQ v. GM.
  6. Analyze infringement — the ordinary-observer test and the role of prior art.
  7. Capture the remedy — total-profit damages under § 289 after Samsung v. Apple.
  8. Enforce and maintain — marking, litigation strategy, and portfolio upkeep.

Stage 1 — Understand what a design patent protects

A design patent claims the visual characteristics embodied in or applied to an article of manufacture. The term is 15 years from grant for applications filed on or after May 13, 2015 (no maintenance fees, unlike utility patents). The protection is narrow in subject matter but can be potent: it covers the appearance, so a competitor who copies the look infringes even if the underlying mechanics differ entirely.

Three limits matter from the outset. First, the design must be ornamental, not dictated solely by function. Second, it must be applied to an article of manufacture—a design in the abstract is not patentable, though designs for partial articles and for on-screen graphical user interfaces are. Third, the claim is defined almost entirely by the drawings, so scope is a drafting decision, not a verbal one.

A design patent may protect any of three categories: (1) the configuration or shape of an article (the silhouette of a chair); (2) the surface ornamentation applied to an article (a repeating pattern printed on fabric); or (3) a combination of the two. Computer-generated icons and graphical user interfaces qualify when claimed as applied to a display screen or portion of one, which is why technology companies hold large GUI design-patent portfolios. What a design patent does not protect is the idea, the function, or the brand meaning—those belong to utility patents, trade secret, and trademark/trade dress respectively.

Illustration. Suppose a startup designs a distinctive water bottle with a faceted, gem-like body. A utility patent might cover a novel cap-sealing mechanism inside; a design patent would cover the faceted ornamental shape of the body as drawn; and, years later, once consumers associate that shape with the brand, trade dress might cover the same shape as a source identifier. One product, three potential rights, each protecting a different thing.

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Stage 2 — Choose the right vehicle: design vs. utility vs. trade dress

The single most consequential early decision is which form of protection to pursue—and whether to pursue more than one. Design and utility patents are not mutually exclusive: the same product can carry a utility patent on its mechanism and a design patent on its appearance. Filing both raises double-patenting concerns when the design and utility claims are not patentably distinct, an issue the Federal Circuit continues to refine.

Trade dress is a different animal. It is potentially perpetual (it lasts as long as the dress identifies source and is used), but it requires non-functionality plus either inherent distinctiveness or acquired secondary meaning, and product configuration trade dress can never be inherently distinctive (Wal-Mart v. Samara Bros., 529 U.S. 205 (2000)). A common sophisticated strategy is to file a design patent early (when the design is new but has no secondary meaning yet) and build trade-dress rights over the design-patent term, so trademark protection matures as the patent expires.

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Stage 3 — Master the drawings: the figures are the claim

In a design patent, the drawings are not illustrations of the invention; they are the invention. A single sentence claims "the ornamental design for [the article] as shown and described," and everything turns on what the figures depict. Three drafting conventions carry enormous strategic weight:

  • Solid vs. broken lines. Solid lines are claimed; broken (dashed) lines show environment or unclaimed portions and are disclaimed from the design. Converting features to broken lines broadens the claim by removing limitations. Deciding what to claim in solid versus broken line is the core scoping decision.
  • Surface shading. Shading conveys contour and whether a surface is open, transparent, or solid. Inconsistent or missing shading is a frequent ground for rejection under 35 U.S.C. § 112 for lack of enablement or definiteness.
  • Views. A design generally requires enough views (front, rear, top, bottom, left, right, perspective) to fully disclose the appearance. Views may be omitted only when truly redundant (e.g., a flat or mirror-image surface), and the omission must be stated.

Errors here are often fatal and hard to fix, because adding subject matter after filing risks new-matter rejections. Invest in professional drawings.

A subtle but powerful strategy is to file a family of design applications claiming the same product at different levels of generality by varying what is shown in solid versus broken line. A "picture claim" rendering the entire product in solid line is narrow but unmistakable; a broader sibling that disclaims (dashes out) everything except the single distinctive feature captures copyists who change peripheral details. Because the claim scope is set by line type, thinking through the broken-line strategy before filing—not after a competitor appears—is the difference between an enforceable portfolio and a paper one.

Illustration. A company patents a running shoe. If the sole tread, the laces, and the heel counter are all in solid line, an infringer who merely restyles the laces escapes. If a companion application claims only the distinctive midsole wave in solid line and dashes out everything else, the same restyled-lace competitor still infringes the midsole claim. Same product, two filings, dramatically different coverage.

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Stage 4 — Prosecute the application

Design prosecution differs from utility prosecution in important ways. There is exactly one claim. Examination focuses on formalities (drawing sufficiency), novelty, and obviousness rather than on parsing claim language. Restriction practice is common: if an application discloses patentably distinct designs (e.g., multiple embodiments that are not obvious variants of one another), the examiner may require the applicant to elect one and pursue the others in divisional applications. Design applications are not published before grant unless filed via the Hague system, so prosecution is typically confidential until issuance.

For international protection, the Hague Agreement (administered by WIPO) allows a single international design application designating multiple member jurisdictions, including the United States. Continuation and continuation-in-part practice can extend a design family, and well-planned families with multiple embodiments and varying broken-line scope build durable portfolios.

Two timing points deserve emphasis. First, design patents are examined and issue far faster than utility patents in many cases, but they enjoy no provisional-application route—there is no design provisional. Second, the United States observes a one-year grace period for the inventor's own pre-filing disclosures (35 U.S.C. § 102(b)(1)), but most foreign jurisdictions do not; a public disclosure before filing can forfeit foreign design rights. Coordinate the public launch with the filing calendar. Finally, design applications enjoy priority benefits: a U.S. design application can claim priority to a foreign design application filed within six months under the Paris Convention.

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Stage 5 — Clear the validity hurdles: functionality, novelty, and obviousness

A design patent is invalid if the claimed design is primarily functional rather than ornamental. The test looks to whether the appearance is dictated by function—courts weigh factors such as the existence of alternative designs achieving the same function, whether the design represents the best engineering solution, and advertising touting utilitarian advantages. Individual functional features within an overall ornamental design do not by themselves doom the patent, but they may be filtered out of the infringement comparison.

Obviousness under 35 U.S.C. § 103 is where the law just shifted dramatically. For decades the Federal Circuit applied the rigid Rosen–Durling framework, which required a single primary reference "basically the same" as the claimed design before secondary references could be combined. In LKQ Corp. v. GM Global Technology Operations (Fed. Cir. 2024) (en banc), the court overruled Rosen and Durling and held that design-patent obviousness must follow the flexible Graham v. John Deere approach used for utility patents—analyzing the scope and content of the prior art, the differences from the claimed design, the level of ordinary skill, and objective indicia. This makes some design patents easier to challenge and reshapes both prosecution strategy and invalidity defenses.

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Stage 6 — Analyze infringement: the ordinary-observer test

Design-patent infringement is judged by the ordinary observer test set out in Gorham Co. v. White, 81 U.S. 511 (1871) and modernized by the en banc Federal Circuit in Egyptian Goddess, Inc. v. Swisa, Inc., 543 F.3d 665 (Fed. Cir. 2008). The question is whether an ordinary observer, giving such attention as a purchaser usually gives, would be deceived into believing the accused design is the same as the patented design—viewing the two designs as a whole. Egyptian Goddess abolished the separate "point of novelty" test and instead instructed courts to conduct the ordinary-observer comparison in light of the prior art: where the claimed and accused designs are not plainly dissimilar, the prior art sharpens the comparison and the differences between the claimed design and the prior art become central.

Practically, this means infringement analysis is a three-way visual comparison among the patented design, the accused product, and the closest prior art. Claim construction in design cases is typically minimal—courts usually let the drawings speak rather than translating them into words—but functional features may be factored out.

A counterintuitive consequence of the prior-art-informed test: a crowded field helps the patentee on infringement. Where many similar prior designs exist, small differences loom large, so an accused design that is closer to the patent than to the prior art will more readily be found to infringe—but the same crowded field that sharpens infringement also narrows the patent's scope and exposes it to invalidity. The patentee thus walks a tightrope, and a defendant's best move is often to find prior art that is closer to the patent than the accused product is.

Illustration. A patent claims a minimalist rectangular tablet with rounded corners. If the prior art is full of rectangular tablets with rounded corners, an ordinary observer—now educated by that prior art—will focus on the fine details that distinguish the patent, and an accused tablet sharing those fine details infringes; one that differs in them does not. This is exactly the dynamic that drove the Apple v. Samsung design-patent disputes.

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Stage 7 — Capture the remedy: total profits under § 289

Design patents carry a uniquely powerful damages remedy. Under 35 U.S.C. § 289, an infringer is liable for its total profit from the article of manufacture to which the patented design is applied—not merely a reasonable royalty or the profit attributable to the design feature. This "disgorge the whole profit" rule is what made design patents central to the smartphone wars.

In Samsung Electronics Co. v. Apple Inc., 580 U.S. 53 (2016), the Supreme Court held that the relevant "article of manufacture" for § 289 need not be the entire end product sold to consumers; it may be a component of that product. The Court declined to set a full test for identifying the relevant article, leaving lower courts to develop multi-factor approaches. The result: total-profit awards remain available, but litigants now fight hard over which article of manufacture supplies the profit base. A patentee may alternatively seek § 284 damages (reasonable royalty / lost profits), but not double recovery.

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Stage 8 — Enforce and maintain the design patent

Two practical points round out the life cycle. First, marking. To recover pre-suit damages, a patentee that makes or sells the patented article should mark it with the patent number (or "patent" plus a free public web address under virtual marking, 35 U.S.C. § 287). Failure to mark generally limits damages to the period after actual notice. Avoid false marking under § 292. Second, enforcement strategy: design-patent cases can move quickly because liability turns on a visual comparison rather than complex claim construction, but defendants will press functionality and—post-LKQ—obviousness aggressively. Consider the full toolkit of remedies: injunctions, § 289 total profits, ITC exclusion orders for imported goods, and customs recordation.

Note that design patents require no maintenance fees, so the only "upkeep" is enforcement vigilance and marking discipline over the 15-year term.

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This toolkit is general information, not legal advice. Verify all fees, deadlines, and current rules at the official USPTO site before acting.