Design Patent Toolkit: Filing, Scope, and Enforcement

By Casey Scott McKay · 2026-03-13

Design patents are the cheapest and fastest exclusionary right in the American system, and most companies that should hold them do not. This toolkit covers what a design patent actually claims, why the drawings are the claim and broken lines are the most consequential drafting decision available, and how the ordinary observer test from Egyptian Goddess governs infringement. It works obviousness after LKQ replaced the rigid Rosen-Durling framework with the flexible KSR approach, and the functionality limits that invalidate designs dictated by use. It sets out filing strategy - grace periods, foreign absolute novelty, the Hague route, and continuation practice - and then enforcement, including total profits under Section 289 and the article of manufacture question after Samsung v. Apple.

IP and Technology > Patent Counseling Transactions | Toolkit | Published 13 March 2026 - Updated 30 May 2026 | Casey Scott McKay - marksy.us

Summary. Design patents are the cheapest and fastest exclusionary right in the American system, and most companies that should hold them do not. This toolkit covers what a design patent actually claims, why the drawings are the claim and broken lines are the most consequential drafting decision available, and how the ordinary observer test from Egyptian Goddess governs infringement. It works obviousness after LKQ replaced the rigid Rosen-Durling framework with the flexible KSR approach, and the functionality limits that invalidate designs dictated by use. It sets out filing strategy — grace periods, foreign absolute novelty, the Hague route, and continuation practice — and then enforcement, including total profits under Section 289 and the article of manufacture question after Samsung v. Apple.

Keywords: design patents · article of manufacture · ornamental design · drawing practice · broken lines · claim scope · Egyptian Goddess ordinary observer · LKQ obviousness · Rosen reference · functionality · filing deadlines · grace period · Hague Agreement · continuation practice · total profits · Samsung v Apple · marking and notice · trade dress overlay · portfolio sequencing · enforcement strategy

Start Here

A hardware company launches a product. The industrial design took eighteen months and three rounds of user testing, and the result is distinctive enough that people recognise it across a room.

Six months later a competitor ships something that looks remarkably similar. The company calls its patent counsel and asks what can be done.

The answer depends entirely on a decision nobody made deliberately eighteen months earlier: whether to file a design patent application before the product was shown publicly. If that filing happened, the company has a fifteen-year exclusionary right, an infringement test that asks whether an ordinary observer would be deceived, and a remedy that reaches the infringer's total profits. If it did not, the company has a trade dress claim requiring secondary meaning it probably cannot yet prove, and a conversation about what it should have done.

This toolkit answers three questions.

What does a design patent actually cover? The drawings are the claim, and what is shown in solid lines is what is claimed.
When must it be filed? Before public disclosure for most of the world, and within a year in the United States.
What is it worth in enforcement? Uniquely, the infringer's total profits on the article — subject to a question the Supreme Court left open.

If you read only one thing, read The Patent Nobody Files. It explains why the ordinary observer test makes design patents easier to enforce than utility patents and what LKQ changed about validity.

What a Design Patent Claims

The statutory grant. 35 U.S.C. § 171 permits a patent for any new, original, and ornamental design for an article of manufacture.

Three requirements. New — not anticipated under 35 U.S.C. § 102. Original and non-obvious under 35 U.S.C. § 103. And ornamental, meaning not dictated solely by function.

Article of manufacture. The design must be applied to an article. A design in the abstract is not patentable, and the article identified in the claim matters — both for validity and, after Samsung Electronics v. Apple, for damages.

One claim only. A design patent contains a single claim, in the prescribed form: "The ornamental design for [article], as shown and described."

The drawings are the claim. Everything meaningful about scope is decided in the drawings, which is why design patent practice is fundamentally a drawing exercise rather than a claim-drafting one.

Term. Fifteen years from grant under 35 U.S.C. § 173, with no maintenance fees. This is one of the quiet advantages: a utility patent requires payments at years four, eight, and twelve under 35 U.S.C. § 41; a design patent does not.

Cost. A fraction of a utility patent, with much faster allowance in most art units.

Drawing Practice, Where Scope Is Decided

Solid lines claim. Broken lines disclaim. Anything shown in broken lines forms no part of the claimed design and is present only to show environment or context.

The strategic consequence. A design shown entirely in solid lines is narrow — an accused product must match the whole thing. A design showing the distinctive element in solid lines and the rest in broken lines is broader, because the unclaimed portions are irrelevant to infringement.

This is the highest-leverage decision in the whole area, and it is made by whoever prepares the drawings, frequently without legal input.

Views required. Enough views to disclose the design completely — typically front, rear, left, right, top, bottom, and a perspective. Omitting a view can raise enablement and definiteness problems.

Surface shading. Used to show contour and shape. Its presence or absence changes what is disclosed, and inconsistency across views draws rejections.

Photographs. Permitted in limited circumstances, and generally worse than drawings because they capture features the applicant may not intend to claim.

Written description. Minimal, but the description of the views and any statements about broken lines carry weight.

Continuations for scope. File a continuation claiming a different portion of the design in solid lines. This is the design patent equivalent of a claim set, and companies with valuable designs should be filing families rather than single applications.

Amendments are constrained. Converting solid lines to broken lines after filing risks a new matter objection, depending on what the original disclosure supported. Get it right at filing.

Infringement: The Ordinary Observer

The test. Egyptian Goddess v. Swisa, decided en banc, holds that the sole test for design patent infringement is whether an ordinary observer, giving such attention as a purchaser usually gives, would be deceived into believing the accused design is the patented design.

What it abolished. The separate "point of novelty" test, which had required the patentee to identify a specific novel feature appropriated by the accused design.

How prior art enters. The comparison is made in light of the prior art. Where the claimed design is close to prior art, small differences matter more; where the field is uncrowded, the comparison is broader.

Three-way comparison. In close cases the fact-finder compares the claimed design, the accused design, and the closest prior art.

No element-by-element analysis. Unlike utility patents, the comparison is of overall visual impression, which is why design patents are frequently easier to enforce.

Functional features are filtered. Where a feature is dictated by function, it is discounted in the comparison.

Claim construction is limited. Courts generally decline to construct a detailed verbal description of the claimed design, because translating drawings into words distorts them.

Practical consequence. A design patent case turns on a side-by-side visual comparison presented to a jury. That is a materially different litigation from a utility patent case, and it is faster and cheaper.

Validity: Novelty, Obviousness, and Functionality

Anticipation. 35 U.S.C. § 102 applies, and the test for anticipation of a design mirrors the ordinary observer test: a single prior art reference that would appear substantially the same to an ordinary observer anticipates.

Obviousness before LKQ. The Rosen-Durling framework required a primary reference with design characteristics basically the same as the claimed design, then secondary references so related that features would suggest application. That was a demanding, rigid test, and it made design patents difficult to invalidate.

Obviousness after LKQ Corp. v. GM Global Technology Operations. The Federal Circuit, en banc, overruled that framework and directed the flexible approach of Graham v. John Deere and KSR International v. Teleflex. The primary reference need not be basically the same, and the analysis considers the scope and content of the prior art, differences, the level of ordinary skill, and secondary considerations.

What that means practically. Design patents are somewhat easier to invalidate than they were, which raises the value of genuinely distinctive designs and lowers the value of minor variations on existing shapes.

Functionality. A design dictated solely by function is not ornamental and is invalid. The analysis considers whether alternative designs exist that would perform the same function, whether advertising touts functional advantages, and whether the design results from a purely utilitarian concern.

Alternative designs are the key evidence. Where several designs would work equally well, the chosen one is ornamental.

Enablement and definiteness. 35 U.S.C. § 112 applies, and inconsistent or incomplete drawings can render a design patent invalid.

Filing Strategy and Deadlines

The US grace period. 35 U.S.C. § 102(b) provides a one-year grace period for the inventor's own disclosures. A design shown publicly must be filed within a year.

Most of the world has none. Absolute novelty applies in most jurisdictions, so any public disclosure before filing destroys foreign rights.

Therefore: file before disclosure. Trade shows, product reveals, website images, regulatory filings, and investor presentations are all disclosures.

Build a disclosure gate. No public showing of a new industrial design without a filing decision. This is the single control that prevents the most common loss.

The Hague route. The Hague Agreement permits a single international application designating multiple jurisdictions, implemented domestically at 35 U.S.C. § 382 and following. Useful for portfolios covering several markets.

Paris priority. 35 U.S.C. § 119 provides a six-month priority period for designs, shorter than the twelve months for utility applications. Miss it and the priority claim is gone.

Foreign filing licence. 35 U.S.C. § 184 applies to designs as to utility applications, and the receipt should be checked. See The Technology That Cannot Leave the Room.

Continuations. File to claim different portions, different scopes, and design variations. A single design patent on a valuable product is under-protection.

Expedited examination is available for designs and is worth the fee where a competitor's launch is anticipated.

Remedies, and the Total Profits Question

35 U.S.C. § 289 provides that whoever applies the patented design to any article of manufacture for sale is liable to the extent of the infringer's total profit, but not less than $250. There is no apportionment requirement in the text.

Why this matters enormously. For utility patents, damages under 35 U.S.C. § 284 require apportionment to the patented feature's contribution. For design patents, the statute awards total profit on the article.

Samsung Electronics v. Apple held that the "article of manufacture" to which the design is applied may be the entire product or only a component of it, rejecting the Federal Circuit's rule that it must always be the end product sold to consumers.

What the Court did not decide. The test for identifying the relevant article of manufacture. Lower courts have applied multi-factor approaches considering the scope of the design as claimed, the relative prominence of the design within the product, whether the design is conceptually distinct from the product as a whole, and the physical relationship between the patented design and the rest of the product.

The drafting consequence. How the article is identified in the claim, and how much of the product is shown in solid lines, now bears directly on damages. A design claimed as applied to an entire product supports a total-profits argument on that product.

Alternative remedies. 35 U.S.C. § 284 damages remain available, and a patentee elects. Injunctive relief under 35 U.S.C. § 283 is governed by eBay v. MercExchange.

Marking. 35 U.S.C. § 287 limits pre-notice damages where patented articles are not marked. For a consumer product this is straightforward and frequently overlooked.

The Trade Dress Overlay

Design patents and trade dress reach the same subject matter from different directions, and a company protecting a product's appearance should understand both.

Trade dress protects source identification. 15 U.S.C. § 1125 reaches unregistered trade dress, and registration is available under 15 U.S.C. § 1052.

Product design always needs secondary meaning. Wal-Mart Stores v. Samara Brothers holds that product design trade dress can never be inherently distinctive. That is a substantial burden, requiring evidence of consumer association built over time.

Product packaging can be inherently distinctive, following Two Pesos v. Taco Cabana, which is why packaging trade dress is available immediately in a way product configuration is not.

Functionality is the bar. TrafFix Devices v. Marketing Displays holds that a feature is functional if it is essential to the use or purpose of the article or affects its cost or quality, and that an expired utility patent is strong evidence of functionality for the features it claimed.

The complementary timing. A design patent is available immediately on filing and expires fifteen years after grant. Trade dress requires years of use to build secondary meaning but can then run indefinitely. Filed together, the design patent covers the period during which trade dress rights are accruing.

The overlap risk. A trade dress claim that is really an attempt to perpetuate an expired design patent will draw the TrafFix objection and the judicial resistance to using one regime to extend another.

Copyright as a third layer. Where the design includes separable pictorial, graphic, or sculptural features, copyright may apply following Star Athletica v. Varsity Brands, which established the separability test for features of useful articles.

Practical sequencing. File the design patent before disclosure. Register any copyrightable surface designs. Begin building trade dress evidence — advertising, sales, unsolicited media, and consumer surveys — from launch. See Layering Protection for a Product Design.

Building a Design Portfolio

Companies that use design patents well treat them as a programme rather than as occasional filings.

A design intake. Industrial design and product management notify legal when a new design reaches a stable state, before any external showing.

A disclosure gate. No trade show, reveal, website posting, or investor deck containing a new design without a filing decision recorded. This single control prevents most losses.

A filing standard. For each significant design, an application on the whole design and at least one continuation claiming the distinctive portion in solid lines with the remainder in broken lines.

Foreign coverage matched to markets. The Hague route where several jurisdictions matter; direct filings where one or two do. Remember the six-month Paris priority period under 35 U.S.C. § 119, which is shorter than most people assume.

A marking process. 35 U.S.C. § 287 limits pre-notice damages, and for consumer products marking is easy and frequently omitted. Virtual marking — a notice directing to a website listing the patents — is permitted and is the practical approach for products with changing portfolios.

An expiry register. Fifteen years from grant, with no maintenance fees to prompt a review. Designs expire quietly, and a portfolio without an expiry register overstates what the company holds.

A competitive watch. Monitor competitor product launches and design patent filings. Design patent applications publish on grant rather than at eighteen months, so competitor filings are less visible than utility applications — which cuts both ways.

A cost model. Design patents cost a fraction of utility patents, so a portfolio of thirty designs is achievable at a budget that would fund three utility applications. Frame the choice that way for the business.

Enforcement Strategy

Start with the visual comparison. Prepare the side-by-side exhibit — patent drawings against accused product photographs — before writing anything. If it does not persuade the person who prepared it, it will not persuade a jury.

Assess the prior art. Under Egyptian Goddess the comparison is made in light of the prior art, and a crowded field narrows the effective scope.

Assess validity honestly after LKQ. The flexible obviousness framework makes invalidity a more realistic defence than it was, and a design that is a modest variation on known shapes is now more vulnerable.

Check functionality exposure. Advertising that touts the design's functional advantages is the defendant's best evidence, and a company's own marketing frequently supplies it.

Model the remedy. 35 U.S.C. § 289 total profits is the distinguishing feature, and the article of manufacture analysis after Samsung Electronics v. Apple determines whether the base is the whole product or a component.

Consider the ITC. 19 U.S.C. § 1337 offers exclusion orders where importation is involved and a domestic industry exists, and the timeline is faster than district court. See Section 337 at the ITC.

Consider Customs recordation for the trade dress and trademark layers, under 19 C.F.R. § 133.1.

Consider marketplace enforcement. Design patents are accepted by most large marketplace brand programmes, and removal is faster than any litigation.

Send the letter with the pictures. A demand letter containing the drawings and the accused product photograph does the work that a claim chart does in a utility case, and it does it in one page.

Prosecution Mechanics

Design prosecution is short, and the small number of decisions available carry disproportionate weight.

The application. Drawings, a single claim in the prescribed form, a title identifying the article, a brief description of the views, and the oath or declaration. 37 C.F.R. § 1.152 and 37 C.F.R. § 1.153 govern.

The title matters. It identifies the article of manufacture, which bears on both the prior art searched and, after Samsung Electronics v. Apple, the damages base. "Electronic device" and "portion of an electronic device housing" are different claims in substance.

Common rejections. Inconsistency between views. Insufficient views to disclose the design. Improper broken line use. Shading that obscures rather than clarifies. Most are drawing problems and most are fixable, provided the original disclosure supports the fix.

New matter is the constraint. Amendments that change what the drawings disclose are new matter. Converting solid lines to broken lines is sometimes permitted where the original disclosure supports it and sometimes not, and the safe course is to file the variants at the outset.

Restriction. Where an application discloses multiple distinct designs, restriction follows, and the non-elected designs go into divisionals. Anticipate it by filing separately where the designs are genuinely different.

Expedited examination under the design-specific procedure requires a fee and a pre-examination search, and it materially shortens pendency where a competitor launch is anticipated.

Publication. Design applications are not published at eighteen months in the way utility applications are; they publish on grant. That gives a period of confidentiality that can be useful and that also means competitor filings are invisible until issue.

Continuations. File before allowance issues to keep the family alive, and use them to claim different portions. This is the single most underused technique in design practice.

Reissue. 35 U.S.C. § 251 is available for designs, including broadening reissue within two years of grant — which is one route to correcting a solid-line decision that turned out to be too narrow.

Where Design Patents Fit Badly

Honest limits, because a toolkit that only advocates is not useful.

Purely functional articles. Where the shape is dictated by the function, there is no ornamental design and the patent will be invalid.

Rapidly changing designs. A product refreshed annually may not justify filings on each iteration, though the cost is low enough that the calculation frequently favours filing anyway.

Designs already disclosed abroad. Absolute novelty in most jurisdictions means foreign rights are gone, and the US grace period under 35 U.S.C. § 102 supplies only a year.

Trivial variations. After LKQ, a modest variation on known shapes is more vulnerable to obviousness than it was under the prior framework.

Where the value is in the interface, not the object. Graphical user interface designs are patentable as designs for an article of manufacture, but the article identification and the claim scope questions are unsettled enough to require care.

Where the competitor will design around easily. A narrow claim on a whole product invites a modest change that escapes it. This is an argument for continuations claiming portions, not against filing.

Where trade secrecy is the better answer. A design that is not visible in the product — internal geometry, for instance — is not a design anyone will copy from the market, and secrecy may serve better. See Choosing Your Protection Toolkit.

Common Mistakes

Disclosing before filing, destroying foreign rights entirely and starting the US grace period clock.

Claiming the whole design in solid lines with no continuation claiming the distinctive portion, which produces a patent a competitor escapes with a minor change.

Letting the drawings be prepared without legal input, when the drawings are the claim.

Inconsistent views, which draw rejections and can support invalidity arguments.

Missing the six-month Paris priority period under 35 U.S.C. § 119, which is half the utility period and catches practitioners who work from habit.

Filing one application per product rather than a family.

Marketing that touts functional advantages of the design, supplying the functionality defence.

Not marking, and losing pre-notice damages under 35 U.S.C. § 287.

Failing to track the fifteen-year expiry, because no maintenance fees prompt a review.

Treating the design patent as the whole strategy, when trade dress and copyright layers run alongside it on different timelines.

Ignoring the article of manufacture question in drafting, when Samsung Electronics v. Apple made it a damages issue.

Overlooking the foreign filing licence under 35 U.S.C. § 184, which applies to designs as it does to utility applications.

What This Costs, Honestly

Preparation and filing. A single design application with professional drawings is a small fraction of a utility application. For most companies the drawings are the largest line item, and they are worth paying for properly because they are the claim.

Prosecution. Frequently one office action or none, and allowance in a period measured in months rather than years. Expedited examination shortens it further for a fee.

Grant and term. Fifteen years from grant under 35 U.S.C. § 173, with no maintenance fees — a meaningful lifetime cost advantage over utility patents, which require payments under 35 U.S.C. § 41.

A family. Two or three continuations claiming different portions multiplies the filing cost but not proportionally, because the drawings are largely reusable.

Foreign coverage. The Hague route under 35 U.S.C. § 382 reduces the per-jurisdiction cost where several markets matter; direct filings are simpler for one or two.

Enforcement. Materially cheaper than utility patent litigation because there is no claim construction proceeding of the Markman kind, no element-by-element infringement analysis, and no expert battle over technical equivalence. The case is a visual comparison.

The comparison that matters. For the cost of one utility application, a company can obtain a family of design patents covering its most distinctive products, with a faster grant, a longer effective enforcement window in fast-moving markets, and a damages provision — 35 U.S.C. § 289 — with no apportionment requirement.

Where the spend is wasted. Filings on designs nobody will copy, filings after disclosure has already destroyed foreign rights, and single filings on products that needed families.

Worked Example: The Consumer Device

A company designs a countertop appliance with a distinctive silhouette and an unusual control ring.

Month 0. Industrial design freezes. Legal is notified through the design intake before any external showing.

Month 1. Three applications are filed. The first claims the whole product in solid lines. The second claims the control ring in solid lines with the body in broken lines. The third claims the silhouette in solid lines with surface detail in broken lines. Drawings are prepared professionally with seven views each.

Month 1. The Hague application designates the three markets where the product will launch, within the six-month Paris window under 35 U.S.C. § 119.

Month 2. The product is revealed at a trade show. Because filing preceded disclosure, foreign rights survive.

Month 9. The first patent grants. Marking begins — virtual marking with a website listing, which accommodates the later grants without repackaging.

Month 18. A competitor ships a product with a similar control ring on a different body. The whole-product patent does not read on it. The control ring patent does, and the side-by-side exhibit is straightforward.

Month 19. A demand letter with the drawings and photographs. The competitor's first response argues obviousness under LKQ; the prior art search shows nothing close to the ring.

Month 22. Settlement on a running royalty. The remedy exposure under 35 U.S.C. § 289 — total profits on an article of manufacture, with the article question open after Samsung Electronics v. Apple — drove the number far more than any lost profits analysis would have.

What made it work. The continuation claiming the ring. Without it, the company would have held one patent covering a whole product the competitor did not copy, and the answer to the client would have been that nothing could be done.

The One-Page Position

Design portfolio position — [company], [date]. Active design patents: [N] across [N] product families; [N] pending; [N] foreign counterparts in [markets]. Families with a portion-claiming continuation: [N] of [N]. Disclosure gate operating since [date]; [N] designs filed before public showing, [N] filed under the grace period. Expiries within twenty-four months: [N], affecting [products]. Marking: [physical / virtual] since [date]. Trade dress: secondary meaning evidence being accumulated for [N] designs, with [surveys / sales / advertising] on file. Functionality exposure: marketing reviewed [date]; [N] statements touting functional advantages remediated. Enforcement: [N] demand letters, [N] marketplace removals, [N] litigations; remedies asserted under 35 U.S.C. § 289. Recommended actions: [file continuations on families X and Y / file before the reveal of Z / remediate marketing copy / begin survey evidence for the flagship design].

Sector Notes

Consumer electronics. High-value designs, fast product cycles, and a fifteen-year term that comfortably outlasts the product. Portion claims on distinctive elements matter more than whole-product claims because competitors copy features rather than products.

Furniture and housewares. Long product lives, heavy copying, and a functionality defence that is frequently raised and frequently fails where alternative designs exist. Design patents are unusually effective here.

Automotive parts. The most contested area, because 35 U.S.C. § 289 total profits on a replacement panel is a substantial remedy and the aftermarket depends on making parts that match. Right-to-repair legislation and the article of manufacture analysis after Samsung Electronics v. Apple both bear on it.

Apparel and footwear. Fast cycles, heavy copying, and a mix of design patents on distinctive elements — a sole pattern, a closure mechanism — alongside trade dress and copyright on surface designs following Star Athletica v. Varsity Brands.

Medical devices. Regulatory approval timelines create a disclosure risk, because submissions and clinical use can precede a filing decision. Build the gate into the regulatory process.

Packaging. Design patents on container shapes complement packaging trade dress, which under Two Pesos v. Taco Cabana can be inherently distinctive — making the two layers unusually well matched.

Graphical user interfaces. Patentable as designs for an article of manufacture, with the article identification and scope questions less settled than for physical products. Worth filing where the interface is a competitive differentiator.

Toys and merchandise. Character merchandise sits at the intersection of design patents, copyright in the character, and trademark in the name. See Protecting and Licensing a Character or Franchise.

Questions Clients Ask

How long does it take? Months rather than years in most art units, and faster with expedited examination.

Can we file after we launch? In the United States, within a year under 35 U.S.C. § 102. In most other jurisdictions, no — absolute novelty applies and the rights are gone.

Does it cover a different colour? Colour is generally not claimed unless shown, so a colour variation of the same shape typically still infringes.

Does it cover a different size? Yes. Scale is not part of the claimed design.

What if the competitor changes one feature? That is exactly why continuations claiming portions matter. A whole-product claim is escaped by a modest change; a portion claim is not.

Can we get an injunction? 35 U.S.C. § 283 with the eBay v. MercExchange factors. Design patent plaintiffs frequently do well on irreparable harm where the design drives purchasing.

Is it really total profits? 35 U.S.C. § 289 says so, with no apportionment in the text. The open question after Samsung Electronics v. Apple is which article of manufacture — the whole product or a component.

Should we do this instead of a utility patent? Usually alongside, not instead. They protect different things: how it looks and how it works. See Choosing Your Protection Toolkit.

What about our contractor designer? Get a written assignment under 35 U.S.C. § 261. Absent one, the designer owns the design.

Do we have to do anything to keep it? No maintenance fees. Which is convenient and is also why expiries arrive unannounced — keep the register.

Diligence and Transactions

Verify the register, not the schedule. Design patents expire fifteen years from grant with no maintenance fees, so nothing prompts a review and schedules go stale quietly.

Check the drawings against the products. A portfolio of design patents on discontinued products is a cost, not an asset. Map each patent to a current or planned product.

Check for portion claims. A family with only whole-product claims is materially weaker than one with continuations claiming distinctive elements, and the difference should be priced.

Check the filing dates against disclosure dates. A design filed after public disclosure has no foreign rights and may have US validity exposure if the grace period was exceeded.

Check assignments. Industrial designers are frequently contractors, and 35 U.S.C. § 261 requires a written assignment. Unassigned designs are a common finding.

Check inventorship. Design patents name inventors, and a design created collaboratively with an outside firm may have inventorship problems that correction under 35 U.S.C. § 256 can address.

Check marking practice. Unmarked products limit pre-notice damages under 35 U.S.C. § 287, which affects the value of any pending or contemplated enforcement.

Check functionality exposure in marketing. Advertising claims about the design's functional advantages are the defence's best evidence and they live on the company's own website.

Check the trade dress position separately. Secondary meaning evidence, registrations, and any oppositions. See Trade Dress Protection Checklist.

Check foreign counterparts. Hague designations, national filings, and their status, because a design registered in the launch markets is worth substantially more than a US-only filing for a product sold globally.

The Decision Framework

For any new industrial design, five questions in order.

One — is it visible and distinctive? A design nobody sees in the market will not be copied from the market, and a design indistinguishable from what exists will not survive LKQ obviousness. Both answers point away from filing.

Two — has it been disclosed? If yes and more than a year has passed, US rights are gone under 35 U.S.C. § 102. If yes and within a year, US filing is still available but foreign rights are not.

Three — what is the distinctive element? That determines the continuation strategy, and it is the question that decides whether the portfolio is enforceable against a competitor who copies a feature rather than a product.

Four — is any of it functional? Features dictated by function are discounted in the infringement comparison and can invalidate the patent. Identify them before drafting, and check the marketing copy.

Five — what else applies? Trade dress on a longer timeline, copyright on separable surface features after Star Athletica v. Varsity Brands, and utility patents on how it works. Design patents rarely stand alone.

Answer those five, file before disclosure, claim the portions as well as the whole, and mark the product. That is the entire discipline, and companies that follow it hold enforceable rights in their product appearance for a fraction of what they spend on utility patents that never issue.

A Suggested Reading Path

For the doctrine:

For the practice:

For the trade dress overlay:

Primary Authorities

| Authority | Proposition | |---|---| | 35 U.S.C. § 171 | Design patents; ornamental design for an article | | 35 U.S.C. § 172 | Right of priority for designs | | 35 U.S.C. § 173 | Fifteen-year term | | 35 U.S.C. § 102 | Novelty; grace period | | 35 U.S.C. § 103 | Obviousness | | 35 U.S.C. § 112 | Enablement and definiteness | | 35 U.S.C. § 119 | Six-month design priority | | 35 U.S.C. § 184 | Foreign filing licence | | 35 U.S.C. § 283 | Injunctions | | 35 U.S.C. § 284 | Damages | | 35 U.S.C. § 287 | Marking and notice | | 35 U.S.C. § 289 | Total profits | | 35 U.S.C. § 382 | Hague international applications | | 37 C.F.R. § 1.152 | Design drawings | | 37 C.F.R. § 1.153 | Title, description, and claim | | Egyptian Goddess v. Swisa | Ordinary observer as sole test | | LKQ Corp. v. GM Global Technology | Flexible obviousness for designs | | KSR International v. Teleflex | Flexible obviousness framework | | Graham v. John Deere | Obviousness factors | | Samsung Electronics v. Apple | Article of manufacture for total profits | | eBay v. MercExchange | Injunction standard | | Wal-Mart Stores v. Samara Brothers | Product design needs secondary meaning | | TrafFix Devices v. Marketing Displays | Functionality bar in trade dress | | 15 U.S.C. § 1125 | Unregistered trade dress |

Forms and Templates

The Portfolio Inventory Template is where a design portfolio should live, because design families multiply quickly and the useful record is one row per design showing the product, the claimed portion, the filing date, the grant date, the fifteen-year expiry, and the foreign counterparts. A design portfolio that exists only in a docketing system is invisible to the product team that most needs to know what is protected. The Cease and Desist Template works unusually well for design patents, because the enforcement argument is a side-by-side image rather than a claim chart, and a letter with the patent drawings alongside the accused product photograph makes the case without a page of analysis. The License Agreement Template is the vehicle where a design is licensed for merchandise or components, and the grant should identify the design patents by number rather than by description. The Assignment Agreement Template matters because industrial designers are frequently contractors, and a design created by a contractor without a written assignment leaves ownership with the designer under 35 U.S.C. § 261.

Related Toolkits and Checklists

The Layered Design Protection Toolkit sequences design patents against trade dress and copyright, which is the analysis that should precede any single-regime decision. The Design Patent Checklist runs the filing and enforcement steps in order. For the broader patent context, the Patent Fundamentals Toolkit covers the utility side and the Patent Prosecution Toolkit covers prosecution mechanics. Where enforcement moves to the border, the Anticounterfeiting and Border Enforcement Toolkit covers recordation and seizure, and the Patent Damages and Remedies Toolkit covers the remedies analysis including the total profits election.