Trademark vs copyright for a product design

Key takeaways

• Copyright protects only artistic features that can be identified separately from the article's utilitarian function.
• Trade dress — part of trademark law — can protect a product's appearance, but only if it is non-functional and consumers associate it with you.
• A design patent is often the right answer for a new product's appearance, and it is the one with a deadline.

The short answer

Neither copyright nor trademark is the primary tool. A design patent usually is.

Copyright excludes useful articles. Trademark protects appearance only once customers recognise it as yours, which takes years. Design patents were built for exactly this: the ornamental appearance of a manufactured article, protected for 15 years from grant.

What copyright can reach

Under the separability doctrine — clarified by the Supreme Court in Star Athletica v. Varsity Brands (2017) — a design feature of a useful article is copyrightable if it can be perceived as a two- or three-dimensional work of art separate from the article, and would qualify as a protectable work if imagined separately.

In practice that means the pattern printed on a chair might be copyrightable; the chair's shape, insofar as it makes the chair a chair, is not.

Copyright also covers the drawings, CAD files and technical documentation you produced along the way, as pictorial or graphic works. That is worth knowing: your design record is copyrightable even where the product is not.

What trade dress can reach

Trade dress protects the overall look of a product or its packaging as an indicator of source. Two requirements, both demanding:

• Non-functionality. If a feature exists because it works better, it cannot be trade dress. Functionality is for patents.
• Secondary meaning. For product design specifically, the Supreme Court held in Wal-Mart v. Samara Brothers (2000) that trade dress is never inherently distinctive — you must show that consumers have come to associate the design with a single source.

That takes sustained sales and marketing. It is a right you earn over years, not one you obtain at launch.

Side by side

The deadline nobody mentions

Design patents have a filing deadline tied to public disclosure. In the US there is a one-year grace period after your own disclosure; in most other countries there is no grace period at all, and showing the design publicly before filing destroys novelty.

This is the single most expensive mistake in product design IP, and it is made by people who assumed copyright had them covered.

Where a timestamp fits

Design work generates exactly the kind of record this is useful for: iterations of CAD files, renders, prototype photographs, specification documents — all of it confidential, and all of it dated.

Two concrete uses. Before filing, a timestamp establishes that you held a design on a date without disclosing it to anyone, which matters when novelty is the thing you are protecting. Before a disclosure — a factory, a prospect, a trade show — a dated record of what you had going in is what you will want if something similar appears afterwards.

This is the use case behind our own most common orders. A timestamp proves the file existed and is unchanged; it does not prove you designed it, and it is not a substitute for filing. See how to timestamp design files.

US law, with a note on international filing. This is general information, not legal advice — design patent deadlines in particular are unforgiving and worth professional input.