Korean 3D Trademarks: Protecting Product Shape Indefinitely

The curve of a soda bottle, the triangular wedge of a chocolate bar, the rectangular silhouette of a lighter — some shapes are so distinctive that consumers recognize the brand without seeing a name. Korean Trademark Act lets you register such shapes as 3D trademarks, and once registered, you can renew them indefinitely. That's the structural reason Coca-Cola's contour bottle has stayed protected for over a century — design rights expire in 20 years, but a 3D trademark protects forever as long as use continues. The catch: the distinctiveness bar is high.

3D trademark vs. design — what's different

A 3D trademark is "a sign consisting of a three-dimensional shape" — the shape of the product or its packaging functions as a trademark. Both 3D trademarks and design registrations protect appearance, but the underlying logic differs: design protects "creative aesthetic appearance" for a limited term (20 years); a 3D trademark protects "a shape's source-identifying function" indefinitely (10 years + unlimited renewals).

Korean eligibility — the distinctiveness wall

Article 33 bars marks that lack distinctiveness. For 3D shapes specifically, KIPO and the trademark examination guidelines state that "if a 3D shape is recognized as the same kind of product (including its packaging or container) in trade for the designated goods, the shape is the general form of that product and lacks distinctiveness."

Translation: a beverage bottle that looks like a beverage bottle is not distinctive. "General form = no distinctiveness" is the wall most 3D trademark applications hit, and the largest single rejection ground. The test is whether the shape is commonly used for the same or similar goods in the relevant market.

Acquired distinctiveness — Coca-Cola contour bottle

Even shapes that lack inherent distinctiveness can register through Article 33(2)'s acquired distinctiveness doctrine. The textbook example is the Coca-Cola contour bottle. A July 2003 Japanese 3D-trademark filing succeeded after consumer surveys showed 60-81% of respondents recognized the bottle as Coca-Cola without any name attached. Korea and many other jurisdictions allowed registration on the same logic.

Acquired-distinctiveness evidence typically combines duration of use, frequency, continuity, production/sales volume, market share, advertising channels and duration, product quality, reputation, and presence of concurrent uses. Five-plus years of consistent shape use, advertising that elevates the shape itself (not just the brand name), and surveys that hit ~50% recognition are common thresholds. The standard isn't "we've used it a long time" — it's "the shape itself signals the source."

What gets registered as 3D trademarks in Korea

The Korean register's 3D-trademark roster is dominated by global brands' iconic shapes — contour bottles, lighters, distinctive caps, signature confectionery wrappers. The shared trait: decades of consistent use of the same shape, with advertising that conditions consumers to recognize source from shape alone. Outcomes vary by jurisdiction — Coca-Cola's new bottle was rejected by the EU General Court for lacking distinctiveness while passing in Korea and the US. One country's grant doesn't carry over to others.

Pre-filing checklist — five items

1. Visual features beyond the general form — specific curves, protrusions, divisions; not a plain cylinder or rectangle
2. Decorative elements separable from function — if function dictates the shape, brace for rejection
3. 5+ years of use plus retained advertising spend and revenue evidence
4. Consumer recognition surveys — 50%+ recognition from shape alone is the most powerful evidence
5. Plan past design expiry — design 20-year term + 3D trademark indefinite term gives layered, contiguous coverage

Frequently asked questions

Can I hold both a design registration and a 3D trademark?

Yes. They cover different rights with different terms and don't conflict. The strongest layered protection is design + 3D trademark in parallel. Common pattern: file design registration soon after launch (partial-exam track in 4-6 months) for short-term protection, then file the 3D trademark after 5-10 years of use to roll into indefinite protection.

What do the drawings look like?

Use a six-view drawing plus a perspective view, or photographs from multiple angles. Drawing standards are similar to design registration. Because what's recognizable can shift by viewpoint, every angle should display consistent distinctiveness; ambiguous angles invite rejection.

Does Korean registration carry over abroad?

No. Like ordinary trademarks, 3D trademarks need separate filings per country. Madrid Protocol allows multinational extension. As noted, EU is the strictest jurisdiction for 3D marks while the US is the most generous. For global rollouts, prepare strongest evidence before EU filings and consider sequencing them later.