Trade marks in South Korea: an overview for foreign businesses

South Korea is one of the most important markets in Asia for foreign brands, and it is also one where a small amount of early trade mark planning pays off out of proportion to the effort. The system is administered by the Korean Intellectual Property Office (KIPO), it works on a first-to-file basis, and it has a feature that catches many overseas businesses out: a mark written in Latin characters does not automatically protect the way Korean consumers actually read, write and pronounce your brand. This overview explains what a Korean trade mark protects, how registration works in broad terms, and the strategic points worth raising with local counsel before you file. It is part of IPEnvoy's South Korea section, which sits alongside our China, Japan, US, EU, India and Türkiye coverage.

Treat this as orientation rather than a filing manual. Korean trade mark practice has detail and exceptions that matter in individual cases, and the periods and procedural steps below should always be confirmed against KIPO's current guidance or with a qualified Korean attorney.

What a trade mark protects in South Korea

A trade mark in South Korea is a sign used to distinguish the goods or services of one undertaking from those of another. Registrable marks include words, letters, figures, symbols, three-dimensional shapes and combinations of these, and Korea also recognises certain non-traditional marks such as colours, sounds, motion, holograms and position marks. Registration is granted for specified goods and services, classified under the international Nice system, so the scope of your protection is defined by both the mark itself and the classes and terms you claim.

Registration gives the proprietor the exclusive right to use the mark for the registered goods or services, and the ability to stop others using an identical or confusingly similar mark on the same or similar goods or services. As in most jurisdictions, protection is territorial: a Korean registration has effect in South Korea only, and rights elsewhere have to be secured separately, whether nationally or through an international route. The breadth of what you claim therefore matters, and over-claiming carries its own risks, so the specification deserves real thought rather than a straight copy of your home-country filing.

KIPO and the first-to-file rule

The Korean Intellectual Property Office is the government body responsible for examining and granting trade marks, patents and designs. Trade mark applications are filed with KIPO, examined by its examiners, and, once registered, maintained on the KIPO register.

South Korea is a first-to-file jurisdiction. In broad terms this means that, as between competing applicants, the party who files first generally secures the right, and prior use of an unregistered mark does not by itself defeat a later application or registration. There are protections that soften this: well-known and famous marks enjoy a degree of protection even without a Korean registration, and the law contains grounds aimed at refusing or cancelling applications made in bad faith, for example where an applicant is plainly trying to pre-empt a known foreign brand. These protections are real but narrower and harder to rely on than holding your own registration, and how they apply turns on the facts, so confirm the position with counsel. The practical lesson is the one that applies across most first-to-file systems: file early, ideally before you announce, launch or distribute in South Korea, because a delay can let a third party, including a bad-faith applicant, reach the office first. We expand on this in our guide to how to register a trade mark in South Korea.

Why you should register a Hangul version

This is the point most worth flagging for foreign businesses, and it is genuinely specific to markets like Korea. Your brand may be written in the Latin alphabet, but Korean consumers will often read, write, search for and pronounce it in Hangul, the Korean script. A registration covering only the Latin-script form may not protect the Hangul rendering that the public actually associates with you, which leaves a gap a competitor or squatter can exploit.

For that reason, foreign brands are commonly advised to register a Hangul version of the mark in addition to the original. Choosing that version is not mechanical. A transliteration into Hangul captures the sound, but there may be more than one plausible rendering, and the one consumers settle on can differ from the one you would pick. The Hangul form you adopt in marketing and the form you register should line up, because a mismatch can leave the version people actually use unprotected. These choices are best made with local advice early. Our note on Korean-character marks goes into the script choices and the strategic trade-offs in more detail.

Registration, examination and opposition in outline

The broad shape of the process is filing, examination, publication, a post-publication opposition window, and then registration. Korean examination covers both absolute grounds (such as distinctiveness) and relative grounds (such as conflict with earlier marks), so KIPO examines on relative grounds and may cite earlier conflicting marks rather than leaving that entirely to third parties. That makes a clearance search before filing valuable, though you should confirm current KIPO examination practice with local counsel, since procedural practice can change.

If an examiner raises objections, the applicant can respond, amend or argue before a final decision. Where the application is allowed, it is published, and third parties then have a limited window to oppose before registration is finalised. Treat the exact length of that window as confirm-with-counsel rather than fixed, since procedural timeframes change and turn on the facts; check the current period with KIPO or local counsel. Alongside opposition there are invalidation and cancellation routes, including non-use cancellation, which are the mechanisms more often used to challenge a registration that is already on the register. Our overview of opposition at KIPO covers these mechanisms and their timing.

If you are filing across several countries, the international route under the Madrid system can let you designate South Korea from a single application based on a home filing. That can be efficient, but it does not remove the Korea-specific issues above, including the Hangul question and Korea's examination on relative grounds. Our Madrid Protocol pillar explains how the international route interacts with national systems like Korea's.

Term and renewal

A Korean trade mark registration runs for a fixed term from registration and can be renewed indefinitely in further terms, subject to paying the applicable renewal fee. Treat the exact term, the renewal window and any procedural conditions as details to confirm with KIPO or local counsel, since these can change and the consequences of missing a deadline are serious. Korea also has a non-use cancellation mechanism, so a registration that is not genuinely used for the registered goods or services for a continuous period can become vulnerable to cancellation by a third party; treat the precise non-use period and how it is computed as confirm-with-counsel rather than fixed. Renewal is therefore not purely administrative: a registration is most secure when the mark is actually in use in South Korea for what it covers, and where use has narrowed it is worth reviewing the specification.

Costs in Korea are driven by the number of classes you file in, whether you need both a Latin-script and a Hangul mark, the complexity of examination (including any office actions), and local attorney involvement. We do not quote figures here because official fees change; official fees apply, confirm the current amount with KIPO or local counsel, and ask local counsel for an estimate of professional charges for your particular filing.

A note on scope

This page is general information about trade mark practice in South Korea, not legal advice, and IPEnvoy is not a law firm. Korean trade mark law has detail and exceptions that matter to individual cases, and points such as the choice of Hangul form, the right classes, clearance and the handling of deadlines benefit from advice tailored to your facts. For a filing or a dispute, we can route you to a vetted IP firm in South Korea. Always confirm the current position with KIPO's official website and a qualified Korean IP professional before you act.