Table of Contents

📌 목차 (Table of Contents)

Korea’s First-to-File System Turns Registration Speed Into Legal Risk

Registration, Not Use, Creates the Right
Korea’s trademark system is a first-to-file jurisdiction: whoever files the application first generally obtains the registration and the exclusive right to use the mark in Korea, regardless of who used it first anywhere else in the world. Years of global sales, international registrations, and brand recognition abroad carry no automatic weight in Korea if a third party files domestically first.

What Losing the Race Actually Costs
A brand that loses the filing race typically loses the practical ability to use its own name on products, packaging, storefronts, and marketing in the Korean market without risking an infringement claim from the party that got there first. It cannot bring an infringement action against copycats, because the copycat may hold the valid registration. In many documented cases, the eventual outcome is a forced negotiation to buy back the mark.

Why Foreign Brands Keep Losing Their Own Names in Korea

A Recognized, Recurring Pattern
Trademark squatting targeting foreign brands entering Korea has been significant enough to draw attention in international trade reporting. A party with no genuine business under the mark files a Korean application for a foreign brand name, its Korean-script transliteration, or both, anticipating that the brand will eventually need to deal with the registration one way or another.

The Transliteration Blind Spot
Brand owners frequently register the original mark but overlook its Korean-script (Hangul) transliteration, treating it as a translation rather than a separate mark needing its own filing. Squatters routinely register exactly that transliteration, sometimes years before the brand owner ever files anything in Korea.

Opposition: The Narrow Window Just Got Narrower

How the Window Opens
Once a Korean trademark examiner approves an application, the mark is published in the official gazette before final registration, opening a period during which any third party — with no need to show a personal legal interest — can file an opposition.

The Window Just Got Cut in Half
For applications published from July 22, 2025 onward, the opposition period was shortened from two months to thirty days. A brand owner relying on outdated advice assuming a two-month window, or one not actively monitoring gazette publications, can lose the opportunity entirely without ever knowing a conflicting application existed. Once filed, the opponent gets a further period to supplement grounds and evidence, and a three-member examiner panel decides the matter after the applicant responds.

What Opposition Can and Can’t Do
Opposition is the cheapest and fastest tool, but it only works before registration completes, and there is no separate appeal against the opposition decision itself — a losing opponent must pursue a later invalidation trial instead.

Invalidation: The Harder Path That Reaches Marks Already Registered

When the Mark Has Already Registered
If a squatter’s registration slips past the opposition window, an invalidation trial before Korea’s trial and appeal authority is the tool that reaches a mark after registration. Successful cases have generally relied on proving the mark was genuinely well known — through years of operation, sales figures, and media coverage — combined with evidence the applicant knew of the legitimate brand and filed intending to profit from confusion or extract a payout.

Fame Doesn’t Have to Mean Universal Recognition
Successful invalidation cases have shown that “well known” doesn’t require recognition among the general Korean public at large — recognition among a relevant, specific consumer segment has been sufficient in practice.

The Five-Year Clock — and the Carve-Out for Bad Faith
Most invalidation grounds are subject to a five-year statute of limitations running from the registration date. Invalidation based on bad-faith filing, however, is generally treated as an exception not bound by that five-year clock — reflecting the view that a registration obtained through deliberate bad faith shouldn’t become immune simply because enough time passed.

The Non-Use Shortcut Squatters Don’t See Coming

A Different Kind of Vulnerability
Many squatters register a mark with no intention of ever using it in Korea — the registration itself is the asset. Korean trademark law allows any interested party to file a non-use cancellation trial against a mark unused in Korea for three consecutive years, and the burden then shifts to the registrant to prove genuine use.

Why This Route Is Often Easier Than It Looks
Non-use cancellation sidesteps the harder evidentiary fight over intent that a bad-faith invalidation claim requires — often an easier, cleaner path when the squatted mark is clearly sitting idle.

Unfair Competition Law: A Second Track Independent of Trademark Registration

Protection That Doesn’t Require Owning a Korean Registration
Korea’s Unfair Competition Prevention and Trade Secret Protection Act prohibits creating confusion by using a mark widely known in Korea as identifying another person’s goods or business — available regardless of whether that brand holds, or has even applied for, a Korean trademark registration. The Act also addresses bad-faith domain name registration aimed at selling the domain back, blocking the legitimate owner’s registration, or extracting commercial benefit.

Remedies Run Through the Courts, Not the Trademark Office
Available remedies include court injunctions, destruction of infringing goods, removal of infringing facilities, cancellation of a squatted domain name, and monetary damages — centered on proving the brand’s actual reputation among Korean consumers or a relevant segment.

Practical Sequencing for Protecting a Global Brand in Korea

  1. File in Korea before launch, not after, since prior use anywhere else in the world carries no weight against a domestic filer who got there first.
  2. File the Korean-script transliteration as its own separate mark, since that is precisely the version squatters register most often.
  3. Set up active monitoring of Korean trademark gazette publications, since the opposition window is now thirty days rather than two months.
  4. If a squatted mark is found after registration, confirm which invalidation ground applies and whether the five-year statute of limitations has run, since bad-faith filing is an exception to that time bar.
  5. Check whether the squatted mark is actually being used in Korea, since three years of non-use opens a cancellation path that’s often easier than proving bad faith.
  6. Evaluate the unfair competition track in parallel, since that claim doesn’t depend on owning a Korean registration at all.