The opposition period
An opposition must be filed within 30 days of the publication date. The period was shortened from two months by an amendment in force since 22 July 2025; applications already published before that date keep the two-month period.
Grounds
Any ground on which KIPO must refuse registration can be raised: for example a likelihood of confusion with an earlier mark or a lack of distinctiveness.
Reasons and evidence: 30 more days
The opposition must be filed within the period, but its reasons and evidence can be supplemented within 30 days after the opposition period ends. Filing a short opposition on time and completing it afterwards is common practice. If no reasons or evidence are given at all, the opposition can be dismissed.
How KIPO decides
A panel of three examiners examines the opposition. The applicant receives a copy and is given a period to answer. The panel decides in writing, with reasons, after the opposition period has ended.
For applicants
If your Korean application is opposed, we report the opposition in English with the opponent's reasons and the deadline for your answer. Our trademark fees are on our Korean trademark page.
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Questions
How long is the trademark opposition period in Korea?
30 days from the publication date, for applications published since 22 July 2025. Applications published earlier keep the former two-month period.
Can reasons and evidence be added after the opposition period?
Yes, within 30 days after the opposition period ends.
Who decides a Korean trademark opposition?
A panel of three KIPO examiners, after giving the applicant the opportunity to answer.
What grounds can be raised?
Any ground for refusing registration under the Korean Trademark Act, such as a conflicting earlier mark or lack of distinctiveness.
Legal basis
- Trademark Act, Art. 60 — opposition within 30 days of publication
- Trademark Act, Art. 61 — supplementing reasons and evidence
- Trademark Act, Art. 62, Trademark Act, Art. 66 — panel of examiners and decision
- Act No. 20697 (21 January 2025), Addendum Arts. 1 and 4 — in force six months after promulgation; earlier publications keep the former period