Can a Korean Clinic Actually Sue You Over a Bad Review? Courts Have Already Answered That More Than Once.

2 primary sources checked2 reported, unconfirmedReviewed 12 Aug 2026

A legal threat over a negative review is one of the more specific fears foreign patients bring up about posting honestly online after a bad experience in Korea — and it’s not an irrational one. Korean defamation law has a feature most English-speaking readers don’t expect: unlike in the U.S., truth alone is not automatically a defense. A true statement can still, in principle, meet the legal definition of defamation. That’s real, and it’s worth taking seriously. What’s less well known is how these cases have actually gone when a clinic has followed through.

The law that makes this possible

Korea’s Criminal Act allows defamation charges over both false and true statements, and the Act on Promotion of Information and Communications Network Utilization and Information Protection (정보통신망법) sets a separate, heavier penalty specifically for defamation carried out online — which covers reviews on forums, apps, and cafes. On paper, that’s a wide net, and it’s the basis clinics point to when they send a cease-and-desist letter over a review.

But Korean law also builds in a specific exit ramp. Article 310 of the Criminal Act says that when a statement is both true and made solely in the public interest, its unlawfulness is negated — meaning it stops being a punishable act. A consumer review of a medical procedure, written from direct experience and useful to other prospective patients, is close to the textbook example of what that exception exists for.

What’s happened when clinics actually pursued it

In one case, a patient posted about complications from nose surgery on an online plastic-surgery forum, without naming the clinic but including enough identifying detail that it recognized itself. The clinic filed a criminal defamation complaint. The prosecutor issued a non-prosecution decision, declining to charge the patient — accepting the defense argument that the post reflected direct personal experience, served as genuinely useful reference information for other patients researching surgery, and wasn’t primarily written to defame.

In a separate case, a clinic sued in civil court to force the removal of a patient’s negative reviews describing complications from eyelid surgery. The Seoul Central District Court rejected the clinic’s request on April 1, 2022, finding that a factual account of real complications — backed by the patient’s own medical records showing overcorrection — wasn’t defamatory, since it wasn’t written with the primary intent to insult and reflected a genuine consumer experience.

Both outcomes turned on the same two questions: was the account substantially true, and was posting it about something other than just tearing the clinic down. Reviews that cleared those two bars held up. It’s also worth separating this from a different, unrelated legal exposure that sometimes gets confused with it: the criminal conviction of Gangnam Unni’s CEO in 2023 was for patient brokering under a different provision of the Medical Act, not for anything related to reviews — a completely separate legal question with a completely different outcome.

What this means if you’re deciding whether to post

Getting a legal threat letter is a real possibility, and it’s an unpleasant one regardless of how the law eventually sorts out — lawyers who’ve handled these cases are candid that the dispute itself creates stress independent of the legal outcome. But the pattern in the cases that have actually been tested is consistent: a review based on your own experience, focused on what happened rather than on personal insults, and useful to someone else making the same decision, is the kind of speech Korean law has repeatedly protected — even when a clinic pushed hard to have it removed or prosecuted.

What actually held up, specifically

Pulled directly from what made the difference in these cases, not general advice:

• Stick to what happened to you. Both protected reviews described a real complication the reviewer experienced firsthand, not a claim about the clinic’s intentions, competence in general, or anything secondhand.
• Keep the record that backs it up. The eyelid-surgery case turned partly on medical records documenting the overcorrection. Photos, receipts, and any post-op documentation are what let “this happened to me” hold up as true rather than just asserted.
• Naming the clinic isn’t automatically what sinks you. In the nose-surgery case, the post didn’t use the clinic’s name but still included enough detail that the clinic identified itself — and the reviewer still wasn’t charged. What mattered was truth and purpose, not anonymity.
• Write toward other patients, not just at the clinic. Both cases turned on the review reading as useful reference information for someone else researching the same procedure — not as a message aimed purely at hurting the clinic. Framing that includes what you’d tell someone considering the same treatment does real legal work here, not just readability work.
• A legal threat is not the same as a case that goes anywhere. In the nose-surgery example, a filed criminal complaint still ended in non-prosecution. A cease-and-desist letter is a pressure tactic, not a verdict — getting one doesn’t mean the law is actually on the clinic’s side.

Case details are drawn from Korean legal-news reporting on the April 2022 Seoul Central District Court ruling and a separate prosecutorial non-prosecution decision in a plastic-surgery review defamation complaint, cross-checked against the relevant provisions of Korea’s Criminal Act and the Act on Promotion of Information and Communications Network Utilization and Information Protection. The distinction from the 2023 Gangnam Unni patient-brokering conviction is based on that case’s official court record.