International Litigation Lawyer | How cross-border civil cases actually proceed in Korea

International Litigation | Which country's court can hear the case

Before anything else, a Korean court must confirm it has international jurisdiction over the dispute. This is not automatic just because one party is Korean.

The general standard: substantial connection

Korean courts have international jurisdiction where the case or the parties have a substantial connection to Korea, and jurisdiction is determined by reasonably applying domestic jurisdiction rules while accounting for the international nature of the case (국제사법 제2조 제1항). Factors such as the defendant's habitual residence, the place where the contract was performed, or where the tort occurred are all weighed together, so there is rarely a single decisive factor.

Jurisdiction agreements in contracts

Many cross-border contracts include a clause designating the courts of a specific country. Korean courts generally respect these agreements, but an exclusive jurisdiction clause can be found invalid if it results in a jurisdiction with no reasonable connection to the dispute or produces a grossly unfair result for one side. Reviewing the actual wording of the clause, not just its label, is often the first step in these cases.

Parallel proceedings in two countries

It is not unusual for related lawsuits to be filed in two different countries around the same time. Korean law allows a Korean court to consider staying its own proceedings if the same case is already pending abroad and recognition of that foreign judgment is expected (국제사법 제11조), which makes early strategic choices about where to file the initial suit important.

International Litigation | Serving documents on a party outside Korea

A lawsuit cannot proceed unless the other side is properly notified, and notifying someone abroad follows different rules than serving someone in Korea.

Methods available under treaty and domestic law

Where the destination country is a party to the Hague Service Convention, service is generally routed through that country's designated Central Authority. Where no such treaty framework applies, service typically proceeds through diplomatic or consular channels under the Civil Procedure Act's provisions on service abroad (민사소송법 제191조). Which method applies depends entirely on the recipient's country, so this needs to be confirmed at the very start of a case.

Delays are the norm, not the exception

Service through a foreign Central Authority or consulate commonly takes several months, and can take over a year in some jurisdictions or if the initial documents are rejected for translation or formatting issues. Preparing complete and properly translated documents on the first attempt is one of the few things that meaningfully shortens this timeline.

International Litigation | Which country's law applies, and how to prove foreign law

Even once a Korean court has jurisdiction, it may still need to apply a foreign country's law to decide the substance of the dispute.

Choice of law rules

The Private International Act sets out which country's law governs different types of disputes — for example, contract disputes are generally governed by the law the parties chose, or absent such a choice, the law of the country most closely connected to the contract (국제사법 제45조, 제46조). Tort claims and other categories each have their own connecting rules, so the applicable law can differ issue by issue within a single case.

Proving what foreign law says

A Korean court does not automatically know the content of, say, California contract law or Vietnamese labor law — it must be proven as a fact, typically through expert opinions, legal texts, or certified translations of the relevant foreign statutes. Collecting this evidence early, often with the help of local counsel in the other country, is one of the more resource-intensive parts of an international case.

Gathering evidence located abroad

Documents, witnesses, or records located overseas cannot simply be subpoenaed the way they could within Korea. Requests are typically made through letters of request to the foreign court or, where available, cooperation between the parties' respective counsel, and this evidence-gathering timeline should be built into the overall case plan from the outset.

International Litigation | Enforcing a judgment across the border

Winning the case is not the end of the story if the losing party or their assets are in a different country from where judgment was entered.

Enforcing a foreign judgment in Korea

A final foreign judgment can be enforced in Korea only after a Korean court issues an execution judgment recognizing it, which requires confirming that the foreign court had proper jurisdiction, the defendant was properly served or appeared, the judgment does not violate Korean public policy, and reciprocity exists with that country (민사소송법 제217조, 민사집행법 제26조·제27조). Korean courts generally do not re-examine the merits of the foreign decision itself.

Enforcing a Korean judgment abroad

Whether a Korean judgment can be enforced in another country depends entirely on that country's own law and any applicable treaty, since Korea is not a party to many of the international judgment-enforcement conventions other countries have joined. This is worth checking before filing suit in Korea if the defendant's only meaningful assets are located overseas.

International Litigation | From initial consultation to enforcement

International Litigation | How fees are typically calculated in cross-border cases

※ Costs vary depending on case complexity and specific circumstances; exact fees will be provided during consultation. No specific outcome is guaranteed.

International Litigation | Self-Check Before You Start

Frequently Asked Questions

Official References

• Korea Law Information Center — https://www.law.go.kr
• Easy-to-Find Everyday Legal Information — https://easylaw.go.kr
• Korea Legal Aid Corporation — https://www.klac.or.kr