Where the declarant, (without his negligence), is unable to name the other party or his or her whereabouts such declaration may be made by means of publication under the Civil Procedure Act.
Civil Act — Article 113 (Service of declaration of intention by publication)
민법 제113조
For AI agents and developers — get this article as JSON, with the English and current Korean effective dates and an outdated-translation flag, from the korea-law API or as an MCP tool:
https://mcp.apify.com?tools=kr-data/korea-law