The Commission may effect service by publication in the following cases:
委員会は、次に掲げる場合には、公示送達をすることができる。
the address or residence of the person to be served or the place where service is to be effected is unknown;
送達を受けるべき者の住所、居所その他送達をすべき場所が知れない場合
in cases of service that would be effected in a foreign country (meaning a country or region located outside the territory of Japan; the same applies hereinafter), the Commission finds that it is impossible to follow the provisions of Article 108 of the Code of Civil Procedure as applied mutatis mutandis pursuant to the preceding Article following the deemed replacement of terms, or it is impossible to effect service even if the Commission follows those provisions;
外国（本邦の域外にある国又は地域をいう。以下同じ。）においてすべき送達について、前条において読み替えて準用する民事訴訟法第百八条の規定によることができず、又はこれによっても送達をすることができないと認めるべき場合
even after six months have elapsed since a commission was issued to the competent government agency of a foreign country pursuant to the provisions of Article 108 of the Code of Civil Procedure as applied mutatis mutandis pursuant to the preceding Article following the deemed replacement of terms, no document that certifies that the agency has effected service has been sent.
A posting to the effect that the documents to be served will be delivered at any time to the person to be served is made on the notice board of the Commission to effect service by publication.
公示送達は、送達をすべき書類を送達を受けるべき者にいつでも交付すべき旨を委員会の掲示場に掲示することにより行う。
Service by publication becomes effective once two weeks have elapsed since the date on which the posting under the preceding paragraph was commenced.
公示送達は、前項の規定による掲示を始めた日から二週間を経過することによって、その効力を生ずる。
Regarding service by publication in lieu of service to be made in a foreign country, the period referred to in the preceding paragraph is six weeks.