If merchants are at a distance from each other and the party receiving an offer to contract not specifying a period for acceptance does not issue notice of its acceptance within a reasonable period of time, the offer ceases to be valid.
商人である隔地者の間において承諾の期間を定めないで契約の申込みを受けた者が相当の期間内に承諾の通知を発しなかったときは、その申込みは、その効力を失う。
The provisions of Article 524 of the Civil Code apply mutatis mutandis to a case as referred to in the preceding paragraph.
merchant
「商人」
A person who, in their own name, carries on commercial transactions (商行為) as a business.
Defined inArticle 4, paragraph (1)· applies throughout the law