An offer made without specifying a period for acceptance may not be withdrawn until the passage of a reasonable period of time for the offeror to receive a notice of acceptance; provided, however, that this does not apply if the offeror reserves the right to withdraw.
承諾の期間を定めないでした申込みは、申込者が承諾の通知を受けるのに相当な期間を経過するまでは、撤回することができない。ただし、申込者が撤回をする権利を留保したときは、この限りでない。
Notwithstanding the provisions of the preceding paragraph, an offer referred to in that paragraph which has been made to a person with whom the offeror is having a dialogue may be withdrawn at any time while the dialogue continues.
If an offeror does not receive from a person with whom the offeror is having a dialogue a notice of acceptance of the offer referred to in paragraph (1) while the dialogue continues, the offer ceases to be effective; provided, however, that this does not apply if the offeror manifests the intention to maintain the effect of the offer after the end of the dialogue.