Restatement Second of Contracts § 69
Acceptance by Silence or Exercise of Dominion
- Where an offeree fails to reply to an offer, his silence and inaction operate as an acceptance in the following cases only:
- Where an offeree takes the benefit of offered services with reasonable opportunity to reject them and reason to know that they were offered with the expectation of compensation.
- Where the offeror has stated or given the offeree reason to understand that assent may be manifested by silence or inaction, and the offeree in remaining silent and inactive intends to accept the offer.
- Where because of previous dealings or otherwise, it is reasonable that the offeree should notify the offeror if he does not intend to accept.
- An offeree who does any act inconsistent with the offeror's ownership of offered property is bound in accordance with the offered terms unless they are manifestly unreasonable. But if the act is wrongful as against the offeror it is an acceptance only if ratified by him.
Copyright, The American Law Institute