Court: Court of Appeal

Year: 1978

Principle(s): Revocation of an offer is ineffective once the offeree starts performance.

Court: Court of Common Pleas

Year: 1880

Principle(s): Revocation of an offer is only effective if communicated to the offeree

Court: Court

Year: 1828

Principle(s): A promise to keep an offer open is not binding without consideration from the offeree; an offer can be revoked at any time if the offeree gives no consideration in response to a promise to keep the offer open

Court: Court of Appeal

Year: 1875

Principle(s): A general offer can be revoked through the same medium it was made; if the offeree does not see the revocation notice after it was published through the same medium the offer was made, revocation is still valid

Court: Court of Appeal

Year: 1952

Principle(s): An offer cannot be revoked after performance has begun.