Doctrine of Estoppels
In its simplest sense, doctrine of Estoppels, precludes a person from denying or to negate anything to the contrary of that which has been constituted as truth, either by his own actions, by his deeds or by his representations or by the acts of judicial or legislative officers.
In law, the doctrine of estoppel is a legal principle by which a claimant may be prevented from asserting a legal right or depending on a set of facts to support a claim if that claimant has said or done something that contradicts his current claim. This doctrine attempts to avoid injustice or harm to one party due to inconsistencies of another party. Although there are several forms of estoppel, a doctrine of estoppel generally involves a promise or representation by one party that influences the behavior of the second party, who relies on the veracity of the promise or representation. For example, if a dog breeder agrees to give a customer a free dog, he cannot make a claim for the price of the dog six months later. The doctrine of estoppel prevents him from asserting his otherwise legitimate right to payment for the dog due to the representation that he made to the customer that the dog would be free.