The Doctrine of Estoppel

Written by Adam Peck Category: Injury Law January 15th, 2013 2 min read

Estoppel in its broadest sense is a legal term referring to a series of legal and equitable doctrines that preclude “a person from denying or asserting anything to the contrary of that which has, in contemplation of law, been established as the truth, either by the acts of judicial or legislative officers, or by his own deed, acts, or representations, either express or implied indicates California Business Law Attorney Steven C. Peck.

This term appears to come from the French estoupail (or a variation), which meant “stopper plug”, referring to placing a halt on the imbalance of the situation. The term is related to the verb “estop” which comes from the Old French term estopper, meaning “stop up, impede”.

Where a court finds that a party has done something warranting a form of estoppel, that party is said to be “estopped” from making certain related arguments or claiming certain related rights. The defendant is said to be “estopped” from presenting the related defense, or the plaintiff is said to be “estopped” from making the related argument against the defendant.

Because estoppel is so factually dependant, it is perhaps best understood by considering specific examples. Estoppel is closely related to the doctrines of waiver, variation, and election and is applied in many areas of law, including insurance, banking, employment, international trade, etc. In English law, the concept of legitimate expectation in the realm of administrative law and judicial review is estoppel’s counterpart in public law, although subtle but important differences exist. The main species of estoppel shall be discussed in our next blog.

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Written by Adam Peck

Expertise: Personal Injury

Adam J. Peck, ESQ is a principal with Peck Law Group, APC. In 2008, Mr. Adam Peck received his Juris Doctorate from Whittier Law School where he graduated Cum Laude. His practice is primarily dedicated to representing Elders, Dependent Adults, along with their loved ones and family members, who have suffered horrific personal injuries.