Estoppel is a legal principle that prevents a person or entity from asserting a legal right or taking a legal position that contradicts or is inconsistent with its earlier position, behavior, or agreement. The person or entity is said to be “estopped” from changing its position, behavior, or agreement because another person or entity has relied on its earlier position, behavior, or agreement (detrimental reliance).
In Oklahoma, estoppel is a legal doctrine that can be invoked in various contexts, such as contract disputes, property issues, and other civil matters. The principle of estoppel prevents a party from asserting a claim or a defense that is contrary to their previous statements, actions, or agreements if the other party has relied on those earlier behaviors to their detriment. This reliance must have been reasonable and have led to a change in position or some form of harm. Estoppel can take several forms, including promissory estoppel, equitable estoppel, and estoppel by deed, among others. Oklahoma courts will consider the specific facts of each case to determine whether estoppel is appropriate, ensuring that justice is served by preventing unfair advantage or harm due to inconsistent behavior.