Complete-Preemption Doctrine Law and Legal Definition

Complete-Preemption Doctrine refers to a rule that a federal statute's preemptive force may be so extraordinary and all-encompassing that it converts an ordinary state-common-law complaint into one stating a federal claim for purposes of the well-pleaded-complaint rule. It is invoked when Congress has so completely legislated an area of the law that any civil complaint arising from that area of the law is necessarily federal in character and may be removed to federal court. The federal law, in effect, displaces the state-law claims and the complaint is recharacterized as arising under federal law.