Not exactly, you can have a judgment that is based on law; but judgment can also mean something that is utterly unrelated to law.
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criterion
Criterion
inference
A consent judgment is a legal agreement or court order that is approved by all parties involved in a lawsuit. It is typically reached when both parties agree to resolve the dispute without a trial, often outlining the terms of the settlement. Consent judgments are binding and enforceable by the court.
a theroy based on an judgement is called the effect
science definition
File a motion to vacate based on that fact. After the judgment is entered there is a SOL for filing that motion.
Reasoning
theory hypothosis
Under the Federal Rules of Civil Procedure, in the federal court system, you must make a motion to set aside a judgment based on fraud within a reasonable time after entry of the judgment but in no event later than one year after entry of the judgment. State court rules may be different so you will have to review them if the judgment is a state court judgment.