prosecutor, accuser
The person who files the lawsuit is the plaintiff.
Lead Plaintiff - A person named in the complaint as the plaintiff and who has been determined by the court to be a legally "adequate" person to represent the interests of the class.Besides the "lawyer" who manages a lawsuit, the Lead Plaintiff is the main person.
The word claimant is defined as a person who makes a claim. This could be in reference to a lawsuit in most cases. Some synonyms include plaintiff, suitor or petitioner.
The burden of proof is upon the party asserting the claim. That person or entity is usually called the Plaintiff, but in some jurisdictions may be called the Claimant. If the person or entity being sued (usually called the Defendant) asserts a claim back (a counterclaim) against the Plaintiff, he/she/it has the burden of proof with respect to the allegations of the counterclaim.
A respondent.
The person initiating a law suit is called an Appellant.
pretender
The person that files a civil suit is known as the Petitioner or the Plaintiff or the Claimant.
When plaintiff goes in appeal then he is called plainticf appellant.
The plaintiff in a lawsuit is called "el demandante".
An abstract of judgment is a statement written as a summary of a judgment. It generally outlines any money owed by the plaintiff to the defendant or claimant in the case.