Cancellation of a registered document

With regard to immovables belonging to A. Person B fraudulently claiming rights over the said immovable properties executed registered documents. But later the rights of the said person B was rejected by a civil court of law. Person A was not a party to that proceedings. Now person A wants to clear the cloud over the title of his immovables created by fraudulent person B. What is the legal remedy. Should person A again file fresh suit to setaside those documents executed by the said fraudulent person B.