New Jersey Statutes Title 54. Taxation 54 § 5-105

The Superior Court in an action may direct the county clerk or register of deeds, as the case may be, to cancel of record any tax sale certificate of record in the county if it shall be satisfied by proof that the holder of the tax sale certificate has been fully paid all moneys expended by him for the tax sale certificate, including all expenses incurred by him, and lawful interest therein according to law. The court may proceed in the action in a summary manner or otherwise.