G.R. No. L-28612. August 30, 1973.
AUGUSTO A. SANTOS, et al., petitioners, vs. HON. FERNANDO A. CRUZ, Judge of the Court of First Instance of Rizal, and the REPUBLIC OF THE PHILIPPINES, respondents.

FACTS

The petitioners are the heirs of spouses Juliana Andres and Roman Santos, who obtained original registration and an Original Certificate of Title for two parcels of land in Navotas, Rizal, in 1935. Upon the spouses’ death, the heirs executed an extrajudicial partition, leading to the issuance of Transfer Certificate of Title No. 165554 in their names in 1966. In 1967, the Republic of the Philippines, through the Solicitor General, filed a “Petition for the Amendment and/or Cancellation of Title and to Declare a Portion Thereof Null and Void and Petition for Reversion” in the original land registration case. The Republic alleged that Lot 6, one of the parcels, was actually a foreshore land forming part of the Manila Bay, constituting public domain not susceptible to private ownership, and sought its reversion to the state.
The petitioners moved to dismiss the Republic’s petition, contending that the action for reversion, which involved a controversial issue regarding the nature and ownership of the land, should have been filed as an ordinary civil action and not as an incident in the original land registration case. The respondent judge denied the motion to dismiss and a subsequent motion for reconsideration. The petitioners then filed this certiorari proceeding, seeking to annul the respondent judge’s orders and to restrain him from proceeding with the Republic’s petition.

ISSUE

Whether the Court of First Instance, acting as a land registration court under the provisions of Act No. 496 (the Land Registration Act), has jurisdiction to hear and determine the Republic’s petition for cancellation/amendment of title and reversion, which disputes the registrability and ownership of the land by alleging it is foreshore land and part of the public domain.

RULING

The Supreme Court granted the petition, set aside the orders of the lower court, and made the preliminary injunction permanent. The Court held that the land registration court lacked jurisdiction over the Republic’s petition. The legal logic is anchored on the limited jurisdiction of a land registration court under Section 112 of Act No. 496 . Proceedings under this section are summary in nature and are permitted only for the correction of non-controversial errors, such as clerical mistakes, or for recording changes that do not impair substantial rights, like those arising from death, marriage, or termination of interests. The provision explicitly states it cannot be used to reopen the original decree of registration.
The core issue raised by the Republic—whether Lot 6 is private property or inalienable foreshore land—is inherently controversial and substantial. It requires a full-blown adjudication on the merits, involving the presentation of evidence to determine the true character of the land, which is beyond the summary proceedings of a land registration court. Such a contentious dispute, which attacks the very validity of the title issued, must be resolved in an ordinary civil action for reversion filed by the State. Consequently, the respondent judge acted without jurisdiction or with grave abuse of discretion in taking cognizance of the petition and denying the motion to dismiss. The proper remedy for the Republic is to institute a separate plenary action in the ordinary courts.