G.R. No. L-76639; July 16, 1987
Emilio Sy, petitioner, vs. Hon. Juan C. Tuvera, in his capacity as Presidential Executive Assistant of the Office of the President; The Hon. Minister of Natural Resources; The Hon. Director of Lands; The District Land Officer of Dipolog City; and Josefa Vda. De Ramos, respondents.

FACTS

Petitioner Emilio Sy, a naturalized Filipino citizen, was the winning bidder for a parcel of public land in a 1960 auction conducted by the Bureau of Lands. A protracted dispute arose concerning the correct purchase price, which was ultimately settled by the Court of Appeals in 1974, affirming the award to Sy at his original bid. However, a separate controversy emerged regarding Sy’s citizenship. In 1965, the judge who originally granted his naturalization petition moved to declare it null. Sy subsequently filed a motion to validate his 1953 oath of allegiance, which lacked notice to the Solicitor General. The Solicitor General interposed no objection provided a new oath was taken, and the court issued a corrected Certificate of Naturalization in 1967.
Despite this validation, the Office of the President, through respondent Juan C. Tuvera, issued a resolution in 1981 canceling Sy’s award of the land, citing his alleged disqualification as an alien at the time of the 1960 auction. Sy challenged this resolution before the Supreme Court in G.R. No. 59451, but his petition was denied through minute resolutions in 1983. He then filed a civil case before the Court of First Instance, which was dismissed. The Intermediate Appellate Court affirmed the dismissal, prompting this petition for review.

ISSUE

The core issue is whether the doctrine of res judicata bars Sy from relitigating the validity of the 1981 Presidential resolution that canceled his land award.

RULING

Yes, the petition is barred by res judicata. The Supreme Court denied the petition, emphasizing the finality of its prior minute resolutions in G.R. No. 59451. The legal logic is firmly rooted in the principle that a final judgment or decree on the merits by a court of competent jurisdiction is conclusive on the rights of the parties and constitutes an absolute bar to subsequent actions involving the same claim, demand, or cause of action. Here, the validity of the Tuvera resolution—which Sy now assails—was directly and conclusively passed upon when the Supreme Court denied his earlier petition challenging that very resolution. The Court held that Sy cannot, after soliciting a ruling from the highest tribunal and receiving an adverse decision, repudiate that judgment and seek to nullify it in an inferior court. Such maneuvering constitutes an abuse of the judicial process, trifles with the administration of justice, and contravenes the immutable rule of res judicata, which aims to prevent endless litigation and ensure the stability of judicial decisions.