GR L 75377; (February, 1988) (Digest)
G.R. No. L-75377 February 17, 1988
CHUA KENG GIAP, petitioner, vs. HON. INTERMEDIATE APPELLATE COURT and CHUA LIAN KING, respondents.
FACTS
Petitioner Chua Keng Giap filed a petition for the settlement of the estate of the late Sy Kao. Private respondent Chua Lian King moved to dismiss, arguing petitioner lacked capacity to sue as he had previously been declared not the son of spouses Chua Bing Guan and Sy Kao in a separate, final, and executory estate settlement proceeding (S.P. No. Q-12592). The Regional Trial Court denied the motion, reasoning the prior case only decided paternity (relation to Chua Bing Guan) and not maternity (relation to Sy Kao). The Intermediate Appellate Court reversed via certiorari, holding this distinction was mere quibbling and that the prior judgment barred the new petition. The petitioner’s motion for reconsideration was denied for tardiness.
ISSUE
Whether the petitioner’s claim of being an heir of Sy Kao is barred by res judicata, rendering the trial court’s denial of the motion to dismiss a grave abuse of discretion correctable by certiorari.
RULING
The Supreme Court denied the petition, upholding the Appellate Court. The core legal logic is the conclusive application of res judicata. The Court found the issue of petitioner’s filiation to Sy Kao had been directly and finally settled in Sy Kao v. Court of Appeals ( G.R. No. 54992 ), where Sy Kao herself unequivocally denied being his mother, and the dismissal of his petition in that case had long become final. The trial court’s artificial distinction between paternity and maternity was invalid, as the prior proceeding definitively adjudicated that the petitioner was not a child of the marital union of Sy Kao and Chua Bing Guan. Consequently, allowing a new trial would violate res judicata, subject the parties to unnecessary litigation, and waste judicial resources to re-prove an already-decided fact. The Court deemed discussion on the procedural propriety of certiorari or the timeliness of the motion for reconsideration unnecessary, as the substantive outcome—rejection of the filiation claim—was legally inevitable. The ruling emphasizes that final judgments on identity and filiation are binding and cannot be relitigated under new guises.