GR L 3223; (October, 1950) (CRITIQUE)
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THE AI-ASSISTED CRITIQUE
The decision in Henderson v. Tan correctly identifies the core jurisdictional error: a trial court’s authority to amend a final judgment is strictly limited to clerical errors, not substantive legal determinations. The inclusion of the moratorium clause was a deliberate judicial act addressing the applicability of Executive Order No. 32 and Republic Act No. 342 , making its subsequent excision a substantive alteration. The court’s reliance on Freeman on Judgments solidly supports the principle that a final judgment cannot be materially changed post-finality under the guise of correction, as doing so undermines the doctrine of immutability of final judgments. This is not a mere procedural misstep but an act in excess of jurisdiction, as the judgment had long become final and executory, stripping the lower court of any authority to modify its substantive terms.

The respondent’s argument that the moratorium clause was extraneous because the defense was not formally pleaded is unpersuasive and contravenes established procedural norms. A default judgment does not license the court to inject issues, but once rendered, it carries the same force of finality as a contested judgment. The proper remedy for any perceived legal error, such as the improper application of the moratorium, was a timely appeal, not a collateral motion. The court’s analysis rightly rejects the attempt to recharacterize a judicial error as a clerical one, adhering to the maxim functus officio, which holds that a court loses power over a case once judgment becomes final. Allowing such post-finality modifications would create intolerable uncertainty and invite endless litigation, violating core tenets of judicial economy and finality.

Ultimately, the Supreme Court’s grant of certiorari was appropriate, as the lower court’s order constituted a grave abuse of discretion amounting to lack of jurisdiction. The proceedings following the void order, including the foreclosure sale, are necessarily null, as they sprang from an act without legal authority. This ruling reinforces the protective boundary around final judgments, ensuring that litigants can rely on their conclusiveness. The decision serves as a critical safeguard against judicial overreach, emphasizing that substantive legal errors must be challenged through direct appeals, not through unauthorized alterations after a judgment has attained finality.