Spouses Matias B. Aznar Iii v. Hon. Juanito A. Bernad

Summary

This Supreme Court case resolved a pure question of law regarding procedural rules: whether an affirmative defense of prescription can be validly raised for the first time in an amended answer. The Court ruled in favor of the petitioners, holding that since an amended answer replaces the original answer entirely, the prescription defense was properly pleaded. The Court emphasized liberal construction of procedural rules to promote substantial justice, distinguished the case from Torreda vs. Boncaros (which involved a supplemental rather than amended pleading), and noted that defendants still had the right to amend under Rule 10 since no responsive pleading was filed. The decision reinforced that procedural rules should facilitate rather than frustrate the attainment of justice, establishing important precedent for amendment of pleadings in Philippine civil procedure.