Pacionaria C. Baylon v. The Honorable Court of Appeals (Former Ninth Division)

Summary

This case involves a guaranty dispute where Leonila Tomacruz lent P150,000 to Rosita Luanzon with Pacionaria Baylon as guarantor. When Luanzon defaulted, Tomacruz sued both parties. The RTC and CA ruled against Baylon, finding a valid loan agreement based on the promissory note's clear terms. However, the Supreme Court reversed, holding that a guarantor cannot be held liable without first obtaining judgment against the principal debtor. Since summons was never served on Luanzon, the trial court lacked jurisdiction over her, making it premature to pursue the guarantor. The case establishes the fundamental principle that creditors must exhaust legal remedies against principal debtors before pursuing guarantors, emphasizing the subsidiary nature of guaranty obligations under Philippine civil law.