Heirs of Ernesto Biona v. The Court of Appeals

Summary

This case involves a property ownership dispute where the heirs of Ernesto Biona challenged the validity of a handwritten deed of sale executed by his widow Soledad Biona in favor of Leopoldo Hilajos in 1961. The Supreme Court upheld the validity of the unnotarized deed, ruling that under Civil Code Article 1356, contracts are binding regardless of form if essential elements are present. The Court applied the doctrine of laches against the heirs who waited 25 years to challenge Hilajos' possession, during which he openly occupied the land, paid taxes, and made improvements. The decision establishes that private documents can validly transfer property rights between parties and that unreasonable delay in asserting ownership rights can bar recovery through laches, even for registered land.