Facts

• The controversy concerned Lot No. 3098, land originally claimed by Sebastian Sumaoang.
• During Sebastian's absence, Florencio Domingo obtained a homestead patent over the land, giving rise to a long legal struggle to recover it.
• The Sumaoangs (the clients) engaged Atty. Jorge A. Pascua (their counsel) to prosecute the recovery. By a letter dated December 17, 1964, it was agreed that Atty. Pascua would receive a contingent fee of at least one-half of the property recovered.
• The recovery effort succeeded.
• In 1979, Atty. Pascua filed a complaint for collection of attorney's fees against his former clients before the Court of First Instance of Guimba, Nueva Ecija.
• Court of First Instance — the fee is fixed in money (31 August 1982). In its judgment of 31 August 1982, the trial court held that Atty. Pascua was entitled only to "the equivalent of one-half of the property — in its peso valuation," and ordered petitioner Andres Sumaoang and his brothers Vitaliano and Pedro to pay attorney's fees of ₱110,000.
• In the execution that followed, however, Atty. Pascua ended up with title to the land itself — not merely the monetary equivalent the judgment had fixed. (He therefore held registered title to something the judgment never awarded him — property acquired through mistake in the execution, which the law impresses with a constructive trust in favour of the person truly entitled.)
• Before the Supreme Court. Andres Sumaoang brought the matter to the Supreme Court.

Issue

Ruling

Ratio

• The starting point was the decree itself.
• The trial court had deliberately awarded Atty. Pascua the peso equivalent of one-half of the property, not the property.
• Execution could not enlarge the judgment.
• Whatever title he acquired beyond that measure had no basis in the decree that was its supposed source.

• Under Article 1456§, a person who acquires property through mistake or fraud is, by force of law, considered a trustee of an implied trust for the benefit of the person from whom the property comes.
• More broadly, constructive trusts are raised by equity against one who, through any form of unconscionable conduct, has obtained or holds legal title to property which he ought not, in good conscience, retain.
• Applying this, Atty. Pascua held the title to the extent it exceeded his award not as owner but as trustee for his former clients.

• The Court reinforced the result with Article 22§:

Every person who through an act of performance by another, or any other means, acquires or comes into possession of something at the expense of the latter without just or legal ground, shall return the same to him.

• Atty. Pascua obtained the land at the Sumaoangs' expense and beyond what the judgment justified.
• There was no legal ground to retain it.

• Because the trustee's holding was for the beneficiaries' account throughout, the obligation to restore extends beyond the land itself to the net profits derived from it during the period he held it.
• A constructive trustee is not permitted to keep the fruits of property he was never entitled to retain.

Doctrine

• Article 1456§ and constructive trusts. One who acquires property through mistake, fraud, or any unconscionable conduct is deemed a trustee for the benefit of the true owner; the trust is imposed by law, irrespective of intention.
• Article 22§ — unjust enrichment. Anything acquired at another's expense without just or legal ground must be returned.
• Execution cannot exceed the judgment. A money award does not authorise the taking of the property itself; title acquired beyond the decree is held in constructive trust.
• Scope of restitution. The constructive trustee must reconvey the property and account for the profits derived from it while he held it.