Jun 17, 2004civil procedureejectmentunlawful detainerjurisdictionrules of court

Waiving Complaint Defects: How Trial Participation Impacts Jurisdiction

Learn how participating in trial can waive defects in an ejectment complaint, affecting jurisdiction over unlawful detainer cases.


In a dispute over possession of property, the exact wording of a complaint can make or break a case. But what happens when a party raises defects in the complaint only after losing at trial? The Supreme Court addressed this in Ayson v. Enriquez Vda. de Carpio (G.R. No. 152438, June 17, 2004), clarifying that defects in a complaint are deemed waived when the parties proceed to trial without challenging them.

The Facts of the Case

Lolita R. Ayson owned three parcels of land in Pampanga. In 1980, she mortgaged these properties to the Philippine National Bank. When she failed to redeem the properties after foreclosure, the Bank acquired title to them in 1985.

In 1999, the Bank sold one of the properties to Marina Enriquez Vda. de Carpio. Ayson filed a complaint for annulment of title and reconveyance before the Regional Trial Court (RTC). Meanwhile, Carpio sent demand letters requiring Ayson to vacate the property. When Ayson refused, Carpio filed an ejectment complaint before the Municipal Trial Court (MTC).

The MTC ruled in favor of Carpio, and the RTC affirmed on appeal. Ayson then elevated the case to the Court of Appeals, arguing that the MTC lacked jurisdiction over the case.

The Issue Presented

The central question was whether the MTC had jurisdiction over the ejectment complaint. Ayson argued that the complaint failed to allege facts constitutive of unlawful detainer, making it actually an accion publiciana—a case that belongs to the RTC, not the MTC.

The Supreme Court's Ruling

The Supreme Court denied Ayson's petition and affirmed the lower courts' decisions. The Court held that while the complaint may have been vague in certain respects, these defects were not fatal.

Defects Waived by Trial Participation

The Court applied Section 5, Rule 10 of the Rules of Court, which provides that issues not raised in the pleadings but tried with the express or implied consent of the parties shall be treated as if they had been raised in the pleadings.

Ayson participated in the trial on the merits without objecting to the defects in the complaint. She presented her own defenses, including claims that Carpio was not in actual possession and that the acquisition of title was fraudulent. By doing so, she joined the issues as fully as if they had been perfectly pleaded.

The Nature of the Action

The evidence presented during trial revealed that the case was indeed one for unlawful detainer. After the foreclosure and Ayson's failure to redeem, she was divested of ownership. Her continued possession was merely tolerated by Carpio, who acquired a better right to possess the property through the sale with the Bank.

Issues Raised Late Cannot Be Considered

The Court also rejected Ayson's argument that there was no proof she received the demand letters. This issue was raised for the first time on appeal. The Court emphasized that matters not taken up before the lower courts cannot be raised for the first time on appeal.

Practical Takeaways

  • Participating in trial can waive defects in a complaint. If a party goes to trial without objecting to deficiencies in the pleading, those defects are considered waived.
  • Jurisdiction is determined by the allegations in the complaint, but evidence presented during trial can clarify the true nature of the action.
  • Ejectment cases belong to the MTC when the issue is possession de facto, even if ownership is incidentally involved.
  • Raise all objections at the earliest opportunity. Issues not raised before the trial court cannot be raised for the first time on appeal.
  • Tolerated possession becomes unlawful upon demand to vacate. A party who continues to occupy property after being divested of ownership may be ejected through summary proceedings.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.

This article is general information and not legal advice. For your situation, ask ASG Legal AI or book a consultation.