G.R. No. 167405 ; February 16, 2006
ANA JOYCE S. REYES, Petitioner, vs. HON. CESAR M. SOTERO, Presiding Judge, RTC of Paniqui, Tarlac, Branch 67, ATTY. PAULINO SAGUYOD, the Clerk of Court of Branch 67 of the RTC at Paniqui, Tarlac in his capacity as Special Administrator, CORAZON CHICHIOCO, ANGELITO LISING, ERLINDA ESPACIO, GONZALO ZALZOS and ERNESTO LISING, Respondents.

FACTS

Respondent Corazon Chichioco filed a petition for letters of administration over the intestate estate of the late Elena Lising, claiming to be a niece and heir. Petitioner Ana Joyce S. Reyes opposed, asserting she was the sole heir as the legally adopted child of Lising and her predeceased husband. Reyes submitted certifications from the civil registrar and the clerk of court, a Judicial Form No. 43, and a PVAO decree of final distribution as documentary proof of her adoption pursuant to a 1968 court decree. Chichioco and other respondents challenged the validity of the adoption, filing a separate petition for annulment of the decree with the Court of Appeals, which was later dismissed for procedural non-compliance. They also raised “badges of fraud” and initiated a criminal complaint for falsification against Reyes.

ISSUE

Whether the Regional Trial Court, in the special proceedings for the settlement of Elena Lising’s estate, can require petitioner Ana Joyce S. Reyes to re-prove the fact of her adoption despite the existence of a final and executory adoption decree.

RULING

No. The Supreme Court ruled that a final judgment of adoption, such as the 1968 decree in favor of Reyes, is conclusive and can no longer be attacked collaterally in a separate proceeding for the settlement of the decedent’s estate. The legal logic is anchored on the doctrine of conclusiveness of judgment and the rules on evidence. A judicial decree of adoption, once final, enjoys the presumption of regularity in the proceedings that led to its issuance. The burden of proof shifts to the party challenging its validity, who must present clear and convincing evidence to overcome this presumption. In this case, respondents’ collateral attack, based merely on alleged irregularities and a separate dismissed annulment case, is impermissible. The probate court’s duty in the settlement proceedings is to ascertain the heirs for purposes of distribution, not to re-litigate the validity of a final adoption. To allow such a collateral attack would undermine judicial stability and finality. Therefore, the Court of Appeals erred in requiring Reyes to prove her adoption anew. The RTC must recognize her status as an adopted child and sole heir based on the existing final decree.