G.R. No. 177728 ; July 31, 2009
JENIE SAN JUAN DELA CRUZ and minor CHRISTIAN DELA CRUZ “AQUINO,” represented by JENIE SAN JUAN DELA CRUZ, Petitioners, vs. RONALD PAUL S. GRACIA, in his capacity as City Civil Registrar of Antipolo City, Respondent.

FACTS

Petitioner Jenie San Juan Dela Cruz cohabited with Christian Dominique Sto. Tomas Aquino without the benefit of marriage. Dominique died on September 4, 2005. On November 2, 2005, Jenie gave birth to their son, Christian. Jenie applied to register the child’s birth using the surname “Aquino,” submitting the child’s Certificate of Live Birth, an Affidavit to Use the Surname of the Father (AUSF) which she executed, an Affidavit of Acknowledgment from Dominique’s father, and a handwritten “Autobiography” by Dominique. In this Autobiography, Dominique referred to Jenie as his “wife” and explicitly stated, “as of now she is pregnant.” The City Civil Registrar denied the application, citing Rule 7 of the implementing rules of Republic Act No. 9255 , which requires a private handwritten instrument to be “duly signed.” The registrar argued that since Dominique died before the child’s birth, he could no longer acknowledge paternity.

ISSUE

Whether the unsigned, handwritten Autobiography of the deceased father constitutes a “private handwritten instrument” through which he expressly recognized his paternity of the unborn child, thereby allowing the illegitimate child to use the father’s surname under Article 176 of the Family Code, as amended by R.A. 9255.

RULING

Yes. The Supreme Court reversed the lower court and ordered the registration of the child’s surname as “Aquino.” The legal logic centers on the interpretation of Article 176, as amended. The law allows an illegitimate child to use the father’s surname if filiation is expressly recognized by the father “through the record of birth appearing in the civil register, or when an admission in a public document or private handwritten instrument is made by the father.” The Court held that the law does not explicitly require the private handwritten instrument to be signed. The Autobiography, penned entirely in Dominique’s own handwriting, contained a clear admission of paternity by stating his relationship with Jenie and her pregnancy. The absence of a signature does not negate its authenticity or the father’s clear intent, as the handwriting itself is a unique identifier. The Court emphasized that administrative rules, like the implementing regulation requiring a signature, cannot add a substantive requirement not found in the law itself, as this would restrict the child’s statutory right. Furthermore, the law’s intent is to benefit the illegitimate child, and a strict, technical reading that voids the father’s unambiguous written acknowledgment would defeat this purpose. Thus, Dominique’s Autobiography is a valid private handwritten instrument recognizing paternity.