Facts

• In 1953, Basilisa Comerciante purchased a 150-square-metre residential lot in Cavite City.
• On December 17, 1975, Basilisa executed a notarised "Kasulatan sa Kaloob-pala" (Donation) in favour of her four children — Rosario, Consolacion, Apolinaria (the petitioner) and Florentino.
• The deed stated the gift was "ganap at hindi mababawi" — absolute and irrevocable — but also provided that it would take effect only upon her death, that she would keep possession of the title during her lifetime, and that the property could not be sold or mortgaged while she was alive. A testator cannot validly waive the power to revoke, so a binding irrevocability clause is something that can exist only in an inter vivos grant.
• The donees signed their acceptance on the same instrument. Acceptance is required for an inter vivos donation and never given for a mortis causa one during the donor's lifetime, so the clause is itself a classifier.
• The prohibition on selling bound the donor as well as the donees. (That Basilisa forbade herself is proof that the naked ownership had already gone — she was no longer free to dispose of what she had given.)
• On February 6, 1979, Basilisa executed a Deed of Absolute Sale of the same property to her daughter Apolinaria Austria-Magat for ₱5,000.00; on February 8, 1979 the Register of Deeds cancelled her title and issued TCT No. T-10434 in Apolinaria's name. She never sued to revoke and alleged no breach — and revocation under the Code is a judicial remedy, not something a donor accomplishes by executing another deed.
• After Basilisa's death the other heirs sued in the RTC of Cavite to annul Apolinaria's title and for reconveyance, arguing the 1975 donation was inter vivos and had made them co-owners.
• On August 15, 1986, the RTC dismissed the case, holding the donation mortis causa and void for want of testamentary formalities; on June 30, 1989 the Court of Appeals reversed, declaring the donation inter vivos and the sale null and void; the Supreme Court decided the appeal on February 1, 2002.

Issue

Ruling

"Irrevocability is a quality absolutely incompatible with the idea of conveyances mortis causa."

Ratio

• The irrevocability test. "Irrevocability" is the "distinctive standard" identifying a document as a donation inter vivos. Under Article 828§ a will is revocable ad nutum and any waiver of that right is void, so a donation expressly waiving the right to revoke cannot be mortis causa.
• The "effectivity" clause. Applying Article 729§, the phrase that the donation shall "take effect" upon death refers only to the transmission of beneficial ownership (dominium utile) — the right to possess and enjoy the fruits — and does not prevent the immediate transmission of naked ownership (nuda proprietas) upon execution.
• The reservation clause diagnostic. The donor reserved "poder o possession" and the fruits. Following Bonsato v. Court of Appeals, such a reservation would be "unnecessary if the ownership of the donated property remained with the donor," proving she intended to part with the naked title immediately.
• Acceptance as a diagnostic marker. The donees formally accepted the gift in the deed. Under Article 749§ acceptance is required for the validity and perfection of an inter vivos donation, whereas mortis causa dispositions are never accepted during the donor's lifetime.
• Prohibition to alienate. The deed barred both the donor and the donees from selling during the donor's lifetime. That the donor prohibited herself is "proof that naked ownership … has been transferred to the donees," she having already divested herself of the right to dispose.
• Prescription. Because the 1979 sale was based on an "honest but erroneous interpretation" of the deed and no fraud was proven, the four-year prescriptive period for fraud did not apply.

Doctrine

1. Nature over nomenclature: "That the document in question in this case was captioned 'Donation Mortis Causa' is not controlling. This Court has held that, if a donation by its terms is inter vivos, this character is not altered by the fact that the donor styles it mortis causa."
2. Characteristics of mortis causa: a transfer is mortis causa if it (a) conveys no title before death; (b) is revocable ad nutum; and (c) is void if the donor survives the transferee. None was present here.
3. Presumption in case of doubt: "In case of doubt the conveyance should be deemed a donation inter vivos rather than mortis causa, in order to avoid uncertainty as to the ownership of the property subject of the deed."
4. A self-imposed restraint proves the transfer: where the donor forbids herself to alienate, she has already parted with the jus disponendi.
5. Revocation is judicial: a perfected donation inter vivos is undone only on the statutory grounds and by court action — not by executing a later deed of sale.

Assigned twice. The syllabus lists this case under a. As to Taking Effect — Instances of donations inter vivos and again under d. Revocation and Reduction — Failure to comply with conditions (Art. 764§): remedy of donor. Both assignments are answered from the single digest below — the supra entry re-uses this holding rather than adding a new one. The second heading is earned by contrast: Basilisa never sought revocation on any statutory ground, and her attempt to undo the gift by selling the land instead is precisely what the donor's remedy under Article 764 is not.

Full Digest — Recitation Format

I. Gist and Central Doctrine

II. Chronological Narration of Material Facts

• In 1953, Basilisa Comerciante purchased a 150-square-metre residential lot in Cavite City.
• On December 17, 1975, Basilisa executed a notarised document designated "Kasulatan sa Kaloob-pala" (Donation) in favour of her four children: Rosario, Consolacion, Apolinaria (the petitioner) and Florentino.
• The deed stated that the gift was "ganap at hindi mababawi" (absolute and irrevocable) but included provisos that it would take effect only upon her death, that she would retain possession of the title during her lifetime, and that the property could not be sold or mortgaged while she was alive.
• The donees signed their acceptance on the same instrument.
• On February 6, 1979, Basilisa executed a Deed of Absolute Sale of the same property in favour of her daughter, petitioner Apolinaria Austria-Magat, for ₱5,000.00.
• On February 8, 1979, the Register of Deeds cancelled Basilisa's title and issued TCT No. T-10434 in Apolinaria's name.
• Following Basilisa's death, the other heirs (respondents) filed an action in the Regional Trial Court of Cavite to annul Apolinaria's title and for reconveyance, arguing the 1975 donation was inter vivos and had made them co-owners.
• On August 15, 1986, the RTC dismissed the case, ruling the donation mortis causa and void for lack of testamentary formalities.
• On June 30, 1989, the Court of Appeals reversed the RTC, declaring the donation inter vivos and the subsequent sale to Apolinaria null and void.
• Apolinaria then appealed to the Supreme Court, which decided on February 1, 2002.

III. Arguments of the Parties

A. Petitioner (Apolinaria Austria-Magat)

B. Respondents (the Other Heirs)

C. Common Ground

IV. Issues

A. MAIN ISSUE

B. SECONDARY ISSUES

V. Ruling / Disposition

A. MAIN ISSUE

B. SECONDARY ISSUES

VI. Ratio Decidendi and Doctrines

A. Ratio Decidendi

• The irrevocability test (Art. 828§). The Court held that "irrevocability" is the "distinctive standard" that identifies a document as a donation inter vivos. Under Article 828, a will is essentially revocable ad nutum (at the will of the testator); therefore, a donation that expressly waives the right to revoke ("hindi na mababawi") cannot be mortis causa.
• The "effectivity" clause interpretation (Art. 729§). Applying Article 729, the Court ruled that the phrase stating the donation shall "take effect" upon death refers only to the transmission of beneficial ownership (dominium utile), or the right to possess and enjoy the fruits. It does not prevent the immediate transmission of naked ownership (nuda proprietas) upon the execution of the deed.
• The reservation clause diagnostic. The donor reserved for herself "poder o possession" and the fruits of the land. The Court reasoned, following Bonsato v. Court of Appeals, that such a reservation would be "unnecessary if the ownership of the donated property remained with the donor." This reservation proves the donor intended to part with the naked title immediately.
• Acceptance as a diagnostic marker (Art. 749§). The Court noted that the donees formally accepted the gift in the deed. Under Article 749, acceptance is a requirement for the validity and perfection of an inter vivos donation. Conversely, mortis causa dispositions are never accepted during the donor's lifetime.
• Prohibition to alienate. The deed prohibited both the donor and the donees from selling the property during the donor's lifetime. The Court held that this prohibition does not defeat the inter vivos character; rather, the fact that the donor also prohibited herself from alienating the property is "proof that naked ownership … has been transferred to the donees," as she had already divested herself of the right to dispose of it.
• Resolution of prescription. The Court rejected the petitioner's argument on prescription, noting that because the 1979 sale was based on an "honest but erroneous interpretation" of the deed, and no fraud was proven, the four-year prescriptive period for fraud did not apply.

B. Doctrines/Rules

1. Nature over Nomenclature: "That the document in question in this case was captioned 'Donation Mortis Causa' is not controlling. This Court has held that, if a donation by its terms is inter vivos, this character is not altered by the fact that the donor styles it mortis causa."
2. Characteristics of Mortis Causa: A transfer is mortis causa if: (a) it conveys no title before death; (b) it is revocable ad nutum; and (c) it is void if the donor survives the transferee. None of these elements were present here.
3. Presumption in Case of Doubt: "In case of doubt the conveyance should be deemed a donation inter vivos rather than mortis causa, in order to avoid uncertainty as to the ownership of the property subject of the deed."

C. Limitations/Exceptions

• The Court clarified that the motive of "love and affection" is not a definitive marker of inter vivos donations, as legacies in wills often share the same motivation. The dispositive element is the time of the transfer of the nuda proprietas.
• The prescription holding turns on the absence of proven fraud; a donor who acted fraudulently rather than on an honest misreading would face a different analysis.

D. Topic Integration

• This case is DIRECTLY controlling for "instances of donations inter vivos." It illustrates a classic instance where an instrument is classified as inter vivos despite a title suggesting otherwise and despite clauses deferring physical possession until death.
• It establishes that an express waiver of the right to revoke is the paramount indicator of a present transfer of title, making it the primary authority for interpreting deeds with conflicting "post-mortem" and "irrevocable" clauses.
• Under its second assignment — Article 764§, remedy of the donor — it teaches by contrast: revocation is a judicial remedy on statutory grounds, and a donor who instead simply sells the property to someone else conveys nothing.

VII. Separate Opinions