De la Cerna vs. Potot

The governing principle is that a final judgment in a probate proceeding admitting a will is binding upon the whole world and cures any error of law regarding the instrument's form or execution. However, a joint will prohibited by law remains void as to the estate of a surviving testator; consequently, the surviving testator's share cannot be disposed of by the joint instrument and must be distributed according to the rules of intestate succession.

Spouses Bernabe de la Serna and Gervasia Rebaca executed a joint will on May 9, 1939, devising two conjugal parcels of land in Borbon, Cebu, to their niece, Manuela Rebaca. The instrument reserved a life usufruct for each testator over the properties. Bernabe died on August 30, 1939, prompting the submission of the joint will for probate. The Court of First Instance issued an order on October 31, 1939, declaring the document the valid last will of Bernabe, recognizing the widow's usufruct, and ordering summary distribution of his share to the niece. Gervasia died on October 14, 1952. A subsequent petition to probate the will as to her share was dismissed in 1954 for failure to prosecute. Intestate heirs of Bernabe subsequently filed an action for partition, challenging the validity of the joint will and seeking distribution of the conjugal properties.

• On May 9, 1939, spouses Bernabe de la Serna and Gervasia Rebaca executed a joint last will and testament in the local dialect. The instrument devised two conjugal parcels of land to their niece, Manuela Rebaca, while expressly reserving the right of each testator to enjoy the fruits of the properties during their respective lifetimes.
• Bernabe de la Serna died on August 30, 1939. The joint will was submitted to the Court of First Instance of Cebu for probate. Following publication and the absence of opposition, the court issued an order on October 31, 1939, declaring the document the valid last will of Bernabe, recognizing the widow's usufruct, and decreeing the summary distribution of the decedent's share to Manuela Rebaca upon the posting of a bond.
• Gervasia Rebaca died on October 14, 1952. A separate petition to probate the same will insofar as it concerned her estate was filed on November 6, 1952. The petition was subsequently dismissed on March 30, 1954, due to the failure of the petitioner and her counsel to appear at the hearing.
• Intestate heirs of Bernabe de la Serna filed a civil action for partition of the conjugal properties. The trial court declared the joint will void under the statutory prohibition against joint wills and ordered distribution. The Court of Appeals reversed, holding that the 1939 probate decree was final and conclusive, thereby barring the partition suit.

• Petitioners maintained that the joint will is void ab initio under Article 669 of the old Civil Code and Article 818 of the new Civil Code, which expressly prohibit joint wills executed by two or more persons.
• Petitioners argued that a void instrument cannot be validated by a probate court's decree, and that the trial court correctly declared the will null and void, warranting the partition of the conjugal properties according to the rules of intestate succession.

• Respondents contended that the 1939 decree of probate was issued by a court of competent jurisdiction, became final, and is conclusive as to the due execution and validity of the will.
• Respondents argued that any error committed by the probate court was an error of law that should have been corrected by timely appeal, and that public policy demands finality of judgments, thereby precluding a collateral attack through a subsequent partition suit.

• Procedural Issues:
  • Whether a final decree of probate admitting a joint will is conclusive and binding, thereby precluding a subsequent action for partition by intestate heirs who did not appeal the original probate order.
• Substantive Issues:
  • Whether a joint will, statutorily prohibited under the Civil Code, is valid as to the estate of a deceased testator whose will was previously probated.
  • How the estate of a surviving joint testator should be distributed when the joint will was never probated as to her share prior to her death.

• Procedural:
  • The Court held that the 1939 final decree of probate is conclusive and binding upon the whole world. The probate court's error in admitting a statutorily prohibited joint will constituted an error of law, not a jurisdictional defect. Because the decree was not appealed within the reglementary period, it attained finality. The Court ruled that public policy and the maxim interest rei publicae ut finis sit litium demand that judicial determinations become final at a definite date, thereby barring the intestate heirs from collaterally attacking the decree in a partition action.
• Substantive:
  • The Court ruled that the 1939 probate decree validly disposed of the deceased husband's share, binding his heirs intestate. However, the decree could not adjudicate the wife's share, as she was alive at the time and her estate was not in issue. The Court found that the joint will remains void as to the surviving spouse's share pursuant to the Civil Code's absolute prohibition against joint wills. Accordingly, the undivided interest of Gervasia Rebaca must pass to her intestate heirs upon her death, absent a separate valid will or proof that the testamentary heir is her sole intestate successor.

• Finality of Probate Decrees / Res Judicata in Special Proceedings — A final judgment in a probate proceeding admitting a will to probate is binding upon the whole world and cannot be collaterally attacked in a subsequent civil action. The Court applied this doctrine to uphold the 1939 probate order regarding the husband's estate, emphasizing that errors of law must be corrected on direct appeal and that finality serves public policy.
• Prohibition of Joint Wills — The Civil Code strictly prohibits joint wills executed by two or more persons for reciprocal benefit or for a third person. The Court applied this doctrine to void the disposition of the surviving spouse's share, ruling that a joint will is legally treated as a separate will for each testator. Because the surviving testator's estate was never validly probated, her share must devolve by intestate succession.

• "A final judgment rendered on a petition for the probate of a will is binding upon the whole world... and public policy and sound practice demand that at the risk of occasional errors judgment of courts should become final at some definite date fixed by law." — The Court invoked this principle to establish that the 1939 probate decree, though potentially erroneous, attained finality and bars collateral attack by the intestate heirs.
• "The contention that being void the will cannot be validated, overlooks that the ultimate decision on whether an act is valid or void rests with the courts, and here they have spoken with finality when the will was probated in 1939." — The Court emphasized that jurisdictional finality supersedes abstract theoretical nullity once a competent tribunal has rendered a definitive ruling on the instrument's validity.

• Macrohon vs. Saavedra — Cited to support the proposition that courts may give effect to the provisions of a joint will that are not contrary to law, particularly as to the share of the first-to-die testator.
• Manalo vs. Paredes — Cited as controlling precedent establishing that a final probate decree is binding upon the whole world and cannot be impeached collaterally.
• In re Estates of Johnson — Cited alongside Manalo to reinforce the conclusive effect of final judgments in probate proceedings.
• Dy Cay vs. Crossfield — Cited for the maxim interest rei publicae ut finis sit litium, underscoring the public interest in the finality of litigation.
• Bilbao vs. Bilbao — Cited to explain the statutory prohibition against joint wills and to justify the ruling that such instruments are void as to the estate of a surviving testator.

• Article 669, Civil Code of 1889 — Prohibits the making of joint wills. The Court applied this provision to invalidate the disposition of the surviving spouse's share.
• Article 818, Civil Code of the Philippines — Carries forward the prohibition against joint wills in the new Civil Code, confirming the continued statutory invalidity of such instruments.
• Article 5, Civil Code of 1889 — Provides that laws are only repealed by subsequent laws, and that usage or custom cannot prevail against statutory prohibitions.
• Article 7, Civil Code of the Philippines of 1950 — Reiterates that customs or usage contrary to law, public order, or public policy shall not be given effect, thereby rejecting the respondents' argument that long-standing usage of joint wills could validate them.