Tiu Peck vs. Court of Appeals

A voluntary partition agreement between co-owners, which is duly executed and whose terms have been substantially performed by the parties taking possession of their respective shares, is valid and binding. Such an agreement constitutes a perfected contract that has the force of law between the parties, and one party may not unilaterally renege on it or seek a judicial partition of the same properties without the other's consent.

Joaquin Tiu Singco owned and operated Argentina Trading. After his death in 1974, his son, petitioner Tiu Peck, continued the business with the assistance of private respondents Tan King and Conchita M. Rubiato, who eventually became partners or co-owners. In 1983, the parties decided to end their business relationship. With the help of five respected members of the Filipino Chinese Chamber of Commerce, they executed an "Agreement on the Apportionment of Partnership Businesses," which provided for a lottery-based division of the lumber/hardware business (valued at P1,600,000) and the piggery business (valued at P1,000,000). Tiu Peck drew the lumber/hardware lot, and Tan King drew the piggery lot. Immediately thereafter, each party took possession of their allotted business and properties.

• Nature of the Relationship: Petitioner Tiu Peck and private respondent Tan King, assisted by Tan King's wife Conchita M. Rubiato, operated the Argentina Trading business. The appellate court found no formal partnership existed due to the lack of a public instrument and SEC registration, but deemed the parties co-owners of the real properties and businesses.
• The Partition Agreement: On August 31, 1983, the parties, with the help of five middlemen, executed a written agreement to terminate their business relationship and apportion the assets via a lottery. The agreement specified the estimated values of the two main businesses (lumber/hardware and piggery) and the terms of division, including a cash adjustment from the lumber/hardware winner to the piggery winner.
• Execution and Performance: Immediately after the lottery, Tiu Peck took possession of the lumber/hardware business and its property, while Tan King and Conchita Rubiato took possession of the piggery business and its property. Each party operated their respective business for three years.
• Demand for New Partition: On April 21, 1986, private respondents wrote to petitioners demanding a partition of the same properties covered by the 1983 agreement, subsequently filing a complaint for partition.

• Binding Effect of Contract: Petitioners argued that the 1983 agreement was a valid and binding contract that had the force of law between the parties. They maintained that the parties' immediate execution and performance of the agreement—taking possession of their allotted properties—compelled good faith compliance and barred either party from reneging.
• Estoppel and Equity: Petitioners contended that private respondents were estopped from questioning the agreement after having accepted and operated the piggery business for three years. They invoked the principle of equity to protect their vested rights accrued under the fully executed agreement.

• Challenge to Agreement's Validity: While the specific arguments of respondents are not detailed in the provided text, the nature of their action for partition implies they contested the validity or finality of the 1983 agreement, likely arguing it did not constitute a definitive partition of the co-owned real properties or that it was subject to reconsideration.

• Validity and Binding Effect of the Agreement: Whether the "Agreement on the Apportionment of Partnership Businesses" dated August 31, 1983, constituted a valid and binding partition of the co-owned properties between the parties.
• Propriety of Judicial Partition: Whether the Court of Appeals erred in ordering a new partition under Rule 69 of the Revised Rules of Court, thereby disregarding the prior voluntary agreement.

• Validity and Binding Effect of the Agreement: The agreement was valid and binding. The parties voluntarily entered into the contract to divide their co-owned properties. Their subsequent act of immediately taking possession of their respective shares was the most compelling evidence of a binding partition. Contracts once perfected have the force of law between the parties and must be complied with in good faith. The respondents' three-year delay in seeking a new partition was unexplained and unjustified.
• Propriety of Judicial Partition: The Court of Appeals erred. Having correctly found a co-ownership, the appellate court should have upheld the valid partition agreement that the co-owners themselves had executed and performed. Ordering a new judicial partition superseded and violated the binding agreement already consummated by the parties.

• Autonomy of Contracts and the Force of Law — Under Article 1159 of the Civil Code, contracts are binding upon the parties and have the force of law between them. The Court applied this doctrine to hold that the voluntarily executed partition agreement was the law governing the parties' rights to the properties, and its terms could not be unilaterally disregarded.
• Determination of a Contract's Nature by Acts, Not Title — The Court reiterated that the true nature of a contract is determined not by its name or title but by the acts of the parties in performing it. Here, the parties' immediate execution of the partition by taking possession demonstrated that the "Agreement on the Apportionment" was, in substance and effect, a definitive partition contract.

• "That agreement is the law between them. Contracts shall be obligatory in whatever form they may have been entered into, provided all the essential requisites for their validity are present."
• "The fact that after signing the agreement both parties immediately took possession of their respective shares is the most compelling evidence that there was indeed a binding partition of the properties."
• "Contracts, once perfected, have the force of law between the parties who are bound to comply therewith in good faith, and neither one may, without the consent of the other, renege therefrom."

• Gonzales Mondragon v. Santos, 87 Phil. 471 — Cited for the principle that contracts solemnly and deliberately entered into may not be overturned by inconclusive proof or by a mistake of one party to which the other did not contribute.
• Cruz v. Court of Appeals, 129 SCRA 222 — Cited for the rule that in determining the nature of a contract, courts are not bound by the name given it by the parties but by the way they perform their obligations.

• Article 1159, Civil Code — Provides that obligations arising from contracts have the force of law between the contracting parties and should be complied with in good faith. Applied to enforce the partition agreement.
• Article 1356, Civil Code — States that contracts shall be obligatory in whatever form they may have been entered into, provided all the essential requisites for their validity are present. Used to validate the agreement despite it not being a formal deed of partition.
• Articles 1771 & 1772, Civil Code — Cited by the Court of Appeals for the requirements of a public instrument for partnership articles involving immovables and registration with the SEC. The Supreme Court, while noting this finding, focused on the co-ownership and contract law aspects.

Chief Justice Andres R. Narvasa, Justices Florenz D. Regalado, and Ricardo J. P. Nocon.

N/A — The decision was unanimous.