Chu vs. Cunanan

A compromise agreement that waives "any and all claims" between parties extinguishes the entire indivisible cause of action arising from a single contract, barring a subsequent suit over subject matter not explicitly enumerated in the agreement but intrinsically linked to the same cause of action.

Spouses Manuel and Catalina Chu (Chus) sold five parcels of land to Trinidad N. Cunanan (Cunanan) via a deed of sale with assumption of mortgage, stipulating that ownership would transfer only upon full payment of the purchase price. Cunanan paid only a portion of the price but managed to transfer the titles to her name and mortgage the properties. She subsequently transferred two lots to Spouses Amado and Gloria Carlos (Carloses), who later sold them to Benelda Estate Development Corporation (Benelda Estate), and assigned the remaining three lots to Cool Town Realty. The Chus annotated an unpaid vendor's lien on three of the lots.

• Deed of Sale and Side Agreement: On September 30, 1986, the Chus sold five parcels of land to Cunanan for ₱5,161,090.00. A side agreement clarified that Cunanan had only paid ₱1,000,000.00 to the Chus, with ₱1,600,000.00 paid directly to mortgagees, leaving a balance of ₱2,561,090.00. The parties stipulated that ownership would remain with the Chus until full payment.
• Unauthorized Transfers: Cunanan transferred the titles to her name without the Chus' knowledge and without paying the balance. She borrowed money using the lots as security and transferred two lots to the Carloses on July 29, 1987. The Chus annotated an unpaid vendor's lien on the remaining three lots on March 18, 1988. Despite the lien, Cunanan assigned these three lots to Cool Town Realty on May 25, 1989. The Carloses subsequently sold their two lots to Benelda Estate in 1995.
• First Suit and Compromise: In February 1988, the Chus filed Civil Case No. G-1936 against the Cunanans, later impleading Cool Town Realty and Benelda Estate. On December 2, 1999, the Chus, Cunanans, and Cool Town Realty executed a compromise agreement. The Cunanans transferred their 50% share in the Cool Town Realty lots to the Chus, and the parties waived "any and all their respective claims against each other as alleged in the pleadings." The RTC approved the agreement on January 25, 2000.
• Second Suit: On April 30, 2001, the Chus filed Civil Case No. 12251 against the Carloses and Benelda Estate, seeking the cancellation of the TCTs over the two lots registered in Benelda Estate's name, plus damages. The complaint was later amended to include the Cunanans.

• Scope of the Compromise Agreement: Petitioners maintained that the compromise agreement did not apply or extend to the Carloses and Benelda Estate because they were not parties to it.
• Subject Matter Exclusion: Petitioners argued that the compromise agreement made no reference to the two lots now registered in Benelda Estate's name; thus, the waiver of claims did not cover the action for cancellation of those specific titles.

• Bar by Prior Judgment: Respondents countered that the compromise agreement ended the legal controversy regarding the cause of action arising from the deed of sale covering all five lots, rendering Civil Case No. 12251 barred by res judicata.
• Splitting a Cause of Action: Respondents argued that the filing of Civil Case No. 12251 contravened the rule against splitting a single cause of action, as both suits originated from the same violation of the deed of sale with assumption of mortgage.
• Payment and Abandonment: The Cunanans asserted that the claim had been fully settled, waived, and abandoned by virtue of the compromise agreement.

• Res Judicata: Whether Civil Case No. 12251 was barred by res judicata although the compromise agreement did not expressly include Benelda Estate as a party and made no reference to the lots registered in Benelda Estate's name.

• Res Judicata: The petition was denied, the compromise agreement having extinguished the entire cause of action. A compromise agreement has the effect of res judicata upon the parties and must be read as a whole to ascertain their intent. The phrase waiving "any and all their respective claims against each other" was broad enough to cover all claims arising from the deed of sale. Because the deed of sale covered all five lots as a single, indivisible contract, limiting the compromise to the three lots explicitly mentioned would contravene the objective of the first suit to enforce or rescind the entire contract. The requisites of res judicata were present: (1) the judgment based on the compromise was final and unappealable; (2) the RTC had jurisdiction; (3) the settlement of all claims constituted a judgment on the merits; and (4) there was identity of parties, subject matter, and causes of action. Substantial identity of parties sufficed, as the Carloses and Benelda Estate were privies of the Cunanans as successors-in-interest. Both suits shared the same subject matter (the properties under the deed of sale) and the same cause of action (Cunanan's failure to pay the full purchase price). Filing a separate suit for the remaining lots constituted an impermissible splitting of a single cause of action, justifying the dismissal of Civil Case No. 12251.

• Res Judicata — A final judgment or decree on the merits rendered by a court of competent jurisdiction is conclusive of the rights of the parties or their privies in all later suits on all points and matters determined in the previous suit. Requisites: (a) the former judgment must be final; (b) it must have been rendered by a court having jurisdiction of the subject matter and the parties; (c) it must be a judgment on the merits; and (d) there must be between the first and second actions (i) identity of parties, (ii) identity of the subject matter, and (iii) identity of cause of action. The Court applied the doctrine to bar the second suit, emphasizing that absolute identity of parties is not required; substantial identity or community of interests suffices, and transferees are considered privies of the original parties.
• Splitting a Cause of Action — The act of dividing a single or indivisible cause of action into several parts or claims and instituting two or more actions upon them. A single cause of action cannot be split up to be the subject of two or more different actions. The Court applied this doctrine because the Chus sought to enforce or rescind a single, indivisible contract (the deed of sale) piecemeal, first suing over three lots and then filing a separate action for the remaining two, despite the total breach of the entire contract.

• "If two or more suits are instituted on the basis of the same cause of action, the filing of one or a judgment upon the merits in any one is available as a ground for the dismissal of the others."
• "Mere substantial identity of parties, or even community of interests between parties in the prior and subsequent cases, even if the latter were not impleaded in the first case, was sufficient."
• "The Chus could not be permitted to split up a single cause of action and make that single cause of action the basis of several suits."

• Chu, Sr. v. Benelda Estate Development Corporation, G.R. No. 142313 (March 1, 2001) — Controlling precedent in the prior suit; upheld the dismissal of Civil Case No. G-1936 as against Benelda Estate for failure to state a cause of action due to its good faith purchase.
• Cruz v. Court of Appeals, G.R. No. 135101 (May 31, 2000) — Followed for the principle that absolute identity of parties is not a condition sine qua non for res judicata; a shared identity of interest or substantial identity suffices.
• Perez v. Court of Appeals, G.R. No. 157616 (July 22, 2005) — Followed for the definition of splitting a cause of action as the act of dividing a single or indivisible cause of action into several parts or claims and instituting two or more actions upon them.

• Article 2028, Civil Code — Defines a compromise agreement as a contract whereby the parties, by making reciprocal concessions, avoid a litigation or put an end to one already commenced. Applied to characterize the settlement between the Chus and the Cunanans.
• Article 2036, Civil Code — Provides that a compromise encompasses objects specifically stated therein, although it may include other objects by necessary implication. Applied to extend the scope of the compromise agreement to the two lots not explicitly mentioned, as they were necessarily included in the waiver of all claims arising from the indivisible deed of sale.
• Section 4, Rule 2, Rules of Court — States that if two or more suits are instituted on the basis of the same cause of action, the filing of one or a judgment upon the merits in any one is available as a ground for the dismissal of the others. Applied to justify the dismissal of Civil Case No. 12251 due to the splitting of a single cause of action.

Renato C. Corona (CJ, Chairperson), Teresita J. Leonardo-De Castro, Mariano C. del Castillo, Jose Portugal Perez