Title
Yon Mitori International Industries vs. Union Bank of the Philippines
Case
G.R. No. 225538
Decision Date
Oct 14, 2020
Union Bank mistakenly credited Tan's account with a dishonored check; Tan refused reimbursement. SC upheld CA, ruling unjust enrichment, ordering Tan to repay P385,299.40 with 6% interest.

Case Summary (G.R. No. 225538)

Facts

Tan, doing business as Yon Mitori, maintained a current account with Union Bank. On November 12, 2007 he deposited a BPI check for P420,000 drawn on Angli Lumber’s account. Union Bank’s system erroneously credited the amount to Tan’s account before the check was actually cleared; Tan then withdrew P480,000 (reflecting the credited funds plus other balances). Later the check was returned dishonored for “Account Closed.” Union Bank notified Tan and demanded reimbursement; Tan refused. Union Bank debited the remaining balance of P34,700.60 and filed a Complaint for Sum of Money to recover the outstanding P385,299.40 plus damages.

Procedural history

The Regional Trial Court (Pasig City, Branch 166) rendered judgment for Union Bank on February 24, 2014, ordering Tan to pay P385,299.40 with 12% legal interest, attorney’s fees of P100,000, and costs. The Court of Appeals affirmed the judgment with modification on February 3, 2016: it deleted attorney’s fees and costs, and reduced interest to 6% per annum. A motion for reconsideration was denied on July 5, 2016. A petition for review by Yon Mitori (substantively Tan) to the Supreme Court was filed and ultimately resolved.

Issue presented

Whether the Court of Appeals erred in affirming the RTC’s order directing Tan to return the proceeds of the dishonored check with legal interest, taking into account Union Bank’s alleged technical error/gross negligence and relevant principles (solutio indebiti, unjust enrichment, liability of a collecting bank, and Article 1909).

Procedural/standing determination by the Supreme Court

Yon Mitori, as a single proprietorship, lacks separate juridical personality; the real party in interest is Tan. The petition filed in Yon Mitori’s name was a formal defect; the Court allowed substitution of Tan as petitioner in the interest of justice under Rule 10, Sec. 4, consistent with prior jurisprudence (Juasing Hardware).

Collecting bank status and obligations

The Court treated Union Bank as the collecting bank for the BPI check. A collecting bank’s obligation to credit a depositor’s account arises only after the drawee bank has paid the check or the check has been cleared. Because the check was ultimately dishonored, Union Bank had no obligation to have paid the proceeds to Tan; the premature crediting was a technical/system error and not a valid payment obligation.

Application of unjust enrichment (Article 22)

The Court found the requisites of unjust enrichment satisfied: (1) Tan was unjustly benefited by retaining and using funds to which he was not entitled; and (2) that benefit was at Union Bank’s expense. The Court emphasized Tan’s knowledge that Angli Lumber’s BPI account had been closed — supported by prior return advices for five earlier checks — and concluded Tan withdrew and used the proceeds despite such knowledge, conduct indicative of bad faith. Under Article 22 and relevant authorities, Tan thus must return the amount he received by reason of the erroneous credit.

Solutio indebiti, mistake, and PNB v. Cheah

The Court addressed Tan’s invocation of solutio indebiti and reliance on PNB v. Cheah, which precludes recovery where the mistake is one of gross negligence by the payor bank. The Supreme Court distinguished PNB v. Cheah on the facts: in PNB v. Cheah, PNB failed to observe a 15‑banking‑day clearing rule, and the bank’s conduct amounted to gross negligence; moreover, the accommodated depositor in that case did not retain benefit (funds were given to a third party). Here, the record did not establish that Union Bank’s conduct rose to the level of gross negligence comparable to PNB v. Cheah. The error was a technical/system error and Union Bank promptly notified Tan of the dishonor. Moreover, Tan actually withdrew and used the funds, and had prior notice of repeated dishonors from the same drawer. Therefore PNB v. Cheah was inapplicable and did not bar recovery.

Article 1909 (collecting agent) and Metrobank v. CA

Tan argued that as collecting agent Union Bank should be held solely liable under Article 1909 (quasi‑contractual duty of agents) and cited Metrobank v. CA. The Court found this reliance misplaced. Metrobank v. CA involved a bank’s representations that led a principal depositor to allow withdrawals and the bank’s negligence caused the principal’s loss; in the present case, Tan did not suffer loss—he gained from the erroneous credit. The Court stressed that Tan had no right to the proceeds and, having withdrawn them, was unjustly enriched. Any remedy Tan may have against the drawer (Angli Lumber) is separate; Article 1909 does not shield him from restitut

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