G.R. No. 134699 - Union Bank of the Philippines vs. Court of Appeals

Republic Act No. 1405, as amended, declares all bank deposits “absolutely confidential” and enumerates six exceptions to that rule.
Exception (6) allows disclosure “in cases where the money deposited or invested is the subject matter of the litigation.”
The core issue is whether Union Bank’s petition for account examination fits this exception.

On March 31, 1990, Allied Bank’s Account No. 0111-01854-8 was debited for Check No. 11669677 in the amount of ₱1,000,000.00, payable to Jose Ch. Alvarez.
Alvarez deposited the check with Union Bank, which credited ₱1,000,000.00 to his account.
On May 21, 1990, Union Bank forwarded the check for clearing; due to a teller’s error the amount was under-encoded as ₱1,000.00.
The under-encoding was discovered almost a year later, on May 7, 1991, when Union Bank sent a charge slip to Allied Bank for ₱999,000.00 to correct the discrepancy.

Allied Bank refused to honor the charge slip, asserting the transaction was completed per original instruction and the drawer’s account lacked funds.
Union Bank filed an arbitration complaint with the Philippine Clearing House Corporation (PCHC) Arbitration Committee, seeking:

Union Bank then petitioned the Makati RTC to examine Allied Bank’s Account No. 0111-01854-8; the RTC dismissed the petition for lack of an applicable exception under RA 1405.
The Court of Appeals affirmed, holding that Union Bank’s cause of action arose from violation of PCHC rules and that the deposit itself was not the subject matter of the arbitration.

Whether disclosure may be ordered under RA 1405’s exception for cases in which “the money deposited … is the subject matter of the litigation.”
Whether Union Bank’s action seeks the deposited funds themselves or merely damages for Allied Bank’s alleged breach of PCHC clearing rules.