Key legal question
Whether the notice of the bankruptcy hearing was validly deemed served despite the registered letter being unclaimed.
Extracted holding
No. The deemed-service fiction of Art. 138(3)(a) CPC did not apply because the bankruptcy proceedings had not yet created a procedural relationship requiring the debtor to expect such a notice.
Extracted reasoning
The bankruptcy request starts a new procedure; before that, the debtor has no duty under good faith to monitor for a hearing notice. A missing valid hearing notice violates the right to be heard and cannot be cured on appeal.