Returned goods refund claims: Rule 173L governs entitlement, and credit notes plus no sale can defeat unjust enrichment.

Refund claims for returned goods under Rule 173L were treated as governed by that rule's substantive refund framework, with Section 11B relevant only to limitation and not as an ordinary bar of unjust enrichment. Where the goods were rejected, no completed sale took place, and credit notes were issued for accounting adjustment, the duty incidence was held not to have been passed on to buyers, so unjust enrichment did not defeat the claim. On the later enquiry, res judicata did not bar the limited examination directed earlier, but once the assessee showed non-passing of duty, the burden shifted to the Revenue to rebut it, and that burden was not discharged.

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Issues: (i) whether refund of duty on goods returned to the factory under Rule 173L was governed by the bar of unjust enrichment under Section 11B, and whether the issuance of credit notes and absence of sale showed that the duty incidence had not been passed on; (ii) whether the fresh proceedings initiated by the department were barred by res judicata and whether the burden of proving passing on of duty lay on the assessee or the Revenue.

Issue (i): whether refund of duty on goods returned to the factory under Rule 173L was governed by the bar of unjust enrichment under Section 11B, and whether the issuance of credit notes and absence of sale showed that the duty incidence had not been passed on.

Analysis: Rule 173L was treated as the governing provision for refund on returned goods, with Section 11B being relevant only to the extent of time limit and not to the substantive conditions for refund. The goods in question had been rejected and returned, there was no completed sale, and credit notes were issued only for accounting adjustment. On those facts, the duty incidence was not treated as having been passed on to buyers. The earlier reasoning in the cited authorities was followed to hold that where there is no sale and the refund relates to returned goods, the bar of unjust enrichment is not attracted in the same manner as in ordinary refund claims.

Conclusion: The refund was not hit by unjust enrichment, and the assessee succeeded on this issue.

Issue (ii): whether the fresh proceedings initiated by the department were barred by res judicata and whether the burden of proving passing on of duty lay on the assessee or the Revenue.

Analysis: The later proceedings were confined to the examination directed earlier on the aspect of unjust enrichment, and to that extent they were not faulted. At the same time, the department could not sustain a fresh denial on matters already concluded beyond the scope of that examination. On burden of proof, the initial onus in an unjust enrichment inquiry was on the claimant to show that the duty burden had not been passed on, but once credit notes and the absence of sale were shown, the burden shifted to the Revenue to rebut that position. The Revenue did not discharge that burden.

Conclusion: The plea of res judicata did not defeat the limited enquiry undertaken, but the Revenue's challenge failed because the burden shift on unjust enrichment was not effectively rebutted.

Final Conclusion: The order allowing refund was upheld and the Revenue's appeal was rejected.

Ratio Decidendi: In refund claims relating to goods returned without sale, Rule 173L governs the substantive entitlement, Section 11B does not attract the bar of unjust enrichment in the ordinary way, and once the assessee shows non-passing of duty through credit notes and the absence of sale, the burden shifts to the Revenue to prove otherwise.

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