Limitation and essentiality certificate rules barred the duty demand and supported exemption benefit despite delayed procedural compliance.

Limitation for a show-cause notice was held to run from the date of clearances, and the pendency of a writ petition did not extend that period where the notice was issued after six months had already expired. Exemption could not be denied merely because the essentiality certificate was produced after clearance or because it referred to a later notification, since the certificate established substantive eligibility and the delay was attributable to procedural and governmental causes. On that reasoning, the demand was set aside and the notification benefit was allowed.

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Issues: (i) Whether the show-cause notice was barred by limitation. (ii) Whether denial of exemption benefit for want of an essentiality certificate at the time of clearance and for the certificate referring to a later notification was justified.

Issue (i): Whether the show-cause notice was barred by limitation.

Analysis: The duty demand arose on clearances made between 11.02.2002 and 13.02.2002, while the show-cause notice was issued on 03.12.2002, beyond the then-prescribed period of six months. The pendency of the writ petition did not prevent the revenue from issuing notice, and the writ itself was filed after limitation had already run out. The period of pendency before the High Court could not be excluded on the facts found.

Conclusion: The show-cause notice was barred by limitation, and the demand could not be sustained on that ground.

Issue (ii): Whether denial of exemption benefit for want of an essentiality certificate at the time of clearance and for the certificate referring to a later notification was justified.

Analysis: Notification No. 17/2001 and Notification No. 21/2002 granted similar concession, and the essentiality certificate ultimately issued established that the goods were required for the intended purpose. The delay in obtaining the certificate was attributable to procedural and governmental delay, not to the assessee. Production of the certificate later was held to be a procedural matter, and the benefit of the notification could not be denied merely because the certificate was issued after clearance or referred to the later notification.

Conclusion: Denial of exemption was not justified, and the assessee was entitled to the notification benefit.

Final Conclusion: The demand was set aside and the appeal succeeded with consequential relief in accordance with law.

Ratio Decidendi: Where the revenue could issue a show-cause notice within time but failed to do so, limitation cannot be extended by later writ proceedings; and an essentiality certificate, when it establishes substantive eligibility, is a procedural requirement whose delayed production does not by itself defeat exemption.

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