Revocation is Distinct from Invalidity Defence and Survives Patent Expiry, rules Delhi High Court

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The Delhi High Court held that a revocation petition under Section 64 of the Patents Act is distinct from an invalidity defence under Section 107 and remains valid post-patent expiry. The Court emphasized the broader legal impact of revocation, affirming its maintainability even when the patent has lapsed.

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Indian Patent Revocation: K. Manivannan, Vs. Shri M. Mani, Proprietor Valasumani Lathe Works

The Appellate Board dismissed the revocation request against Valasumani Lathe Works’ patent, finding no anticipation from prior art or abandoned applications. This decision clarifies key principles on anticipation and prior art for Indian patent law.

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