In the case of Versuni Holding B.V. Trading as Preethi v. Maya Appliances Private Limited, the patent holder had already sued for infringement before the Delhi High Court. The alleged infringer then filed a written statement there seeking invalidity and revocation of the patent, but also filed a separate revocation petition before the Madras High Court. The Madras High Court dismissed that separate revocation petition and accepted the objection to its maintainability.
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