Case T-81/25: Judgment of the General Court of 10 December 2025 – LTV Leuchten & Lampen v EUIPO – XAL (Lamps) (EU design – Invalidity proceedings – Registered EU design representing a lamp – Prior designs – Ground for invalidity – No disclosure of the prior designs – Prior designs produced after the filing of the application for a declaration of invalidity – Procedural irregularities before the Cancellation Division – Refusal to grant the applicant’s requests for measures of inquiry and for an oral hearing – Misuse of powers)