Patent No. EP4021147 (titled "Induction Heating Device, Casing Element And Method For Preventing Wear Of A Magnetic Flux Conducting Element Using The Casing Element") was filed by E Zoller Einstell UND Messgerte on Dec 1, 2021. The application was issued on Jan 21, 2026.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
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