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Patent No. EP3778982 (titled "Method Of Coating One Or More Metal Components Of A Fuel Cell Stack, Component Of A Fuel Cell Stack And Apparatus For Coating One Or More Components Of A Fuel Cell Stack") was filed by IHI Hauzer Techno Coating on Oct 7, 2019. The application was issued on Jul 5, 2023.

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.
| Company | Opposition Date | Representative |
|---|---|---|
| MARTINEZ | Apr 4, 2024 | PAGE WHITE FARRER |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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