Patent No. EP2463395 (titled "Metal Plate For Radiation Heating, Process For Producing Same, And Processed Metal Having Portion With Different Strength And Process For Producing Same") was filed by Nippon Steel on Aug 5, 2010. The application was issued on Oct 30, 2019.

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 |
|---|---|---|
| AUTOTECH ENGINEERING SL | Jul 28, 2020 | DE ROOIJ |
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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