Patent No. EP2679559 (titled "Inorganic Board And Method For Manufacturing Inorganic Board") was filed by Nichiha on Jan 7, 2013. The application was issued on Sep 21, 2016.

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 |
|---|---|---|
| CEMBRIT HOLDING | Jun 20, 2017 | GUARDIAN CONSULTING IS |
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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