Patent No. EP1831013 (titled "Coated Article With Low-E Coating Including Zirconium Silicon Oxynitride And Methods Of Making Same") was filed by Centre Luxembourgeois DE Recherches Pour LE Verre ET LA Cramique on Dec 6, 2005. The application was issued on Nov 21, 2018.

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 |
|---|---|---|
| SAINT GOBAIN | Apr 26, 2016 | SAINT GOBAIN RECHERCHE |
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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