Patent No. EP2411850 (titled "Optical Article Coated With An Antireflection Or Reflective Coating Comprising An Electrically Conductive Film Based On Tin Oxide, And Production Metho") was filed by Essilor on Mar 26, 2010. The application was issued on Feb 26, 2020.

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 |
|---|---|---|
| CARL ZEISS | Oct 6, 2017 | GLAWE |
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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