Patent No. EP3429844 (titled "Composite Pane Having Electrically Conductive Coating For A Head-Up Display") was filed by Saint Gobain on Mar 1, 2017. The application was issued on Apr 9, 2025.

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 |
|---|---|---|
| AGC GLASS EUROPE | Jul 28, 2021 | AGC GLASS EUROPE |
| PILKINGTON GROUP | Jul 27, 2021 | FORTT |
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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