Patent No. EP3379899 (titled "Vehicle Window Glass With Electrical Connector Soldered By Lead-Free Solder") was filed by Central Glass on Mar 21, 2018. 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 |
|---|---|---|
| SAINT GOBAIN | Jul 28, 2021 | GEBAUER |
| AGC GLASS EUROPE | Jul 27, 2021 | AGC GLASS EUROPE |
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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