Patent No. EP4341111 (titled "Vehicle Windowpane With Pdlc Sunshade Arrangement") was filed by Webasto SE on May 12, 2022. The application was issued on Dec 10, 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 |
|---|---|---|
| PILKINGTON GROUP | Sep 10, 2026 | STANLEY |
| SAINT GOBAIN SEKURIT FRANCE | Sep 10, 2026 | GEBAUER |
| SOYLU | Sep 10, 2026 | SOYLU |
| COCREATEIP | Sep 7, 2026 | GONG |
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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