Patent No. EP3267722 (titled "Fixed Hs-Dsch Or E-Dch Allocation For Voip (Hs-Dsch Without Hs-Scch/E-Dch") was filed by Conversant Wireless Licensing S RL on Apr 25, 2006. The application was issued on Mar 27, 2019.

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 |
|---|---|---|
| DAIMLER | Jan 2, 2020 | DRUSCHEL |
| CONTINENTAL AUTOMOTIVE | Dec 30, 2019 | BRAUN DULLAEUS PANNEN EMMERLING PATENT & RECHTSANWALTSPARTNERSCHAFT MBB |
| HUAWEI | Dec 27, 2019 | BRAUN DULLAEUS PANNEN EMMERLING PATENT & RECHTSANWALTSPARTNERSCHAFT MBB |
| LG ELECTRONICS DEUTSCHLAND | Dec 27, 2019 | KATERLE |
| ZTE | Dec 27, 2019 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB |
| ROBERT BOSCH | Dec 20, 2019 | HESELBERGER |
| TOMTOM SALES | Dec 20, 2019 | HAUPT |
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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