Patent No. EP2579666 (titled "Telecommunication System With Allocation Of Access Rights For A Telecommunications Channel To Subscriber Stations Of A Telecommunications Network") was filed by Ipcom on Feb 15, 2000. The application was issued on Oct 19, 2016.

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 |
|---|---|---|
| HTC CORPORATION | Jul 19, 2017 | EMDE |
| TELEFONAKTIEBOLAGET L M ERICSSON PUBL | Jul 19, 2017 | HOFFMANN EITLE |
| VODAFONE GMBH | Jul 18, 2017 | JOSTARNDT PATENTANWALTS |
| APPLE INC. | Jul 17, 2017 | SAMSON & PARTNER PATENTANWALTE MBB |
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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