Patent No. EP2375843 (titled "Operation Of A Mobile Radio Network Using Access Permission Data") was filed by Ipcom on Feb 15, 2000. The application was issued on Apr 20, 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 |
|---|---|---|
| APPLE COMPUTER | Jan 20, 2017 | SAMSON & PARTNER PATENTANWALTE MBB |
| HTC CORPORATION | Jan 20, 2017 | EMDE |
| TELEFONAKTIEBOLAGET L M ERICSSON PUBL | Jan 20, 2017 | HOFFMANN EITLE |
| VODAFONE GMBH | Jan 20, 2017 | JOSTARNDT PATENTANWALTS |
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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