Patent No. EP1956813 (titled "Locking The Keyboard By A Joy Stick") was filed by III 3 on Jun 15, 2001. The application was issued on Apr 13, 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 |
|---|---|---|
| TELEKOM DEUTSCHLAND | Jan 10, 2017 | BRAUN DULLAEUS PANNEN EMMERLING PATENT & RECHTSANWALTSPARTNERSCHAFT MBB |
| ZTE DEUTSCHLAND | Oct 28, 2016 | FAHNDRICH |
| Oct 27, 2016 | SCHROER | |
| HUAWEI TECHNOLOGIES DUESSELDORF GMBH | Oct 27, 2016 | PRUFER & PARTNER MBB PATENTANWALTE RECHTSANWALTE |
| TELEFÓNICA GERMANY GMBH & CO. OHG | Oct 27, 2016 | HERRMANN |
| VODAFONE GMBH | Oct 27, 2016 | MAIKOWSKI & NINNEMANN PATENTANWALTE PARTNERSCHAFT 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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