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The patent EP2684744 was granted to Wiegand on May 2, 2018. The application was filed on Jul 9, 2013 under application number EP13175728A. The patent is currently recorded with a legal status of "Revoked".

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 | Opposition Status |
|---|---|---|---|
| DURA AUTOMOTIVE SYSTEMS | Feb 1, 2019 | BTB BUNGARTZ BALTZER PARTNERSCHAFT MBB PATENTANWALTE | ADMISSIBLE |
| LEONHARD KURZ STIFTUNG | Feb 1, 2019 | LOUIS POHLAU LOHRENTZ | ADMISSIBLE |
| SAMVARDHANA MOTHERSON INNOVATIVE AUTOSYSTEMS | Feb 1, 2019 | ISARPATENT | ADMISSIBLE |
| KRAUSSMAFFEI | Jan 31, 2019 | WILHELM | ADMISSIBLE |
| NEMETZADE | Jan 30, 2019 | HENKEL & PARTNER MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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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