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The patent EP2996794 was granted to Evonik Fibres on Sep 26, 2018. The application was filed on Apr 28, 2014 under application number EP14719763A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| HAFFMANS | Jun 26, 2019 | VIERING | ADMISSIBLE |
| LAIR LIQUIDE | Jun 24, 2019 | AIR LIQUIDE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1324815 |
| DESCRIPTION | US4806132 |
| DESCRIPTION | US5281253 |
| DESCRIPTION | US6168649 |
| DESCRIPTION | US6565626 |
| DESCRIPTION | WO2011009919 |
| DESCRIPTION | WO2012000727 |
| INTERNATIONAL-SEARCH-REPORT | US2007125537 |
| INTERNATIONAL-SEARCH-REPORT | WO2012000727 |
| OPPOSITION | EP2996794 |
| OPPOSITION | FR2757081 |
| OPPOSITION | FR2898065 |
| OPPOSITION | US2007125537 |
| OPPOSITION | US2009044701 |
| OPPOSITION | US2010313750 |
| OPPOSITION | US5053058 |
| OPPOSITION | US5281253 |
| OPPOSITION | US6482251 |
| OPPOSITION | WO2012000727 |
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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Communication to designated inventor
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Request for entry into the European phase
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Published international application - A1
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Abstract
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