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The patent EP2957284 was granted to E I DU Pont DE Nemours on Jan 17, 2018. The application was filed on Jun 26, 2008 under application number EP15178198A. 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 |
|---|---|---|---|
| INTERVET | Oct 17, 2018 | - | WITHDRAWN |
| NISSAN CHEMICAL | Oct 17, 2018 | HOFFMANN EITLE | WITHDRAWN |
| VIRBAC | Oct 17, 2018 | LAVOIX | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2005182059 |
| DESCRIPTION | US3950360 |
| DESCRIPTION | US3984564 |
| DESCRIPTION | US4199569 |
| DESCRIPTION | US4310519 |
| DESCRIPTION | US431857 |
| DESCRIPTION | US4582918 |
| DESCRIPTION | US4743700 |
| DESCRIPTION | US4820695 |
| DESCRIPTION | US4876352 |
| DESCRIPTION | US4916154 |
| DESCRIPTION | US4973750 |
| DESCRIPTION | US5089480 |
| DESCRIPTION | US5105009 |
| DESCRIPTION | US5227494 |
| DESCRIPTION | US5288710 |
| DESCRIPTION | US5352832 |
| DESCRIPTION | US5382673 |
| DESCRIPTION | US5399717 |
| DESCRIPTION | US5567844 |
| DESCRIPTION | US5663361 |
| DESCRIPTION | US5958888 |
| DESCRIPTION | US6054434 |
| DESCRIPTION | US623912 |
| DESCRIPTION | US6270768 |
| DESCRIPTION | US6271255 |
| DESCRIPTION | US6339063 |
| DESCRIPTION | US6437151 |
| DESCRIPTION | US6472371 |
| DESCRIPTION | US6514945 |
| DESCRIPTION | US6825327 |
| DESCRIPTION | US7041670 |
| DESCRIPTION | US7153842 |
| DESCRIPTION | US7312248 |
| DESCRIPTION | US7361689 |
| DESCRIPTION | WO03024222 |
| DESCRIPTION | WO2005085216 |
| DESCRIPTION | WO2006135648 |
| OPPOSITION | EP2182945 |
| OPPOSITION | EP2957284 |
| OPPOSITION | US2004069235 |
| OPPOSITION | US2007066617 |
| OPPOSITION | WO0111963 |
| OPPOSITION | WO2006079162 |
| OPPOSITION | WO2007070606 |
| OPPOSITION | WO2009003075 |
| OPPOSITION | WO2009024541 |
| SEARCH | EP1731512 |
| SEARCH | US2007066617 |
| SEARCH | US3879532 |
| SEARCH | WO2007070606 |
| SEARCH | WO2009024541 |
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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Description
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Mar 22, 2023
Refund of fees
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Annex to the communication
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Communication from the Examining Division
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Mar 15, 2017
Examination started
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Authorisation
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Notification of forthcoming publication
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Refund of fees
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European search opinion
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European search report
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Abstract
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Claims
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Description
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Designation of inventor
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Matter concerning the application
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Request for grant of a European patent
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