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The patent EP2933297 was granted to Dainichiseika Color & Chemicals MFG on May 10, 2017. The application was filed on Nov 26, 2013 under application number EP13861853A. 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 |
|---|---|---|---|
| SPECHT | Feb 7, 2018 | MULLER BORE & PARTNER PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2007270089 |
| DESCRIPTION | JP2008298967 |
| DESCRIPTION | JP2011068865 |
| DESCRIPTION | JPH09176511 |
| INTERNATIONAL-SEARCH-REPORT | JP2006273974 |
| INTERNATIONAL-SEARCH-REPORT | JP2009024165 |
| INTERNATIONAL-SEARCH-REPORT | JP2009227839 |
| INTERNATIONAL-SEARCH-REPORT | JP2010095591 |
| INTERNATIONAL-SEARCH-REPORT | JP2011241259 |
| INTERNATIONAL-SEARCH-REPORT | WO2010013651 |
| OPPOSITION | EP2559715 |
| OPPOSITION | EP2789635 |
| OPPOSITION | JP2002155229 |
| OPPOSITION | JP2003238837 |
| OPPOSITION | JP2011245670 |
| OPPOSITION | JP2012036251 |
| OPPOSITION | JP2012098381 |
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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Decision to grant a European patent
Search/Exam
Apr 11, 2017
Apr 7, 2017
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(Electronic) Receipt
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Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Mar 31, 2017
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Feb 21, 2017
Text intended for grant (clean copy)
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Examination started
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Sep 8, 2016
Matter concerning the application
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European search opinion
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Information on Search Strategy
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Supplementary European search report
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Search started
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Sep 23, 2015
Notification of forthcoming publication
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Aug 4, 2015
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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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(Electronic) Receipt
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Abstract
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Claims
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Description
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May 4, 2015
Request for entry into the European phase
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Apr 24, 2015
Information on entry into European phase
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Copy of the international search report
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International publication pamphlet
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