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The patent EP2826897 was granted to Ewald Drken on May 29, 2019. The application was filed on Jul 7, 2014 under application number EP14002316A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| CARL FREUDENBERG | Feb 27, 2020 | BANSE & STEGLICH PATENTANWALTE PARTMBB | WITHDRAWN |
| BASF | Feb 26, 2020 | MAIWALD | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US4282076 |
| DESCRIPTION | US5064802 |
| DESCRIPTION | US5374696 |
| DESCRIPTION | US5723217 |
| EXAMINATION | EP0705923 |
| EXAMINATION | US2004038612 |
| OPPOSITION | DE102013011703 |
| OPPOSITION | DE102013014918 |
| OPPOSITION | EP2343406 |
| OPPOSITION | US2010047571 |
| OPPOSITION | US6074590 |
| OPPOSITION | WO2004014998 |
| OPPOSITION | WO2004018746 |
| OPPOSITION | WO2009111185 |
| OPPOSITION | WO2012091806 |
| SEARCH | EP2261410 |
| SEARCH | EP2343406 |
| SEARCH | JP2003138420 |
| SEARCH | WO2009111185 |
| SEARCH | WO2009142315 |
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.
Date
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Jun 11, 2019
May 3, 2019
Decision to grant a European patent
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Apr 15, 2019
(Electronic) Receipt
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Apr 15, 2019
English translation of the claims
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Apr 15, 2019
Filing of the translations of the claims
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Apr 15, 2019
French translation of claims
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Apr 15, 2019
Letter accompanying subsequently filed items
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Feb 25, 2019
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Intention to grant (signatures)
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Feb 25, 2019
Text intended for grant (clean copy)
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Feb 25, 2019
Feb 14, 2019
Nov 30, 2018
(Electronic) Receipt
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Nov 30, 2018
Amended claims with annotations
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Nov 30, 2018
Amended description with annotations
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Nov 30, 2018
Claims
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Nov 30, 2018
Description
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Nov 30, 2018
Letter accompanying subsequently filed items
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Nov 30, 2018
Oct 24, 2018
Annex to the communication
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Oct 24, 2018
Communication from the Examining Division
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Jul 11, 2018
(Electronic) Receipt
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Jul 11, 2018
Amended claims with annotations
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Amended claims with annotations
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Amended description with annotations
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Jul 11, 2018
Claims
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Claims
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Jul 11, 2018
Description
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Jul 11, 2018
Letter accompanying subsequently filed items
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Jul 11, 2018
May 2, 2018
Annex to the communication
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May 2, 2018
Communication from the Examining Division
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Apr 23, 2018
Examination started
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Jul 20, 2017
Payment of fees and costs
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Jul 20, 2017
Payment of fees and costs
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Jul 21, 2016
Payment of fees and costs
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Jul 21, 2016
Payment of fees and costs
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Priority search results
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Aug 6, 2015
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Amended claims with annotations
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Amended description with annotations
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Jul 22, 2015
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Amended claims with annotations
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Amended description with annotations
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Jul 20, 2015
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Jul 15, 2015
Letter concerning fees and payments
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Jul 15, 2015
Payment of fees and costs
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Jan 26, 2015
Jan 5, 2015
Notification of forthcoming publication
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Dec 3, 2014
Dec 3, 2014
Dec 3, 2014
European search opinion
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Dec 3, 2014
European search report
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Nov 10, 2014
Search started
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Sep 26, 2014
Communication to designated inventor
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Sep 26, 2014
Communication to designated inventor
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Aug 18, 2014
Submission concerning representation
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Aug 4, 2014
Designation of inventor
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Aug 4, 2014
Letter concerning the inventor
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Aug 4, 2014
Payment of fees and costs
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Aug 4, 2014
Payment of fees and costs
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Jul 29, 2014
Letter concerning the priority
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Jul 29, 2014
Priority document
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Jul 29, 2014
Priority document
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Jul 7, 2014
Abstract
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Jul 7, 2014
Claims
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Jul 7, 2014
Description
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Jul 7, 2014
Drawings
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Jul 7, 2014
Request for grant of a European patent
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