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The patent EP2012843 was granted to Evonik Degussa on Oct 27, 2021. The application was filed on Apr 20, 2007 under application number EP07724412A. 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 |
|---|---|---|---|
| NIPPON SHOKUBAI | Jul 25, 2022 | HOFFMANN EITLE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE19909653 |
| INTERNATIONAL-SEARCH-REPORT | EP1616581 |
| INTERNATIONAL-SEARCH-REPORT | US5973042 |
| INTERNATIONAL-SEARCH-REPORT | WO2004037903 |
| INTERNATIONAL-SEARCH-REPORT | WO2006111402 |
| OPPOSITION | DE102005018922 |
| OPPOSITION | DE102005018923 |
| OPPOSITION | DE102005018924 |
| OPPOSITION | DE102006019157 |
| OPPOSITION | DE102006037983 |
| OPPOSITION | JPH0665656B |
| OPPOSITION | US2004071966 |
| OPPOSITION | US6620889 |
| OPPOSITION | WO2005108472 |
| OPPOSITION | WO2006111402 |
| OPPOSITION | WO2006111403 |
| OPPOSITION | WO2006111404 |
| OTHER | DE102006019157 |
| OTHER | DE102006037983 |
| OTHER | US6605673 |
| OTHER | WO2006111402 |
| OTHER | WO2006111403 |
| OTHER | WO2006111404 |
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
Description
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Jun 3, 2025
Jun 3, 2025
Apr 4, 2025
Mar 10, 2025
General authorisation
Search/Exam
Mar 10, 2025
Letter accompanying subsequently filed items
Search/Exam
Mar 10, 2025
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Feb 28, 2025
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Means of redress
Search/Exam
Feb 28, 2025
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Nov 9, 2021
Nov 2, 2021
Oct 25, 2021
(Electronic) Receipt
Search/Exam
Oct 25, 2021
Annexes in respect of a client data request
Search/Exam
Oct 25, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 25, 2021
Sep 30, 2021
Decision to grant a European patent
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Sep 17, 2021
(Electronic) Receipt
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Sep 17, 2021
English translation of the claims
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Sep 17, 2021
Filing of the translations of the claims
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Sep 17, 2021
French translation of claims
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Sep 17, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 18, 2021
Jun 18, 2021
Jun 18, 2021
Intention to grant (signatures)
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Jun 18, 2021
Text intended for grant (clean copy)
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Jun 18, 2021
Feb 19, 2021
(Electronic) Receipt
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Feb 19, 2021
Amended description with annotations
Search/Exam
Feb 19, 2021
Description
Search/Exam
Feb 19, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 19, 2021
Dec 17, 2020
Annex to the communication
Search/Exam
Dec 17, 2020
Communication from the Examining Division
Search/Exam
Mar 23, 2020
(Electronic) Receipt
Search/Exam
Mar 23, 2020
Amended description with annotations
Search/Exam
Mar 23, 2020
Description
Search/Exam
Mar 23, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 23, 2020
Jan 3, 2020
Annex to the communication
Search/Exam
Jan 3, 2020
Communication from the Examining Division
Search/Exam
Nov 12, 2019
Nov 6, 2019
Nov 6, 2019
Aug 16, 2019
Aug 9, 2019
(Electronic) Receipt
Search/Exam
Aug 9, 2019
Authorisation
Search/Exam
Aug 9, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 9, 2019
Apr 9, 2019
(Electronic) Receipt
Search/Exam
Apr 9, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 9, 2019
Mar 13, 2019
Annex to the communication
Search/Exam
Mar 13, 2019
Communication from the Examining Division
Search/Exam
Jan 16, 2019
(Electronic) Receipt
Search/Exam
Jan 16, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 16, 2019
Matter concerning the application
Search/Exam
Jan 9, 2019
Refund of fees
Search/Exam
Jan 8, 2019
Advice of delivery
Appeal
Jan 2, 2019
Advice of delivery
Appeal
Dec 21, 2018
Decision of the Board of Appeal
Search/Exam
Dec 21, 2018
Dec 21, 2018
F3032 Notification(s) of the decision
Search/Exam
Dec 21, 2018
Nov 23, 2018
Nov 23, 2018
Oct 11, 2018
(Electronic) Receipt
Appeal
Oct 11, 2018
Claims
Appeal
Oct 11, 2018
Claims
Appeal
Oct 11, 2018
Claims
Appeal
Oct 11, 2018
Claims
Appeal
Oct 11, 2018
Oct 11, 2018
Jun 19, 2018
Mar 7, 2018
Advice of delivery
Appeal
Mar 7, 2018
Advice of delivery
Appeal
Mar 2, 2018
Feb 27, 2018
Nov 23, 2017
Advice of delivery
Appeal
Nov 22, 2017
Advice of delivery
Appeal
Nov 17, 2017
Nov 14, 2017
Aug 5, 2016
May 18, 2016
Dec 5, 2014
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Nov 3, 2014
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Processing of an appeal
Appeal
May 9, 2014
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Apr 11, 2014
Claims
Appeal
Apr 11, 2014
Claims
Appeal
Apr 11, 2014
Claims
Appeal
Apr 11, 2014
Claims
Appeal
Apr 11, 2014
Claims
Appeal
Apr 11, 2014
Claims
Appeal
Apr 11, 2014
Apr 8, 2014
Claims
Appeal
Apr 8, 2014
Claims
Appeal
Apr 8, 2014
Claims
Appeal
Apr 8, 2014
Claims
Appeal
Apr 8, 2014
Claims
Appeal
Apr 8, 2014
Claims
Appeal
Apr 8, 2014
Apr 2, 2014
Apr 2, 2014
Jan 24, 2014
Notice of appeal
Appeal
Jan 23, 2014
Notice of appeal
Appeal
Dec 5, 2013
Advice of delivery
Search/Exam
Dec 2, 2013
Advice of delivery
Search/Exam
Nov 29, 2013
Acknowledgement of a document
Search/Exam
Nov 29, 2013
Annex to a communication
Search/Exam
Nov 29, 2013
Nov 29, 2013
Nov 29, 2013
Grounds for the decision (Annex)
Search/Exam
Nov 29, 2013
Means of redress
Search/Exam
Oct 28, 2013
Oct 23, 2013
Oct 7, 2013
(Electronic) Receipt
Search/Exam
Oct 7, 2013
Amended claims with annotations
Search/Exam
Oct 7, 2013
Amended claims with annotations
Search/Exam
Oct 7, 2013
Letter accompanying subsequently filed items
Search/Exam
Oct 7, 2013
Jul 18, 2013
Advice of delivery
Search/Exam
Jul 17, 2013
Advice of delivery
Search/Exam
Jul 16, 2013
Acknowledgement of a document
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Jul 16, 2013
Annex to the communication
Search/Exam
Jul 16, 2013
Summons to attend oral proceedings
Search/Exam
Jul 10, 2013
Preparation for oral proceedings
Search/Exam
Sep 12, 2012
Sep 6, 2012
Annexes in respect of a client data request
Search/Exam
Sep 1, 2012
Jul 6, 2011
Claims
Search/Exam
Jul 6, 2011
Jul 4, 2011
Claims
Search/Exam
Jul 4, 2011
Apr 20, 2011
Apr 15, 2011
(Electronic) Receipt
Search/Exam
Apr 15, 2011
Letter accompanying subsequently filed items
Search/Exam
Apr 15, 2011
Dec 23, 2010
Annex to the communication
Search/Exam
Dec 23, 2010
Communication from the Examining Division
Search/Exam
May 11, 2009
Refund of fees
Search/Exam
Apr 27, 2009
Apr 20, 2009
Mar 31, 2009
Mar 23, 2009
Mar 12, 2009
Feb 27, 2009
Letter concerning the inventor
Search/Exam
Feb 27, 2009
Letter concerning the inventor
Search/Exam
Feb 26, 2009
Copy of the international search report
Search/Exam
Feb 26, 2009
Copy of the international search report
Search/Exam
Feb 26, 2009
Jan 27, 2009
Jan 27, 2009
Jan 27, 2009
Dec 17, 2008
Dec 10, 2008
Letter which had not been notified
Search/Exam
Dec 9, 2008
Letter which had not been notified
Search/Exam
Nov 28, 2008
Nov 27, 2008
Nov 5, 2008
Request for entry into the European phase
Search/Exam
Oct 30, 2008
Claims
Search/Exam
Oct 30, 2008
Claims
Search/Exam
Oct 30, 2008
Fax request to enter the European phase
Search/Exam
Oct 30, 2008
Letter accompanying subsequently filed items
Search/Exam
Oct 30, 2008
Payment of fees and costs
Search/Exam
Oct 30, 2008
Request for correction
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Sep 5, 2008
Information on entry into European phase
Search/Exam
Sep 1, 2008
Sep 1, 2008
Sep 1, 2008
Notification of the recording of a change
Search/Exam
May 27, 2008
May 27, 2008
May 27, 2008
May 27, 2008
May 27, 2008
Nov 1, 2007
Published international application - A2
Search/Exam
Apr 24, 2007
Abstract
PCTRO
Apr 24, 2007
Claims
PCTRO
Apr 24, 2007
Description
PCTRO
Apr 24, 2007