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The patent EP2670524 was granted to Basf on May 10, 2017. The application was filed on Feb 3, 2012 under application number EP12702261A. 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 |
|---|---|---|---|
| BWA WATER ADDITIVES UK | Feb 9, 2018 | APPLEYARD LEES | ADMISSIBLE |
| COATEX | Feb 9, 2018 | REGIMBEAU | ADMISSIBLE |
| NIPPON SHOKUBAI | Feb 5, 2018 | CABINET BEAU DE LOMENIE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP0510831 |
| INTERNATIONAL-SEARCH-REPORT | EP0618240 |
| INTERNATIONAL-SEARCH-REPORT | EP0792890 |
| INTERNATIONAL-SEARCH-REPORT | US5216099 |
| OPPOSITION | AU2012213403 |
| OPPOSITION | EP0405818 |
| OPPOSITION | EP0618240 |
| OPPOSITION | JP2000080396 |
| OPPOSITION | JP2003041089 |
| OPPOSITION | JP2004107474 |
| OPPOSITION | JP2004217899 |
| OPPOSITION | JP2010077340 |
| OPPOSITION | JPH07126504 |
| OPPOSITION | US4681686 |
| OPPOSITION | US5216099 |
| OPPOSITION | WO2012104304 |
| OPPOSITION | WO2012104325 |
| OPPOSITION | WO2012104401 |
| OTHER | JP2010077340 |
| OTHER | US5216099 |
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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(Electronic) Receipt
Appeal
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Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Refund of fees
Appeal
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Jan 27, 2020
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(Electronic) Receipt
Appeal
Jan 23, 2020
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(Electronic) Receipt
Appeal
Jan 22, 2020
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Notice of appeal
Appeal
Jan 10, 2020
Dec 19, 2019
(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
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OPPO
Jul 16, 2019
Claims
OPPO
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OPPO
Jul 16, 2019
Claims
OPPO
Jul 16, 2019
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OPPO
Jul 16, 2019
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OPPO
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May 10, 2017
Apr 13, 2017
Decision to grant a European patent
Search/Exam
Mar 23, 2017
(Electronic) Receipt
Search/Exam
Mar 23, 2017
English translation of the claims
Search/Exam
Mar 23, 2017
French translation of claims
Search/Exam
Mar 23, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 2, 2017
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Intention to grant (signatures)
Search/Exam
Dec 21, 2016
Text intended for grant (clean copy)
Search/Exam
Dec 21, 2016
Jul 20, 2016
Amended description with annotations
Search/Exam
Jul 20, 2016
Description
Search/Exam
Jul 20, 2016
May 6, 2016
Annex to the communication
Search/Exam
May 6, 2016
Communication from the Examining Division
Search/Exam
Mar 3, 2016
CDS Clean up - amended applicant details
Search/Exam
Mar 3, 2016
Jan 21, 2015
Amended claims with annotations
Search/Exam
Jan 21, 2015
Claims
Search/Exam
Jan 21, 2015
Nov 25, 2014
Nov 19, 2014
Jul 14, 2014
Annex to the communication
Search/Exam
Jul 14, 2014
Communication from the Examining Division
Search/Exam
Jul 7, 2014
Examination started
Search/Exam
Mar 13, 2014
Mar 13, 2014
Mar 7, 2014
(Electronic) Receipt
Search/Exam
Mar 7, 2014
Letter accompanying subsequently filed items
Search/Exam
Mar 7, 2014
Observations by third parties
Search/Exam
Mar 7, 2014
Observations by third parties
Search/Exam
Mar 7, 2014
Patent document filed by a Third party
Search/Exam
Mar 7, 2014
Patent document filed by a Third party
Search/Exam
Mar 7, 2014
Patent document filed by a Third party
Search/Exam
Jan 28, 2014
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Reply to Written Opinion prepared by the EPO
Search/Exam
Jan 13, 2014
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Nov 13, 2013
Sep 20, 2013
Sep 18, 2013
Communication to designated inventor
Search/Exam
Sep 18, 2013
Communication to designated inventor
Search/Exam
Sep 18, 2013
Communication to designated inventor
Search/Exam
Sep 18, 2013
Communication to designated inventor
Search/Exam
Sep 3, 2013
(Electronic) Receipt
Search/Exam
Sep 3, 2013
Request for entry into the European phase
Search/Exam
Jun 14, 2013
Information on entry into European phase
Search/Exam
Mar 12, 2013
Written opinion
PCT2
Mar 12, 2013
Mar 12, 2013
Feb 26, 2013
Notification of election of EPO
Search/Exam
Dec 12, 2012
Dec 12, 2012
Dec 4, 2012
PCT demand form
PCT2
Dec 4, 2012
Dec 4, 2012
Dec 4, 2012
Aug 29, 2012
Aug 9, 2012
Copy of the international search report
Search/Exam
Aug 9, 2012
Copy of the international search report
Search/Exam
Aug 9, 2012
Published international application - A1
Search/Exam
May 31, 2012
May 31, 2012
May 31, 2012
Feb 3, 2012
(Electronic) Receipt
PCTRO
Feb 3, 2012
Abstract
PCTRO
Feb 3, 2012
Claims
PCTRO
Feb 3, 2012
Description
PCTRO
Feb 3, 2012