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The patent EP2670523 was granted to Basf on May 3, 2017. The application was filed on Feb 1, 2012 under application number EP12701528A. 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 2, 2018 | APPLEYARD LEES | - |
| COATEX | Feb 2, 2018 | REGIMBEAU | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP1074293 |
| INTERNATIONAL-SEARCH-REPORT | EP2182011 |
| INTERNATIONAL-SEARCH-REPORT | US5681479 |
| INTERNATIONAL-SEARCH-REPORT | WO2009133186 |
| INTERNATIONAL-SEARCH-REPORT | WO2011054789 |
| OPPOSITION | EP0405818 |
| OPPOSITION | EP0618240 |
| OPPOSITION | JP2004217899 |
| OPPOSITION | JP2010077340 |
| OPPOSITION | US4681686 |
| OPPOSITION | WO2012104401 |
| OTHER | JP2010007340 |
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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May 3, 2017
Apr 6, 2017
Decision to grant a European patent
Search/Exam
Mar 10, 2017
(Electronic) Receipt
Search/Exam
Mar 10, 2017
English translation of the claims
Search/Exam
Mar 10, 2017
French translation of claims
Search/Exam
Mar 10, 2017
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
Nov 22, 2016
Text intended for grant (clean copy)
Search/Exam
Nov 22, 2016
Sep 21, 2016
(Electronic) Receipt
Search/Exam
Sep 21, 2016
Amended description with annotations
Search/Exam
Sep 21, 2016
Description
Search/Exam
Sep 21, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 21, 2016
May 17, 2016
Annex to the communication
Search/Exam
May 17, 2016
Communication from the Examining Division
Search/Exam
Mar 3, 2016
CDS Clean up - amended applicant details
Search/Exam
Mar 3, 2016
Mar 27, 2015
Amended claims with annotations
Search/Exam
Mar 27, 2015
Claims
Search/Exam
Mar 27, 2015
Feb 19, 2015
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Request for extension of time limit
Search/Exam
Oct 3, 2014
Annex to a communication
Search/Exam
Oct 3, 2014
Annex to the communication
Search/Exam
Oct 3, 2014
Communication from the Examining Division
Search/Exam
Sep 24, 2014
Examination started
Search/Exam
Mar 27, 2014
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Mar 20, 2014
(Electronic) Receipt
Search/Exam
Mar 20, 2014
Letter accompanying subsequently filed items
Search/Exam
Mar 20, 2014
Observations by third parties
Search/Exam
Mar 20, 2014
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Search/Exam
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Patent document filed by a Third party
Search/Exam
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Patent document filed by a Third party
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Patent document filed by a Third party
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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(Electronic) Receipt
Search/Exam
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Request for entry into the European phase
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Information on entry into European phase
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Mar 11, 2013
Written opinion
PCT2
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Notification of election of EPO
Search/Exam
Jan 25, 2013
Free text
PCT2
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PCT demand form
PCT2
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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
Jun 5, 2012
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Feb 1, 2012
(Electronic) Receipt
PCTRO
Feb 1, 2012
Abstract
PCTRO
Feb 1, 2012
Claims
PCTRO
Feb 1, 2012
Description
PCTRO
Feb 1, 2012