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The patent EP2227491 was granted to DOW on Feb 20, 2019. The application was filed on Dec 18, 2008 under application number EP08865935A. 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 |
|---|---|---|---|
| TOTAL RESEARCH & TECHNOLOGY FELUY | Nov 20, 2019 | GARCIA MARTIN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0757076 |
| DESCRIPTION | US2007276111 |
| DESCRIPTION | WO2007024746 |
| DESCRIPTION | WO2007117520 |
| INTERNATIONAL-SEARCH-REPORT | US2007112160 |
| INTERNATIONAL-SEARCH-REPORT | US2007213205 |
| INTERNATIONAL-SEARCH-REPORT | US2007275219 |
| INTERNATIONAL-SEARCH-REPORT | US2007276111 |
| OPPOSITION | US6828395 |
| OPPOSITION | WO2004101674 |
| OPPOSITION | WO2006138084 |
| OPPOSITION | WO2007024746 |
| OPPOSITION | WO2007117520 |
| SEARCH | US2007276111 |
| SEARCH | US6194520 |
| SEARCH | WO2007024746 |
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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Submission concerning representation
Search/Exam
Mar 11, 2019
Submission concerning representation
Search/Exam
Mar 4, 2019
Jan 24, 2019
Decision to grant a European patent
Search/Exam
Jan 2, 2019
(Electronic) Receipt
Search/Exam
Jan 2, 2019
Filing of the translations of the claims
Search/Exam
Jan 2, 2019
French translation of claims
Search/Exam
Jan 2, 2019
German translation of the claims
Search/Exam
Jan 2, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 30, 2018
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Aug 30, 2018
Intention to grant (signatures)
Search/Exam
Aug 30, 2018
Text intended for grant (clean copy)
Search/Exam
Aug 30, 2018
Jul 17, 2018
(Electronic) Receipt
Search/Exam
Jul 17, 2018
Amended claims with annotations
Search/Exam
Jul 17, 2018
Claims
Search/Exam
Jul 17, 2018
Letter accompanying subsequently filed items
Search/Exam
Jul 17, 2018
Jul 3, 2018
Submission concerning representation
Search/Exam
Mar 12, 2018
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Intention to grant (signatures)
Search/Exam
Mar 12, 2018
Text intended for grant (clean copy)
Search/Exam
Mar 12, 2018
Dec 21, 2017
Dec 18, 2017
Nov 15, 2017
(Electronic) Receipt
Search/Exam
Nov 15, 2017
Amended claims with annotations
Search/Exam
Nov 15, 2017
Amended description with annotations
Search/Exam
Nov 15, 2017
Claims
Search/Exam
Nov 15, 2017
Description
Search/Exam
Nov 15, 2017
Letter accompanying subsequently filed items
Search/Exam
Nov 15, 2017
Jul 5, 2017
Annex to the communication
Search/Exam
Jul 5, 2017
Communication from the Examining Division
Search/Exam
Oct 17, 2016
(Electronic) Receipt
Search/Exam
Oct 17, 2016
Amended claims with annotations
Search/Exam
Oct 17, 2016
Claims
Search/Exam
Oct 17, 2016
Letter accompanying subsequently filed items
Search/Exam
Oct 17, 2016
Jun 6, 2016
Annex to the communication
Search/Exam
Jun 6, 2016
Communication from the Examining Division
Search/Exam
May 30, 2016
Examination started
Search/Exam
Dec 5, 2013
Nov 8, 2013
Nov 6, 2013
Jan 16, 2012
(Electronic) Receipt
Search/Exam
Jan 16, 2012
Jan 16, 2012
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Amendments received before examination
Search/Exam
Jan 16, 2012
Letter accompanying subsequently filed items
Search/Exam
Jul 4, 2011
Jun 15, 2011
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European search opinion
Search/Exam
Jun 15, 2011
Supplementary European search report
Search/Exam
Mar 16, 2011
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Aug 18, 2010
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Jul 23, 2010
Jul 19, 2010
Jul 12, 2010
Matter concerning the application
Search/Exam
Jul 12, 2010
Request for entry into the European phase
Search/Exam
Jul 2, 2010
Matter concerning the application
Search/Exam
Jun 30, 2010
Submission concerning representation
Search/Exam
Jun 28, 2010
Letter accompanying subsequently filed items
Search/Exam
Jun 28, 2010
Letter accompanying subsequently filed items
Search/Exam
Jun 28, 2010
Matter concerning the application
Search/Exam
Jun 28, 2010
Request for entry into the European phase
Search/Exam
May 18, 2010
Information on entry into European phase
Search/Exam
Aug 3, 2009
Jul 9, 2009
Copy of the international search report
Search/Exam
Jul 9, 2009
Jul 9, 2009
Published international application - A1
Search/Exam