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The patent EP2797901 was granted to DOW on May 10, 2017. The application was filed on Nov 14, 2012 under application number EP12795677A. 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 |
|---|---|---|---|
| AKZO NOBEL | Feb 9, 2018 | AKZO NOBEL CHEMICALS GROUP | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1249440 |
| DESCRIPTION | GB1508460 |
| DESCRIPTION | GB1551127 |
| DESCRIPTION | US2005095189 |
| DESCRIPTION | US2008132725 |
| DESCRIPTION | US2010137642 |
| DESCRIPTION | US4568746 |
| DESCRIPTION | US5851948 |
| DESCRIPTION | US6465601 |
| DESCRIPTION | US6534441 |
| DESCRIPTION | US7053247 |
| DESCRIPTION | WO2006060206 |
| INTERNATIONAL-SEARCH-REPORT | EP0412611 |
| INTERNATIONAL-SEARCH-REPORT | EP0737669 |
| INTERNATIONAL-SEARCH-REPORT | US2010087683 |
| INTERNATIONAL-SEARCH-REPORT | US2010094007 |
| INTERNATIONAL-SEARCH-REPORT | US4973692 |
| INTERNATIONAL-SEARCH-REPORT | US4977266 |
| INTERNATIONAL-SEARCH-REPORT | US5196588 |
| INTERNATIONAL-SEARCH-REPORT | US5256786 |
| INTERNATIONAL-SEARCH-REPORT | US5410086 |
| INTERNATIONAL-SEARCH-REPORT | WO2010042157 |
| OPPOSITION | WO2010042158 |
| OPPOSITION | WO2010042160 |
| OPPOSITION | WO2010042161 |
| OPPOSITION | WO2010042165 |
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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Oct 5, 2018
Oct 5, 2018
Oct 1, 2018
Jul 10, 2018
Jul 2, 2018
Jun 25, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 13, 2018
Jun 13, 2018
Jun 13, 2018
Mar 13, 2018
Mar 13, 2018
Feb 26, 2018
Feb 26, 2018
Feb 21, 2018
Feb 21, 2018
Feb 21, 2018
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Dec 13, 2017
May 11, 2017
Apr 13, 2017
Decision to grant a European patent
Search/Exam
Mar 31, 2017
Mar 31, 2017
Mar 31, 2017
Intention to grant (signatures)
Search/Exam
Mar 31, 2017
Text intended for grant (clean copy)
Search/Exam
Mar 31, 2017
Mar 28, 2017
Mar 10, 2017
(Electronic) Receipt
Search/Exam
Mar 10, 2017
Amended description with annotations
Search/Exam
Mar 10, 2017
Description
Search/Exam
Mar 10, 2017
French translation of claims
Search/Exam
Mar 10, 2017
German translation of the claims
Search/Exam
Mar 10, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 10, 2017
Nov 3, 2016
Nov 3, 2016
Nov 3, 2016
Intention to grant (signatures)
Search/Exam
Nov 3, 2016
Text intended for grant (clean copy)
Search/Exam
Nov 3, 2016
Oct 4, 2016
Sep 29, 2016
Annex to the communication
Search/Exam
Sep 29, 2016
Consultation by telephone/in person
Search/Exam
Sep 29, 2016
Sep 27, 2016
(Electronic) Receipt
Search/Exam
Sep 27, 2016
Amended claims with annotations
Search/Exam
Sep 27, 2016
Amended description with annotations
Search/Exam
Sep 27, 2016
Claims
Search/Exam
Sep 27, 2016
Description
Search/Exam
Sep 27, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 7, 2016
(Electronic) Receipt
Search/Exam
Sep 7, 2016
Amended claims with annotations
Search/Exam
Sep 7, 2016
Amended description with annotations
Search/Exam
Sep 7, 2016
Claims
Search/Exam
Sep 7, 2016
Description
Search/Exam
Sep 7, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 7, 2016
Letter dealing with oral proceedings
Search/Exam
Jul 11, 2016
Advice of delivery
Search/Exam
Jul 6, 2016
Annex to the communication
Search/Exam
Jul 6, 2016
Summons to attend oral proceedings
Search/Exam
Jun 14, 2016
Preparation for oral proceedings
Search/Exam
Feb 25, 2016
(Electronic) Receipt
Search/Exam
Feb 25, 2016
Amended claims with annotations
Search/Exam
Feb 25, 2016
Claims
Search/Exam
Feb 25, 2016
Letter accompanying subsequently filed items
Search/Exam
Feb 25, 2016
Dec 15, 2015
Dec 10, 2015
(Electronic) Receipt
Search/Exam
Dec 10, 2015
Letter accompanying subsequently filed items
Search/Exam
Aug 24, 2015
Annex to the communication
Search/Exam
Aug 24, 2015
Communication from the Examining Division
Search/Exam
Aug 19, 2015
Examination started
Search/Exam
Mar 16, 2015
(Electronic) Receipt
Search/Exam
Mar 16, 2015
(Electronic) Receipt
Search/Exam
Mar 16, 2015
Mar 16, 2015
Amended claims with annotations
Search/Exam
Mar 16, 2015
Amendments received before examination
Search/Exam
Mar 16, 2015
Amendments received before examination
Search/Exam
Mar 16, 2015
Claims
Search/Exam
Mar 16, 2015
Letter accompanying subsequently filed items
Search/Exam
Mar 16, 2015
Letter accompanying subsequently filed items
Search/Exam
Oct 8, 2014
Sep 9, 2014
Aug 6, 2014
Communication to designated inventor
Search/Exam
Jul 16, 2014
(Electronic) Receipt
Search/Exam
Jul 16, 2014
Request for entry into the European phase
Search/Exam
Jul 7, 2014
Jul 7, 2014
May 30, 2014
Notification of the recording of a change
Search/Exam
May 9, 2014
Information on entry into European phase
Search/Exam
Mar 31, 2014
Mar 31, 2014
Mar 31, 2014
Mar 31, 2014
Mar 31, 2014
Mar 19, 2014
CDS Clean up - amended applicant details
Search/Exam
Jan 3, 2014
Written opinion
PCT2
Jan 3, 2014
Jan 3, 2014
Dec 13, 2013
Notification of election of EPO
Search/Exam
Dec 5, 2013
Dec 4, 2013
Nov 27, 2013
Oct 28, 2013
Oct 28, 2013
Oct 28, 2013
Oct 28, 2013
PCT demand form
PCT2
Oct 28, 2013
Oct 28, 2013
Oct 28, 2013
Jul 24, 2013
Jul 4, 2013
Copy of the international search report
Search/Exam
Jul 4, 2013
Published international application - A1
Search/Exam
May 17, 2013
May 17, 2013
May 17, 2013
Feb 13, 2013
Nov 23, 2012
Abstract
PCTISA
Nov 23, 2012
Claims
PCTISA
Nov 23, 2012
Description
PCTISA