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The patent EP2837391 was granted to Shin Etsu Chemical on May 10, 2017. The application was filed on Jul 29, 2014 under application number EP14178879A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| HERCULES | Feb 12, 2018 | HOFFMANN EITLE | WITHDRAWN |
| THE DOW CHEMICAL | Feb 5, 2018 | N&H EMEA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2011516612 |
| DESCRIPTION | JPH04290817 |
| DESCRIPTION | JPS5461282 |
| DESCRIPTION | WO03077827 |
| DESCRIPTION | WO2009129300 |
| OPPOSITION | EP2368544 |
| OPPOSITION | EP2647648 |
| OPPOSITION | JPH04290817 |
| OPPOSITION | US2008260657 |
| OPPOSITION | US2009269403 |
| OPPOSITION | WO2009129300 |
| OPPOSITION | WO2009132208 |
| OPPOSITION | WO2012074042 |
| OPPOSITION | WO2012122279 |
| OPPOSITION | WO2012138529 |
| OPPOSITION | WO2012152440 |
| SEARCH | US2009269403 |
| SEARCH | WO2008138755 |
| SEARCH | WO2010114928 |
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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Mar 23, 2022
Mar 15, 2022
Refund of fees
Appeal
Mar 11, 2022
Mar 11, 2022
Mar 4, 2022
Mar 4, 2022
Mar 4, 2022
Mar 3, 2022
Mar 2, 2022
(Electronic) Receipt
Appeal
Mar 2, 2022
Mar 2, 2022
Withdrawal of an appeal
Appeal
Feb 25, 2022
Feb 23, 2022
(Electronic) Receipt
Appeal
Feb 23, 2022
Feb 23, 2022
Feb 3, 2022
Feb 3, 2022
Feb 3, 2022
Jan 31, 2022
(Electronic) Receipt
Appeal
Jan 31, 2022
Jan 31, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Sep 21, 2021
Sep 21, 2021
Sep 21, 2021
Jul 1, 2021
Jun 30, 2021
May 17, 2021
(Electronic) Receipt
Appeal
May 17, 2021
May 17, 2021
May 11, 2021
May 7, 2021
May 7, 2021
May 7, 2021
May 3, 2021
Sep 9, 2020
Sep 2, 2020
(Electronic) Receipt
Appeal
Sep 2, 2020
Sep 2, 2020
Jul 16, 2020
Feb 13, 2020
Feb 7, 2020
(Electronic) Receipt
Appeal
Feb 7, 2020
Feb 7, 2020
Feb 7, 2020
Feb 7, 2020
Reply to appeal
Appeal
Oct 30, 2019
Oct 30, 2019
Oct 30, 2019
Oct 24, 2019
(Electronic) Receipt
Appeal
Oct 24, 2019
Authorisation
Appeal
Oct 24, 2019
Oct 24, 2019
Oct 7, 2019
Oct 7, 2019
Sep 27, 2019
(Electronic) Receipt
Appeal
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Jul 30, 2019
Jul 25, 2019
(Electronic) Receipt
Appeal
Jul 25, 2019
Jul 25, 2019
Notice of appeal
Appeal
Jul 25, 2019
Processing of an appeal
Appeal
Jul 24, 2019
Jul 4, 2019
Jun 21, 2019
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Means of redress
OPPO
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Nov 19, 2018
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Sep 11, 2018
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Jul 11, 2018
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Jul 5, 2018
Jul 5, 2018
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Claims
OPPO
Jul 5, 2018
Jul 5, 2018
Jul 5, 2018
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Jun 20, 2018
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Jun 15, 2018
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Feb 23, 2018
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Feb 5, 2018
May 11, 2017
Apr 13, 2017
Decision to grant a European patent
Search/Exam
Mar 28, 2017
(Electronic) Receipt
Search/Exam
Mar 28, 2017
Filing of the translations of the claims
Search/Exam
Mar 28, 2017
French translation of claims
Search/Exam
Mar 28, 2017
German translation of the claims
Search/Exam
Mar 28, 2017
Letter accompanying subsequently filed items
Search/Exam
Dec 6, 2016
Dec 6, 2016
Dec 6, 2016
Intention to grant (signatures)
Search/Exam
Dec 6, 2016
Text intended for grant (clean copy)
Search/Exam
Dec 6, 2016
Sep 28, 2016
Examination started
Search/Exam
Jul 5, 2016
Aug 4, 2015
(Electronic) Receipt
Search/Exam
Aug 4, 2015
Letter accompanying subsequently filed items
Search/Exam
Aug 4, 2015
Aug 4, 2015
Reply to Written Opinion prepared by the EPO
Search/Exam
Aug 4, 2015
Reply to Written Opinion prepared by the EPO
Search/Exam
Mar 9, 2015
Mar 4, 2015
Feb 23, 2015
Jan 21, 2015
Notification of forthcoming publication
Search/Exam
Jan 5, 2015
Dec 19, 2014
Dec 19, 2014
European search opinion
Search/Exam
Dec 19, 2014
European search report
Search/Exam
Dec 1, 2014
Search started
Search/Exam
Oct 13, 2014
Oct 1, 2014
Sep 19, 2014
Communication to designated inventor
Search/Exam
Sep 19, 2014
Communication to designated inventor
Search/Exam
Sep 19, 2014
Communication to designated inventor
Search/Exam
Sep 19, 2014
Communication to designated inventor
Search/Exam
Sep 19, 2014
Communication to designated inventor
Search/Exam
Jul 29, 2014
Abstract
Search/Exam
Jul 29, 2014
Jul 29, 2014
Claims
Search/Exam
Jul 29, 2014
Description
Search/Exam
Jul 29, 2014
Designation of inventor
Search/Exam
Jul 29, 2014
Designation of inventor
Search/Exam
Jul 29, 2014
Designation of inventor
Search/Exam
Jul 29, 2014
Designation of inventor
Search/Exam
Jul 29, 2014
Designation of inventor
Search/Exam
Jul 29, 2014
Request for grant of a European patent
Search/Exam