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The patent EP3118230 was granted to Kureha on Sep 13, 2017. The application was filed on Feb 26, 2015 under application number EP15760888A. 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 |
|---|---|---|---|
| SOLVAY SPECIALTY POLYMERS ITALY | Jun 13, 2018 | BENVENUTI | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2003040936 |
| INTERNATIONAL-SEARCH-REPORT | JP2010525124 |
| INTERNATIONAL-SEARCH-REPORT | JP2014505134 |
| INTERNATIONAL-SEARCH-REPORT | JPH11130821 |
| INTERNATIONAL-SEARCH-REPORT | JPH11181027 |
| INTERNATIONAL-SEARCH-REPORT | WO2012090876 |
| INTERNATIONAL-SEARCH-REPORT | WO2014002935 |
| OPPOSITION | EP2396848 |
| OPPOSITION | EP2660254 |
| OPPOSITION | EP2935410 |
| OPPOSITION | JP2014047513 |
| OPPOSITION | US6372388 |
| OPPOSITION | US6387570 |
| OPPOSITION | US6824927 |
| OPPOSITION | WO2008129041 |
| OPPOSITION | WO2012175417 |
| OPPOSITION | WO2012175418 |
| OPPOSITION | WO2013120858 |
| SEARCH | EP2660254 |
| SEARCH | WO2014002936 |
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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Means of redress
OPPO
Feb 10, 2020
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Claims
OPPO
Oct 29, 2019
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Description
OPPO
Jan 15, 2019
Jan 15, 2019
Sep 5, 2018
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Aug 20, 2018
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Sep 14, 2017
Aug 18, 2017
Decision to grant a European patent
Search/Exam
Aug 3, 2017
Aug 3, 2017
Jul 27, 2017
(Electronic) Receipt
Search/Exam
Jul 27, 2017
French translation of claims
Search/Exam
Jul 27, 2017
German translation of the claims
Search/Exam
Jul 27, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 27, 2017
Mar 29, 2017
Mar 29, 2017
Mar 29, 2017
Intention to grant (signatures)
Search/Exam
Mar 29, 2017
Text intended for grant (clean copy)
Search/Exam
Mar 29, 2017
Feb 8, 2017
(Electronic) Receipt
Search/Exam
Feb 8, 2017
Feb 8, 2017
Amended claims with annotations
Search/Exam
Feb 8, 2017
Amendments received before examination
Search/Exam
Feb 8, 2017
Letter accompanying subsequently filed items
Search/Exam
Feb 8, 2017
Maintenance of the application
Search/Exam
Dec 21, 2016
Notification of forthcoming publication
Search/Exam
Nov 22, 2016
Nov 3, 2016
Nov 3, 2016
European search opinion
Search/Exam
Nov 3, 2016
Information on Search Strategy
Search/Exam
Nov 3, 2016
Supplementary European search report
Search/Exam
Oct 28, 2016
Oct 27, 2016
Search started
Search/Exam
Oct 26, 2016
Oct 26, 2016
Oct 14, 2016
Communication to designated inventor
Search/Exam
Oct 14, 2016
Communication to designated inventor
Search/Exam
Sep 27, 2016
Sep 27, 2016
Sep 21, 2016
(Electronic) Receipt
Search/Exam
Sep 21, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 21, 2016
Sep 14, 2016
Sep 8, 2016
(Electronic) Receipt
Search/Exam
Sep 8, 2016
Abstract
Search/Exam
Sep 8, 2016
Claims
Search/Exam
Sep 8, 2016
Description
Search/Exam
Sep 8, 2016
Drawings
Search/Exam
Sep 8, 2016
Request for entry into the European phase
Search/Exam
Jul 22, 2016
Information on entry into European phase
Search/Exam
Oct 6, 2015
Sep 17, 2015
Copy of the international search report
Search/Exam
Sep 17, 2015
Sep 17, 2015
International publication pamphlet
Search/Exam