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The patent EP3112398 was granted to Mitsui Chemicals on Aug 21, 2019. The application was originally filed on Feb 4, 2015 under application number EP15755722A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | WO2007094378 |
| INTERNATIONAL-SEARCH-REPORT | WO2008152935 |
| INTERNATIONAL-SEARCH-REPORT | WO9007526 |
| OPPOSITION | EP1229076 |
| OPPOSITION | EP1930350 |
| OPPOSITION | US2009249645 |
| OPPOSITION | WO2014000230 |
| SEARCH | EP2077283 |
| SEARCH | WO9849211 |
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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May 16, 2024
May 16, 2024
May 16, 2024
Mar 6, 2024
Mar 6, 2024
Mar 6, 2024
Feb 6, 2024
Feb 2, 2024
Feb 1, 2024
(Electronic) Receipt
Appeal
Feb 1, 2024
(Electronic) Receipt
Appeal
Feb 1, 2024
Feb 1, 2024
Feb 1, 2024
Jan 30, 2024
(Electronic) Receipt
Appeal
Jan 30, 2024
Jan 30, 2024
Nov 23, 2023
Nov 23, 2023
Jul 11, 2023
Jul 6, 2023
(Electronic) Receipt
Appeal
Jul 6, 2023
Jul 6, 2023
May 31, 2023
May 31, 2023
May 26, 2023
Mar 31, 2023
Mar 31, 2023
Mar 30, 2023
Mar 27, 2023
(Electronic) Receipt
Appeal
Mar 27, 2023
Mar 27, 2023
Mar 23, 2023
Mar 23, 2023
Mar 23, 2023
Jan 20, 2023
Jan 18, 2023
(Electronic) Receipt
Appeal
Jan 18, 2023
Jan 18, 2023
Jan 18, 2023
Oct 7, 2022
Sep 23, 2022
Sep 21, 2022
(Electronic) Receipt
Appeal
Sep 21, 2022
Sep 21, 2022
Reply to appeal
Appeal
May 25, 2022
Apr 27, 2022
(Electronic) Receipt
Appeal
Apr 27, 2022
Apr 27, 2022
Mar 21, 2022
Mar 21, 2022
Mar 14, 2022
(Electronic) Receipt
Appeal
Mar 14, 2022
Mar 14, 2022
Mar 11, 2022
Mar 11, 2022
Feb 24, 2022
(Electronic) Receipt
Appeal
Feb 24, 2022
Feb 24, 2022
Notice of appeal
Appeal
Feb 24, 2022
Dec 21, 2021
Dec 20, 2021
Dec 17, 2021
Dec 17, 2021
Dec 17, 2021
Dec 17, 2021
Dec 17, 2021
Dec 17, 2021
Means of redress
OPPO
Dec 17, 2021
Dec 17, 2021
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Dec 17, 2021
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Sep 20, 2021
Sep 20, 2021
Sep 15, 2021
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Sep 9, 2021
Sep 9, 2021
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Sep 7, 2021
Sep 7, 2021
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Sep 7, 2021
Aug 17, 2021
Aug 12, 2021
Aug 12, 2021
Aug 12, 2021
Aug 12, 2021
Aug 12, 2021
Aug 12, 2021
Aug 12, 2021
Aug 12, 2021
Jul 9, 2021
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Nov 23, 2020
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Oct 29, 2020
Oct 26, 2020
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Oct 26, 2020
Jun 18, 2020
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Jun 9, 2020
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Jun 2, 2020
May 20, 2020
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May 20, 2020
May 20, 2020
May 20, 2020
May 20, 2020
Sep 2, 2019
Jul 25, 2019
Decision to grant a European patent
Search/Exam
Jul 11, 2019
(Electronic) Receipt
Search/Exam
Jul 11, 2019
Filing of the translations of the claims
Search/Exam
Jul 11, 2019
French translation of claims
Search/Exam
Jul 11, 2019
German translation of the claims
Search/Exam
Jul 11, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 4, 2019
Mar 4, 2019
Mar 4, 2019
Intention to grant (signatures)
Search/Exam
Mar 4, 2019
Text intended for grant (clean copy)
Search/Exam
Mar 4, 2019
Feb 13, 2019
Examination started
Search/Exam
Apr 20, 2018
Apr 20, 2018
Amended claims with annotations
Search/Exam
Apr 20, 2018
Apr 20, 2018
Amended description with annotations
Search/Exam
Apr 20, 2018
Amendments received before examination
Search/Exam
Oct 12, 2017
Sep 25, 2017
Sep 25, 2017
European search opinion
Search/Exam
Sep 25, 2017
Information on Search Strategy
Search/Exam
Sep 25, 2017
Supplementary European search report
Search/Exam
Sep 13, 2017
Search started
Search/Exam
Dec 7, 2016
Notification of forthcoming publication
Search/Exam
Oct 6, 2016
Oct 4, 2016
Communication to designated inventor
Search/Exam
Oct 4, 2016
Communication to designated inventor
Search/Exam
Oct 4, 2016
Communication to designated inventor
Search/Exam
Sep 19, 2016
Sep 19, 2016
Apr 22, 2016
Information regarding early processing
Search/Exam
Apr 12, 2016
(Electronic) Receipt
Search/Exam
Apr 12, 2016
Abstract
Search/Exam
Apr 12, 2016
Claims
Search/Exam
Apr 12, 2016
Description
Search/Exam
Apr 12, 2016
Request for entry into the European phase
Search/Exam
Sep 22, 2015
Sep 3, 2015
Copy of the international search report
Search/Exam
Sep 3, 2015
Sep 3, 2015
International publication pamphlet
Search/Exam