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The patent EP2808300 was granted to JFE Chemical on Mar 5, 2025. The application was filed on Jan 24, 2013 under application number EP13741083A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| STORA ENSO OYJ | Jun 4, 2024 | STEINRUD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JPH03252053 |
| DESCRIPTION | JPH0689721 |
| DESCRIPTION | JPH08115723 |
| DESCRIPTION | JPH09153359 |
| EXAMINATION | JP2010098020 |
| INTERNATIONAL-SEARCH-REPORT | JP2004519408 |
| INTERNATIONAL-SEARCH-REPORT | JPH06236755 |
| INTERNATIONAL-SEARCH-REPORT | JPH09153359 |
| INTERNATIONAL-SEARCH-REPORT | JPH10308220 |
| INTERNATIONAL-SEARCH-REPORT | JPH1083814 |
| INTERNATIONAL-SEARCH-REPORT | WO2005098999 |
| INTERNATIONAL-SEARCH-REPORT | WO2007040007 |
| OPPOSITION | EP1739771 |
| OPPOSITION | EP3806205 |
| OPPOSITION | JPH10308220 |
| OPPOSITION | US2009297953 |
| OPPOSITION | US2017018775 |
| SEARCH | EP2792638 |
| SEARCH | JPH10308220 |
| SEARCH | JPH1083814 |
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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Decision to grant a European patent
Search/Exam
Aug 2, 2023
(Electronic) Receipt
Search/Exam
Aug 2, 2023
Filing of the translations of the claims
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Aug 2, 2023
French translation of claims
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Aug 2, 2023
German translation of the claims
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Aug 2, 2023
Letter accompanying subsequently filed items
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Intention to grant (signatures)
Search/Exam
Apr 12, 2023
Text intended for grant (clean copy)
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May 27, 2022
(Electronic) Receipt
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May 27, 2022
Amended description with annotations
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May 27, 2022
Description
Search/Exam
May 27, 2022
Letter accompanying subsequently filed items
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May 27, 2022
Feb 4, 2022
Annex to the communication
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Feb 4, 2022
Communication from the Examining Division
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Dec 9, 2021
(Electronic) Receipt
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Dec 9, 2021
Amended claims with annotations
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Dec 9, 2021
Amended claims with annotations
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Dec 9, 2021
Claims
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Claims
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Dec 9, 2021
Letter accompanying subsequently filed items
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Dec 9, 2021
Aug 3, 2021
Annex to the communication
Search/Exam
Aug 3, 2021
Communication from the Examining Division
Search/Exam
Oct 1, 2020
(Electronic) Receipt
Search/Exam
Oct 1, 2020
Amended claims with annotations
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Oct 1, 2020
Claims
Search/Exam
Oct 1, 2020
Letter accompanying subsequently filed items
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Oct 1, 2020
May 25, 2020
Annex to the communication
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May 25, 2020
Communication from the Examining Division
Search/Exam
Dec 4, 2019
Aug 1, 2019
Annex to the communication
Search/Exam
Aug 1, 2019
Communication from the Examining Division
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Aug 22, 2017
Amended claims with annotations
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Aug 22, 2017
Claims
Search/Exam
Aug 22, 2017
Apr 18, 2017
Annex to the communication
Search/Exam
Apr 18, 2017
Communication from the Examining Division
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Mar 31, 2017
Examination started
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Feb 12, 2016
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Amended claims with annotations
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Feb 12, 2016
Amendments received before examination
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Aug 18, 2015
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European search opinion
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Jul 31, 2015
Supplementary European search report
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Jul 20, 2015
Search started
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Nov 5, 2014
Notification of forthcoming publication
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Sep 26, 2014
Submission concerning representation
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Sep 10, 2014
Communication to designated inventor
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Sep 10, 2014
Communication to designated inventor
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Sep 10, 2014
Communication to designated inventor
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Sep 10, 2014
Communication to designated inventor
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Sep 9, 2014
Aug 6, 2014
(Electronic) Receipt
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Aug 6, 2014
Abstract
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Aug 6, 2014
Claims
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Aug 6, 2014
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Description
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Aug 6, 2014
Drawings
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Aug 6, 2014
Request for entry into the European phase
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Aug 6, 2014
Jun 6, 2014
Information on entry into European phase
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Aug 20, 2013
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Aug 1, 2013
Copy of the international search report
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Aug 1, 2013
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International publication pamphlet
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