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The patent EP3617254 was granted to Arkema France on Aug 18, 2021. The application was filed on Jun 21, 2018 under application number EP19204501A. 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 |
|---|---|---|---|
| EVONIK OPERATIONS | May 18, 2022 | GODEMEYER BLUM LENZE PATENTANWALTE PARTNERSCHAFT MBB WERKPATENT | ADMISSIBLE |
| VICTREX MANUFACTURING | May 17, 2022 | GURUN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0201367 |
| DESCRIPTION | EP0324680 |
| DESCRIPTION | EP0335186 |
| DESCRIPTION | EP0406067 |
| DESCRIPTION | EP1505099 |
| DESCRIPTION | US2014005331 |
| DESCRIPTION | WO2008135663 |
| DESCRIPTION | WO2012066241 |
| DESCRIPTION | WO2015121583 |
| DESCRIPTION | WO2016062896 |
| DESCRIPTION | WO2017017388 |
| OPPOSITION | EP2725055 |
| OPPOSITION | FR3067968 |
| OPPOSITION | US2017037204 |
| OPPOSITION | US2017165875 |
| OPPOSITION | US5275883 |
| OPPOSITION | US5888580 |
| OPPOSITION | WO2017017388 |
| OPPOSITION | WO2017103502 |
| OPPOSITION | WO2018234436 |
| SEARCH | FR2997036 |
| SEARCH | FR2997089 |
| SEARCH | FR3017330 |
| SEARCH | WO2017017388 |
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 22, 2025
Refund of fees
Search/Exam
Oct 20, 2025
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(Electronic) Receipt
Appeal
Oct 15, 2025
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Withdrawal of an appeal
Appeal
Jul 11, 2025
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Appeal
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Appeal
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Appeal
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Appeal
Jul 8, 2024
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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
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Appeal
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Letter accompanying subsequently filed items
Search/Exam
Jan 10, 2024
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(Electronic) Receipt
Appeal
Jan 4, 2024
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Notice of appeal
Appeal
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Aug 31, 2021
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Decision to grant a European patent
Search/Exam
Jul 6, 2021
(Electronic) Receipt
Search/Exam
Jul 6, 2021
English translation of the claims
Search/Exam
Jul 6, 2021
Filing of the translations of the claims
Search/Exam
Jul 6, 2021
German translation of the claims
Search/Exam
Jul 6, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 2, 2021
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Jul 2, 2021
Intention to grant (signatures)
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Jul 2, 2021
Text intended for grant (clean copy)
Search/Exam
Jul 2, 2021
Mar 23, 2021
(Electronic) Receipt
Search/Exam
Mar 23, 2021
Amended claims with annotations
Search/Exam
Mar 23, 2021
Amended description with annotations
Search/Exam
Mar 23, 2021
Claims
Search/Exam
Mar 23, 2021
Description
Search/Exam
Mar 23, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 23, 2021
Feb 25, 2021
Annex to the communication
Search/Exam
Feb 25, 2021
Communication from the Examining Division
Search/Exam
Feb 18, 2021
Examination started
Search/Exam
Dec 8, 2020
Decision to allow further processing
Search/Exam
Nov 27, 2020
(Electronic) Receipt
Search/Exam
Nov 27, 2020
Nov 27, 2020
Amended claims with annotations
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Nov 27, 2020
Nov 27, 2020
Amended description with annotations
Search/Exam
Nov 27, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 27, 2020
Request for further processing
Search/Exam
Sep 25, 2020
Sep 4, 2020
(Electronic) Receipt
Search/Exam
Sep 4, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 4, 2020
Maintenance of the application
Search/Exam
Mar 9, 2020
Feb 11, 2020
Refund of fees
Search/Exam
Feb 5, 2020
Notification of forthcoming publication
Search/Exam
Jan 23, 2020
Jan 23, 2020
European search opinion
Search/Exam
Jan 23, 2020
European search report
Search/Exam
Jan 23, 2020
Information on Search Strategy
Search/Exam
Jan 15, 2020
Search started
Search/Exam
Dec 13, 2019
Communication to designated inventor
Search/Exam
Dec 13, 2019
Communication to designated inventor
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Dec 13, 2019
Communication to designated inventor
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Dec 13, 2019
Communication to designated inventor
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Dec 13, 2019
Communication to designated inventor
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Dec 13, 2019
Communication to designated inventor
Search/Exam
Dec 13, 2019
Communication to designated inventor
Search/Exam
Oct 24, 2019
Priority search results copy provided by EPO
Search/Exam
Oct 22, 2019
Abstract
Search/Exam
Oct 22, 2019
Oct 22, 2019
Claims
Search/Exam
Oct 22, 2019
Description
Search/Exam
Oct 22, 2019
Designation of inventor
Search/Exam
Oct 22, 2019
Drawings
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Oct 22, 2019
Priority search results
Search/Exam
Oct 22, 2019
Request for grant of a European patent
Search/Exam
Jul 11, 2018
Priority document
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