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The patent EP3325535 was granted to Arkema France on Oct 14, 2020. The application was filed on Jul 21, 2016 under application number EP16757296A. 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 | Jul 14, 2021 | GODEMEYER BLUM LENZE PATENTANWALTE PARTNERSCHAFT MBB WERKPATENT | ADMISSIBLE |
| SOLVAY SPECIALTY POLYMERS USA | Jul 13, 2021 | FERRI | ADMISSIBLE |
| SYENSQO SPECIALTY POLYMERS USA | Jul 13, 2021 | FERRI | ADMISSIBLE |
| VICTREX MANUFACTURING | Jul 9, 2021 | GURUN | ADMISSIBLE |
| VICTREX MANUFACTURING | Jul 9, 2021 | SLINGSBY PARTNERS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP0308803 |
| INTERNATIONAL-SEARCH-REPORT | GB1446962 |
| INTERNATIONAL-SEARCH-REPORT | US4593061 |
| INTERNATIONAL-SEARCH-REPORT | US4874839 |
| INTERNATIONAL-SEARCH-REPORT | US5063265 |
| OPPOSITION | CN103665368 |
| OPPOSITION | DE4207555 |
| OPPOSITION | EP2169012 |
| OPPOSITION | JP2000169738 |
| OPPOSITION | JP2001059040 |
| OPPOSITION | JPH03227320 |
| OPPOSITION | JPH04110339 |
| OPPOSITION | US2004157967 |
| OPPOSITION | US2006052479 |
| OPPOSITION | US2007265415 |
| OPPOSITION | US2011045087 |
| OPPOSITION | US2011151259 |
| OPPOSITION | US4593061 |
| OPPOSITION | US4609714 |
| OPPOSITION | US4874839 |
| OPPOSITION | US4977230 |
| OPPOSITION | US5063265 |
| OPPOSITION | WO9210542 |
| OPPOSITION | WO9531502 |
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.
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Decision to grant a European patent
Search/Exam
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Aug 21, 2020
(Electronic) Receipt
Search/Exam
Aug 21, 2020
English translation of the claims
Search/Exam
Aug 21, 2020
Filing of the translations of the claims
Search/Exam
Aug 21, 2020
German translation of the claims
Search/Exam
Aug 21, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 20, 2020
(Electronic) Receipt
Search/Exam
Aug 20, 2020
General authorisation
Search/Exam
Aug 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 20, 2020
Jul 28, 2020
Jul 16, 2020
(Electronic) Receipt
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Jul 16, 2020
Authorisation
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Jul 16, 2020
Letter accompanying subsequently filed items
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Jul 16, 2020
Jul 14, 2020
Jul 14, 2020
Jul 14, 2020
Intention to grant (signatures)
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Jul 14, 2020
Text intended for grant (clean copy)
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Jul 14, 2020
May 27, 2020
(Electronic) Receipt
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May 27, 2020
Letter accompanying subsequently filed items
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May 27, 2020
Jan 17, 2020
Annex to the communication
Search/Exam
Jan 17, 2020
Communication from the Examining Division
Search/Exam
Jan 10, 2020
Examination started
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Sep 11, 2018
(Electronic) Receipt
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Sep 11, 2018
Sep 11, 2018
Amended claims with annotations
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Sep 11, 2018
Amendments received before examination
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Sep 11, 2018
Letter accompanying subsequently filed items
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May 3, 2018
Mar 1, 2018
Feb 27, 2018
Communication to designated inventor
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Feb 27, 2018
Communication to designated inventor
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Feb 22, 2018
Priority search results copy provided by EPO
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Feb 5, 2018
Jan 15, 2018
(Electronic) Receipt
Search/Exam
Jan 15, 2018
Request for entry into the European phase
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Dec 4, 2017
Information on entry into European phase
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Feb 14, 2017
Jan 26, 2017
Copy of the international search report
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Jan 26, 2017
Copy of the international search report
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Jan 26, 2017
Published international application - A1
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Oct 27, 2016
ISR: cited documents
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Oct 27, 2016
Oct 26, 2016
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Jul 21, 2016
Abstract
PCTISA
Jul 21, 2016
Claims
PCTISA
Jul 21, 2016
Description
PCTISA
Jul 21, 2016
Drawings
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