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The patent EP3429960 was granted to Arkema France on Dec 9, 2020. The application was filed on Mar 14, 2017 under application number EP17715231A. 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 |
|---|---|---|---|
| JOHNSON MATTHEY PUBLIC | Sep 9, 2021 | BOWN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2011012815 |
| INTERNATIONAL-SEARCH-REPORT | US4243554 |
| INTERNATIONAL-SEARCH-REPORT | US4389335 |
| OPPOSITION | AU2014262208 |
| OPPOSITION | GB1281051 |
| OPPOSITION | US2892685 |
| OPPOSITION | US8846564 |
| OPPOSITION | WO2008068305 |
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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Jul 28, 2025
Refund of fees
Appeal
Jul 24, 2025
Jul 24, 2025
Jun 17, 2025
(Electronic) Receipt
Appeal
Jun 17, 2025
Jun 17, 2025
Withdrawal of an appeal
Appeal
May 16, 2025
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Apr 23, 2025
Apr 15, 2025
(Electronic) Receipt
Appeal
Apr 15, 2025
Apr 15, 2025
Notice of appeal
Appeal
Apr 7, 2025
Apr 1, 2025
Letter accompanying subsequently filed items
Search/Exam
Apr 1, 2025
Feb 17, 2025
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Means of redress
Search/Exam
Feb 17, 2025
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Dec 21, 2020
Nov 12, 2020
Decision to grant a European patent
Search/Exam
Nov 3, 2020
(Electronic) Receipt
Search/Exam
Nov 3, 2020
English translation of the claims
Search/Exam
Nov 3, 2020
Filing of the translations of the claims
Search/Exam
Nov 3, 2020
German translation of the claims
Search/Exam
Nov 3, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 17, 2020
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Intention to grant (signatures)
Search/Exam
Jul 17, 2020
Text intended for grant (clean copy)
Search/Exam
Jul 17, 2020
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May 29, 2020
Examination started
Search/Exam
Sep 20, 2019
Decision to allow further processing
Search/Exam
Sep 6, 2019
(Electronic) Receipt
Search/Exam
Sep 6, 2019
Sep 6, 2019
Amended claims with annotations
Search/Exam
Sep 6, 2019
Letter accompanying subsequently filed items
Search/Exam
Sep 6, 2019
Request for further processing
Search/Exam
Jul 8, 2019
Jan 4, 2019
Nov 20, 2018
Nov 13, 2018
Priority search results copy provided by EPO
Search/Exam
Oct 29, 2018
Communication to designated inventor
Search/Exam
Oct 29, 2018
Communication to designated inventor
Search/Exam
Oct 22, 2018
Oct 9, 2018
(Electronic) Receipt
Search/Exam
Oct 9, 2018
Request for entry into the European phase
Search/Exam
Oct 3, 2018
Jul 25, 2018
Information on entry into European phase
Search/Exam
Oct 10, 2017
Sep 21, 2017
Copy of the international search report
Search/Exam
Sep 21, 2017
Copy of the international search report
Search/Exam
Sep 21, 2017
Sep 21, 2017
Published international application - A1
Search/Exam
Jun 6, 2017
ISR: cited documents
PCTISA
Jun 6, 2017
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Mar 14, 2017
Abstract
PCTISA
Mar 14, 2017
Claims
PCTISA
Mar 14, 2017
Description
PCTISA