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The patent EP3784720 was granted to Arkema France on Jan 10, 2024. The application was filed on Apr 26, 2019 under application number EP19729580A. 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 |
|---|---|---|---|
| MITSUBISHI CHEMICAL UK | Oct 9, 2024 | APPLEYARD LEES | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2014180778 |
| DESCRIPTION | JP2016112835 |
| DESCRIPTION | US2009286013 |
| DESCRIPTION | US5338611 |
| DESCRIPTION | WO02072333 |
| DESCRIPTION | WO2010070165 |
| DESCRIPTION | WO2013056845 |
| DESCRIPTION | WO2014013028 |
| INTERNATIONAL-SEARCH-REPORT | JP2014180778 |
| INTERNATIONAL-SEARCH-REPORT | JP2016112835 |
| INTERNATIONAL-SEARCH-REPORT | US2009286013 |
| INTERNATIONAL-SEARCH-REPORT | US5338611 |
| INTERNATIONAL-SEARCH-REPORT | WO02072333 |
| INTERNATIONAL-SEARCH-REPORT | WO2010070165 |
| OPPOSITION | ES2341424 |
| OPPOSITION | US2003109634 |
| OPPOSITION | US2007071965 |
| OPPOSITION | US3916038 |
| OPPOSITION | WO2007143015 |
| OPPOSITION | WO2014013028 |
| OPPOSITION | WO9804599 |
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
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Decision to grant a European patent
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Dec 4, 2023
(Electronic) Receipt
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Dec 4, 2023
English translation of the claims
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Dec 4, 2023
Filing of the translations of the claims
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Dec 4, 2023
German translation of the claims
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Dec 4, 2023
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Aug 4, 2023
Text intended for grant (clean copy)
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(Electronic) Receipt
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Apr 7, 2023
Amended description with annotations
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Apr 7, 2023
Description
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Apr 7, 2023
Letter accompanying subsequently filed items
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(Electronic) Receipt
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Feb 8, 2023
Letter accompanying subsequently filed items
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Feb 8, 2023
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Annex to the communication
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Oct 4, 2022
Communication from the Examining Division
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Jun 3, 2022
(Electronic) Receipt
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Jun 3, 2022
Amended claims with annotations
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Jun 3, 2022
Claims
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Jun 3, 2022
Letter accompanying subsequently filed items
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Mar 29, 2022
(Electronic) Receipt
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Mar 29, 2022
Letter accompanying subsequently filed items
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Mar 29, 2022
Nov 25, 2021
Annex to the communication
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Nov 25, 2021
Communication from the Examining Division
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Nov 17, 2021
Examination started
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Sep 8, 2021
Refund of fees
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Aug 27, 2021
Payment submission rejected
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Jun 14, 2021
(Electronic) Receipt
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Jun 14, 2021
Letter accompanying subsequently filed items
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Jun 14, 2021
Matter concerning the application
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Feb 3, 2021
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Communication to designated inventor
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Nov 27, 2020
Priority search results copy provided by EPO
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Nov 16, 2020
(Electronic) Receipt
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Nov 16, 2020
Nov 16, 2020
General authorisation
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Nov 16, 2020
Request for entry into the European phase
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Nov 9, 2020
Sep 4, 2020
Information on entry into European phase
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Nov 18, 2019
Oct 31, 2019
Copy of the international search report
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Oct 31, 2019
Copy of the international search report
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Oct 31, 2019
Published international application - A1
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Aug 14, 2019
ISR: cited documents
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Abstract
PCTISA
Jun 12, 2019
Claims
PCTISA
Jun 12, 2019
Description
PCTISA
Jun 12, 2019
Drawings
PCTISA
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