The weekly litigation news digest is live. Subscribe now
The patent EP2475734 was granted to Arkema France on Apr 7, 2021. The application was filed on Aug 17, 2010 under application number EP10762989A. 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 |
|---|---|---|---|
| DAIKIN INDUSTRIES | Jan 7, 2022 | HOFFMANN EITLE | ADMISSIBLE |
| THE CHEMOURS FC | Jan 5, 2022 | MEWBURN ELLIS | ADMISSIBLE |
| HONEYWELL | Dec 16, 2021 | CROOKS | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP4110388B |
| DESCRIPTION | WO2004037913 |
| DESCRIPTION | WO2006094303 |
| EXAMINATION | EP2246649 |
| EXAMINATION | US2009120619 |
| EXAMINATION | WO2008140809 |
| INTERNATIONAL-SEARCH-REPORT | EP2149592 |
| INTERNATIONAL-SEARCH-REPORT | FR2182956 |
| INTERNATIONAL-SEARCH-REPORT | FR2256381 |
| INTERNATIONAL-SEARCH-REPORT | US2006243944 |
| INTERNATIONAL-SEARCH-REPORT | US2008314073 |
| INTERNATIONAL-SEARCH-REPORT | WO2009110228 |
| INTERNATIONAL-SEARCH-REPORT | WO2010002016 |
| OPPOSITION | EP2246649 |
| OPPOSITION | JP2000161805 |
| OPPOSITION | JP2008134031 |
| OPPOSITION | JP2009222362 |
| OPPOSITION | US2008184731 |
| OPPOSITION | US2008230738 |
| OPPOSITION | US2009120619 |
| OPPOSITION | US6503417 |
| OPPOSITION | WO2006094303 |
| OPPOSITION | WO2008085314 |
| OPPOSITION | WO2008140809 |
| OPPOSITION | WO2009107364 |
| OPPOSITION | WO2010059677 |
| OTHER | EP2246649 |
| OTHER | EP2475735 |
| OTHER | JP2008134031 |
| OTHER | US2008174731 |
| OTHER | US2008314073 |
| OTHER | US2009120619 |
| OTHER | US6503417 |
| OTHER | WO2006094303 |
| OTHER | WO2008140809 |
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
Get instant alerts for new documents
Dec 16, 2025
Dec 16, 2025
Dec 16, 2025
Dec 16, 2025
Oct 23, 2025
Oct 23, 2025
Oct 23, 2025
Oct 23, 2025
Oct 23, 2025
Aug 5, 2025
Aug 5, 2025
Aug 5, 2025
Aug 5, 2025
Aug 5, 2025
Jul 25, 2025
Jul 25, 2025
Jul 25, 2025
Jul 8, 2025
Jul 8, 2025
Jul 8, 2025
Jun 18, 2025
Jun 18, 2025
Jun 13, 2025
Jun 13, 2025
Jun 13, 2025
Jun 12, 2025
(Electronic) Receipt
Appeal
Jun 12, 2025
Jun 12, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 3, 2025
Jun 3, 2025
Jun 3, 2025
Jun 3, 2025
May 27, 2025
(Electronic) Receipt
Appeal
May 27, 2025
General enquiry
Appeal
May 27, 2025
May 6, 2025
May 6, 2025
Apr 29, 2025
(Electronic) Receipt
Appeal
Apr 29, 2025
Apr 29, 2025
Apr 14, 2025
Apr 14, 2025
Apr 7, 2025
Apr 1, 2025
Apr 1, 2025
Dec 12, 2024
Dec 12, 2024
Dec 12, 2024
Dec 9, 2024
Oct 24, 2024
Oct 24, 2024
Oct 18, 2024
(Electronic) Receipt
Appeal
Oct 18, 2024
Oct 18, 2024
Jul 17, 2024
Jul 17, 2024
Jul 12, 2024
(Electronic) Receipt
Appeal
Jul 12, 2024
Jul 12, 2024
Apr 9, 2024
Apr 9, 2024
Apr 8, 2024
Apr 8, 2024
Apr 4, 2024
(Electronic) Receipt
Appeal
Apr 4, 2024
(Electronic) Receipt
Appeal
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Reply to appeal
Appeal
Apr 3, 2024
(Electronic) Receipt
Appeal
Apr 3, 2024
Apr 3, 2024
Apr 3, 2024
Apr 3, 2024
Apr 3, 2024
Apr 3, 2024
Apr 3, 2024
Reply to appeal
Appeal
Jan 24, 2024
Jan 24, 2024
Jan 24, 2024
Jan 23, 2024
Jan 8, 2024
Dec 4, 2023
Dec 4, 2023
Dec 4, 2023
Dec 4, 2023
Nov 28, 2023
(Electronic) Receipt
Appeal
Nov 28, 2023
Nov 28, 2023
Nov 28, 2023
Nov 28, 2023
Nov 28, 2023
Nov 28, 2023
Nov 28, 2023
Nov 28, 2023
Nov 28, 2023
Nov 28, 2023
Nov 19, 2023
(Electronic) Receipt
Appeal
Nov 19, 2023
Nov 19, 2023
Sep 27, 2023
Sep 27, 2023
Sep 27, 2023
Sep 25, 2023
Sep 25, 2023
Sep 25, 2023
Sep 22, 2023
(Electronic) Receipt
Appeal
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Notice of appeal
Appeal
Sep 19, 2023
(Electronic) Receipt
Appeal
Sep 19, 2023
Sep 19, 2023
Notice of appeal
Appeal
Sep 13, 2023
Sep 13, 2023
Authorisation
OPPO
Sep 13, 2023
Sep 13, 2023
Jul 20, 2023
Jul 20, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Means of redress
OPPO
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jul 19, 2023
Jun 15, 2023
Jun 13, 2023
Jun 9, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 6, 2023
Jun 6, 2023
Jun 6, 2023
Apr 19, 2023
Apr 19, 2023
Apr 19, 2023
Apr 19, 2023
Apr 18, 2023
Apr 18, 2023
Apr 17, 2023
Apr 17, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Jan 23, 2023
Jan 23, 2023
Jan 23, 2023
Jan 23, 2023
Jan 17, 2023
Jan 17, 2023
Jan 17, 2023
Jan 5, 2023
Dec 14, 2022
Dec 6, 2022
Dec 6, 2022
Dec 6, 2022
Dec 6, 2022
Oct 27, 2022
Oct 19, 2022
Oct 18, 2022
Oct 17, 2022
Oct 17, 2022
Oct 17, 2022
Oct 17, 2022
Oct 17, 2022
Oct 17, 2022
Oct 17, 2022
Oct 17, 2022
Oct 17, 2022
Oct 11, 2022
Oct 11, 2022
Oct 11, 2022
Oct 5, 2022
Oct 5, 2022
Oct 5, 2022
Oct 5, 2022
Oct 3, 2022
Sep 29, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
Sep 26, 2022
May 31, 2022
May 31, 2022
May 31, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
Apr 21, 2022
Apr 21, 2022
Apr 21, 2022
Apr 21, 2022
Apr 21, 2022
Apr 12, 2022
Apr 12, 2022
Apr 12, 2022
Jan 21, 2022
Jan 21, 2022
Jan 21, 2022
Jan 21, 2022
Jan 13, 2022
Jan 11, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Dec 21, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Dec 16, 2021
Apr 20, 2021
Mar 12, 2021
Decision to grant a European patent
Search/Exam
Feb 26, 2021
(Electronic) Receipt
Search/Exam
Feb 26, 2021
English translation of the claims
Search/Exam
Feb 26, 2021
Filing of the translations of the claims
Search/Exam
Feb 26, 2021
German translation of the claims
Search/Exam
Feb 26, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 3, 2021
Feb 3, 2021
Feb 3, 2021
Intention to grant (signatures)
Search/Exam
Feb 3, 2021
Text intended for grant (clean copy)
Search/Exam
Feb 3, 2021
Jul 16, 2020
Jul 8, 2020
May 12, 2020
Apr 30, 2020
Citation filed by a third party
Search/Exam
Apr 30, 2020
Observations by third parties
Search/Exam
Feb 26, 2020
Decision to allow further processing
Search/Exam
Feb 17, 2020
(Electronic) Receipt
Search/Exam
Feb 17, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 17, 2020
Request for further processing
Search/Exam
Jan 13, 2020
Aug 28, 2019
Aug 22, 2019
(Electronic) Receipt
Search/Exam
Aug 22, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 22, 2019
May 27, 2019
Annex to the communication
Search/Exam
May 27, 2019
Communication from the Examining Division
Search/Exam
Aug 23, 2018
Aug 13, 2018
Non-patent literature filed by a third party
Search/Exam
Aug 13, 2018
Non-patent literature filed by a third party
Search/Exam
Aug 13, 2018
Observations by third parties
Search/Exam
Jul 16, 2018
(Electronic) Receipt
Search/Exam
Jul 16, 2018
Letter accompanying subsequently filed items
Search/Exam
Jul 16, 2018
Request for further processing
Search/Exam
Jun 1, 2018
Feb 14, 2018
Feb 9, 2018
(Electronic) Receipt
Search/Exam
Feb 9, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 9, 2018
Nov 22, 2017
Submission concerning representation
Search/Exam
Oct 25, 2017
Annex to the communication
Search/Exam
Oct 25, 2017
Communication from the Examining Division
Search/Exam
Jul 28, 2016
(Electronic) Receipt
Search/Exam
Jul 28, 2016
Amended description with annotations
Search/Exam
Jul 28, 2016
Description
Search/Exam
Jul 28, 2016
Letter accompanying subsequently filed items
Search/Exam
Jul 28, 2016
Jun 17, 2016
Jun 13, 2016
(Electronic) Receipt
Search/Exam
Jun 13, 2016
Letter accompanying subsequently filed items
Search/Exam
Jun 13, 2016
Mar 24, 2016
Mar 24, 2016
Mar 13, 2016
(Electronic) Receipt
Search/Exam
Mar 13, 2016
Citation filed by a third party
Search/Exam
Mar 13, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 13, 2016
Non-patent literature filed by a third party
Search/Exam
Mar 13, 2016
Non-patent literature filed by a third party
Search/Exam
Mar 13, 2016
Observations by third parties
Search/Exam
Mar 13, 2016
Patent document filed by a Third party
Search/Exam
Mar 13, 2016
Patent document filed by a Third party
Search/Exam
Mar 13, 2016
Patent document filed by a Third party
Search/Exam
Feb 26, 2016
Observations by third parties
Search/Exam
Feb 26, 2016
Patent document filed by a Third party
Search/Exam
Feb 26, 2016
Patent document filed by a Third party
Search/Exam
Feb 11, 2016
Annex to the communication
Search/Exam
Feb 11, 2016
Communication from the Examining Division
Search/Exam
Nov 28, 2013
(Electronic) Receipt
Search/Exam
Nov 28, 2013
Description
Search/Exam
Nov 28, 2013
Letter accompanying subsequently filed items
Search/Exam
Nov 28, 2013
Oct 10, 2013
Oct 3, 2013
(Electronic) Receipt
Search/Exam
Oct 3, 2013
Letter accompanying subsequently filed items
Search/Exam
Oct 3, 2013
Jun 10, 2013
Annex to the communication
Search/Exam
Jun 10, 2013
Communication from the Examining Division
Search/Exam
Oct 30, 2012
(Electronic) Receipt
Search/Exam
Oct 30, 2012
Oct 30, 2012
Amendments received before examination
Search/Exam
Oct 30, 2012
Letter accompanying subsequently filed items
Search/Exam
Jun 20, 2012
May 11, 2012
May 9, 2012
Mar 26, 2012
Feb 9, 2012
(Electronic) Receipt
Search/Exam
Feb 9, 2012
Request for entry into the European phase
Search/Exam
Jan 20, 2012
Information on entry into European phase
Search/Exam
Apr 7, 2011
Mar 17, 2011
Copy of the international search report
Search/Exam
Mar 17, 2011
Copy of the international search report
Search/Exam
Mar 17, 2011
Published international application - A1
Search/Exam
Jan 20, 2011
Jan 20, 2011
Jan 20, 2011
Oct 7, 2010
Aug 17, 2010
Abstract
PCTISA
Aug 17, 2010
Claims
PCTISA
Aug 17, 2010
Description
PCTISA