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The patent EP2402425 was granted to DSM Assets on Apr 14, 2021. The application was filed on Jun 22, 2007 under application number EP11181073A. 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 |
|---|---|---|---|
| N&H DENMARK APS | Jan 10, 2022 | D YOUNG | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0522428 |
| DESCRIPTION | EP0967285 |
| DESCRIPTION | EP1326957 |
| DESCRIPTION | US4708875 |
| DESCRIPTION | US5108925 |
| DESCRIPTION | US6001406 |
| DESCRIPTION | WO9743401 |
| OPPOSITION | WO0246381 |
| OPPOSITION | WO03104382 |
| OPPOSITION | WO2004050820 |
| OPPOSITION | WO2005027953 |
| OPPOSITION | WO9815613 |
| OTHER | WO0246381 |
| OTHER | WO03104382 |
| OTHER | WO2005027953 |
| SEARCH | DD263301 |
| SEARCH | DE19641569 |
| SEARCH | WO0246381 |
| SEARCH | WO03104382 |
| SEARCH | WO2004050820 |
| SEARCH | WO2005027953 |
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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Nov 4, 2025
Nov 4, 2025
Nov 4, 2025
Oct 30, 2025
Oct 14, 2025
(Electronic) Receipt
Appeal
Oct 14, 2025
Oct 14, 2025
Oct 2, 2025
Oct 2, 2025
Oct 2, 2025
Oct 2, 2025
Sep 29, 2025
Sep 29, 2025
Sep 26, 2025
Sep 23, 2025
(Electronic) Receipt
Appeal
Sep 23, 2025
Sep 23, 2025
Sep 23, 2025
Sep 19, 2025
Sep 19, 2025
Sep 16, 2025
Sep 16, 2025
Jul 21, 2025
Jul 17, 2025
Jul 10, 2025
(Electronic) Receipt
Appeal
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Mar 18, 2025
Mar 18, 2025
Mar 13, 2025
(Electronic) Receipt
Appeal
Mar 13, 2025
(Electronic) Receipt
Appeal
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Reply to appeal
Appeal
Mar 13, 2025
Reply to appeal
Appeal
Feb 21, 2025
Nov 15, 2024
Nov 15, 2024
Nov 8, 2024
(Electronic) Receipt
Appeal
Nov 8, 2024
(Electronic) Receipt
Appeal
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Claims
Appeal
Nov 8, 2024
Claims
Appeal
Nov 8, 2024
Claims
Appeal
Nov 8, 2024
Claims
Appeal
Nov 8, 2024
Claims
Appeal
Nov 8, 2024
Claims
Appeal
Nov 8, 2024
Claims
Appeal
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Sep 20, 2024
Sep 10, 2024
(Electronic) Receipt
Appeal
Sep 10, 2024
Notice of appeal
Appeal
Sep 10, 2024
Notice of appeal
Appeal
Sep 9, 2024
(Electronic) Receipt
Appeal
Sep 9, 2024
Sep 9, 2024
Notice of appeal
Appeal
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
Means of redress
OPPO
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
Jul 10, 2024
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Jun 18, 2024
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Jun 11, 2024
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Letter accompanying subsequently filed items
Search/Exam
Jun 11, 2024
Jun 11, 2024
May 29, 2024
May 29, 2024
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May 28, 2024
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Apr 17, 2024
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Authorisation
OPPO
Apr 17, 2024
Apr 17, 2024
Apr 11, 2024
Apr 11, 2024
Apr 11, 2024
Apr 9, 2024
Apr 9, 2024
Apr 9, 2024
Apr 9, 2024
Mar 13, 2024
Letter accompanying subsequently filed items
Search/Exam
Nov 24, 2023
Nov 24, 2023
Nov 24, 2023
Nov 24, 2023
Nov 24, 2023
Nov 24, 2023
Nov 24, 2023
Nov 24, 2023
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Jan 13, 2023
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Jun 9, 2022
Jun 2, 2022
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Jan 27, 2022
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Jan 14, 2022
Jan 10, 2022
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Jan 10, 2022
Jan 10, 2022
Jan 10, 2022
Jan 10, 2022
Jan 10, 2022
Jan 10, 2022
Apr 28, 2021
Mar 18, 2021
Decision to grant a European patent
Search/Exam
Mar 4, 2021
(Electronic) Receipt
Search/Exam
Mar 4, 2021
Filing of the translations of the claims
Search/Exam
Mar 4, 2021
French translation of claims
Search/Exam
Mar 4, 2021
German translation of the claims
Search/Exam
Mar 4, 2021
Letter accompanying subsequently filed items
Search/Exam
Nov 5, 2020
Nov 5, 2020
Nov 5, 2020
Intention to grant (signatures)
Search/Exam
Nov 5, 2020
Text intended for grant (clean copy)
Search/Exam
Nov 5, 2020
Aug 20, 2020
(Electronic) Receipt
Search/Exam
Aug 20, 2020
Amended description with annotations
Search/Exam
Aug 20, 2020
Description
Search/Exam
Aug 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 20, 2020
Jun 24, 2020
Annex to the communication
Search/Exam
Jun 24, 2020
Communication from the Examining Division
Search/Exam
May 28, 2020
May 28, 2020
May 22, 2020
(Electronic) Receipt
Search/Exam
May 22, 2020
Letter accompanying subsequently filed items
Search/Exam
May 22, 2020
Non-patent literature filed by a third party
Search/Exam
May 22, 2020
Non-patent literature filed by a third party
Search/Exam
May 22, 2020
Non-patent literature filed by a third party
Search/Exam
May 22, 2020
Non-patent literature filed by a third party
Search/Exam
May 22, 2020
Non-patent literature filed by a third party
Search/Exam
May 22, 2020
Non-patent literature filed by a third party
Search/Exam
May 22, 2020
Non-patent literature filed by a third party
Search/Exam
May 22, 2020
Non-patent literature filed by a third party
Search/Exam
May 22, 2020
Observations by third parties
Search/Exam
Apr 20, 2020
(Electronic) Receipt
Search/Exam
Apr 20, 2020
Amended claims with annotations
Search/Exam
Apr 20, 2020
Claims
Search/Exam
Apr 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 20, 2020
Mar 12, 2020
Mar 9, 2020
(Electronic) Receipt
Search/Exam
Mar 9, 2020
Nov 19, 2019
Annex to the communication
Search/Exam
Nov 19, 2019
Communication from the Examining Division
Search/Exam
Mar 5, 2019
(Electronic) Receipt
Search/Exam
Mar 5, 2019
Amended claims with annotations
Search/Exam
Mar 5, 2019
Claims
Search/Exam
Mar 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 5, 2019
Dec 3, 2018
Annex to the communication
Search/Exam
Dec 3, 2018
Communication from the Examining Division
Search/Exam
Sep 17, 2018
(Electronic) Receipt
Search/Exam
Sep 17, 2018
Amended claims with annotations
Search/Exam
Sep 17, 2018
Claims
Search/Exam
Sep 17, 2018
Letter accompanying subsequently filed items
Search/Exam
Sep 17, 2018
Jul 10, 2018
Jul 5, 2018
(Electronic) Receipt
Search/Exam
Jul 5, 2018
Mar 23, 2018
Annex to the communication
Search/Exam
Mar 23, 2018
Communication from the Examining Division
Search/Exam
Oct 18, 2017
Oct 3, 2017
Jan 25, 2017
Deficiencies in an enquiry
Search/Exam
Jan 17, 2017
(Electronic) Receipt
Search/Exam
Jan 17, 2017
General enquiry
Search/Exam
Apr 8, 2014
(Electronic) Receipt
Search/Exam
Apr 8, 2014
Abstract
Search/Exam
Apr 8, 2014
Abstract
Search/Exam
Apr 8, 2014
Amended claims with annotations
Search/Exam
Apr 8, 2014
Amended description with annotations
Search/Exam
Apr 8, 2014
Claims
Search/Exam
Apr 8, 2014
Description
Search/Exam
Apr 8, 2014
Letter accompanying subsequently filed items
Search/Exam
Apr 8, 2014
Dec 17, 2013
Annex to the communication
Search/Exam
Dec 17, 2013
Communication from the Examining Division
Search/Exam
Dec 3, 2013
(Electronic) Receipt
Search/Exam
Dec 3, 2013
Amended claims with annotations
Search/Exam
Dec 3, 2013
Claims
Search/Exam
Dec 3, 2013
Letter accompanying subsequently filed items
Search/Exam
Dec 3, 2013
Sep 4, 2013
Annex to the communication
Search/Exam
Sep 4, 2013
Communication from the Examining Division
Search/Exam
Dec 19, 2012
(Electronic) Receipt
Search/Exam
Dec 19, 2012
Amended claims with annotations
Search/Exam
Dec 19, 2012
Claims
Search/Exam
Dec 19, 2012
Letter accompanying subsequently filed items
Search/Exam
Dec 19, 2012
Nov 14, 2012
Refund of fees
Search/Exam
Sep 13, 2012
Annex to the communication
Search/Exam
Sep 13, 2012
Communication from the Examining Division
Search/Exam
Jun 15, 2012
(Electronic) Receipt
Search/Exam
Jun 15, 2012
Jun 15, 2012
Amended claims with annotations
Search/Exam
Jun 15, 2012
Amendments received before examination
Search/Exam
Jun 15, 2012
Letter accompanying subsequently filed items
Search/Exam
Jan 9, 2012
Dec 7, 2011
Notification of forthcoming publication
Search/Exam
Oct 26, 2011
Oct 26, 2011
European search opinion
Search/Exam
Oct 26, 2011
European search report
Search/Exam
Oct 5, 2011
Priority search results copy provided by EPO
Search/Exam
Sep 13, 2011
Sep 13, 2011
Designation of inventor
Search/Exam
Sep 13, 2011
Designation of inventor
Search/Exam
Sep 13, 2011
Designation of inventor
Search/Exam
Sep 13, 2011
Previously filed application
Search/Exam
Sep 13, 2011
Request for grant of a European patent
Search/Exam
Oct 3, 2007
Oct 3, 2007
Oct 3, 2007