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The patent EP2531832 was granted to Cytonomest on May 27, 2020. The application was filed on Feb 7, 2011 under application number EP11707946A. 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 |
|---|---|---|---|
| ABS | Mar 1, 2021 | CARPMAELS & RANSFORD | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US6976590 |
| DESCRIPTION | US7569788 |
| INTERNATIONAL-SEARCH-REPORT | US2006244964 |
| INTERNATIONAL-SEARCH-REPORT | US2008087068 |
| INTERNATIONAL-SEARCH-REPORT | US2008108146 |
| INTERNATIONAL-SEARCH-REPORT | WO2009146036 |
| OPPOSITION | US2003078703 |
| OPPOSITION | US2003153085 |
| OPPOSITION | US2006244964 |
| OPPOSITION | US2008087068 |
| OPPOSITION | US2008108146 |
| OPPOSITION | US2009287356 |
| OPPOSITION | WO2004088283 |
| OPPOSITION | WO2009146036 |
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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Dec 3, 2025
Dec 2, 2025
(Electronic) Receipt
Appeal
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Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Apr 2, 2024
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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Sep 14, 2023
Sep 14, 2023
Notice of appeal
Appeal
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Means of redress
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Jun 8, 2020
May 4, 2020
Decision to grant a European patent
Search/Exam
Apr 14, 2020
(Electronic) Receipt
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Apr 14, 2020
Filing of the translations of the claims
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Apr 14, 2020
French translation of claims
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Apr 14, 2020
German translation of the claims
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Apr 14, 2020
Letter accompanying subsequently filed items
Search/Exam
Dec 6, 2019
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Intention to grant (signatures)
Search/Exam
Dec 6, 2019
Text intended for grant (clean copy)
Search/Exam
Dec 6, 2019
Jul 17, 2019
(Electronic) Receipt
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Jul 17, 2019
Amended claims with annotations
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Jul 17, 2019
Amended description with annotations
Search/Exam
Jul 17, 2019
Claims
Search/Exam
Jul 17, 2019
Description
Search/Exam
Jul 17, 2019
Letter accompanying subsequently filed items
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Jul 17, 2019
May 29, 2019
May 24, 2019
(Electronic) Receipt
Search/Exam
May 24, 2019
Letter accompanying subsequently filed items
Search/Exam
May 24, 2019
Jan 18, 2019
Jan 16, 2019
Annex to the communication
Search/Exam
Jan 16, 2019
Communication from the Examining Division
Search/Exam
Jan 11, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 11, 2019
Dec 19, 2018
(Electronic) Receipt
Search/Exam
Dec 19, 2018
Amended claims with annotations
Search/Exam
Dec 19, 2018
Amended claims with annotations
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Dec 19, 2018
Amended claims with annotations
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Dec 19, 2018
Claims
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Dec 19, 2018
Claims
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Dec 19, 2018
Claims
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Dec 19, 2018
Letter accompanying subsequently filed items
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Dec 19, 2018
Oct 22, 2018
Oct 15, 2018
(Electronic) Receipt
Search/Exam
Oct 15, 2018
Aug 9, 2018
Annex to the communication
Search/Exam
Aug 9, 2018
Aug 9, 2018
Communication from the Examining Division
Search/Exam
Jul 31, 2018
Jul 31, 2018
Jul 20, 2018
Observations by third parties
Search/Exam
Jul 20, 2018
Observations by third parties
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Jun 5, 2018
May 29, 2018
May 3, 2018
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May 3, 2018
Intention to grant (signatures)
Search/Exam
May 3, 2018
Text intended for grant (clean copy)
Search/Exam
May 3, 2018
Dec 20, 2017
(Electronic) Receipt
Search/Exam
Dec 20, 2017
Amended claims with annotations
Search/Exam
Dec 20, 2017
Amended description with annotations
Search/Exam
Dec 20, 2017
Claims
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Dec 20, 2017
Description
Search/Exam
Dec 20, 2017
Letter accompanying subsequently filed items
Search/Exam
Dec 20, 2017
Aug 18, 2017
Aug 11, 2017
(Electronic) Receipt
Search/Exam
Aug 11, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 11, 2017
Jun 12, 2017
Annex to the communication
Search/Exam
Jun 12, 2017
Communication from the Examining Division
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Mar 16, 2017
Mar 10, 2017
Nov 30, 2016
(Electronic) Receipt
Search/Exam
Nov 30, 2016
Amended claims with annotations
Search/Exam
Nov 30, 2016
Amended description with annotations
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Nov 30, 2016
Claims
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Nov 30, 2016
Description
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Nov 30, 2016
Letter accompanying subsequently filed items
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Nov 30, 2016
Sep 22, 2016
Sep 19, 2016
(Electronic) Receipt
Search/Exam
Sep 19, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 19, 2016
May 20, 2016
Annex to the communication
Search/Exam
May 20, 2016
Communication from the Examining Division
Search/Exam
Feb 9, 2016
(Electronic) Receipt
Search/Exam
Feb 9, 2016
Amended claims with annotations
Search/Exam
Feb 9, 2016
Amended description with annotations
Search/Exam
Feb 9, 2016
Claims
Search/Exam
Feb 9, 2016
Description
Search/Exam
Feb 9, 2016
Letter accompanying subsequently filed items
Search/Exam
Feb 9, 2016
Nov 23, 2015
Nov 10, 2015
(Electronic) Receipt
Search/Exam
Nov 10, 2015
Letter accompanying subsequently filed items
Search/Exam
Nov 10, 2015
Nov 5, 2015
Annex to the communication
Search/Exam
Nov 5, 2015
Consultation by telephone/in person
Search/Exam
Nov 5, 2015
Nov 4, 2015
Annex to the communication
Search/Exam
Nov 4, 2015
Consultation by telephone/in person
Search/Exam
Nov 4, 2015
Oct 8, 2015
Annex to the communication
Search/Exam
Oct 8, 2015
Communication from the Examining Division
Search/Exam
May 28, 2015
May 26, 2015
(Electronic) Receipt
Search/Exam
May 26, 2015
Amended claims with annotations
Search/Exam
May 26, 2015
Amended description with annotations
Search/Exam
May 26, 2015
Claims
Search/Exam
May 26, 2015
Description
Search/Exam
May 26, 2015
Letter accompanying subsequently filed items
Search/Exam
May 26, 2015
May 22, 2015
(Electronic) Receipt
Search/Exam
May 22, 2015
Letter accompanying subsequently filed items
Search/Exam
May 22, 2015
Mar 26, 2015
Mar 23, 2015
(Electronic) Receipt
Search/Exam
Mar 23, 2015
Letter accompanying subsequently filed items
Search/Exam
Mar 23, 2015
Nov 13, 2014
Annex to the communication
Search/Exam
Nov 13, 2014
Communication from the Examining Division
Search/Exam
Nov 7, 2014
Examination started
Search/Exam
Feb 25, 2014
(Electronic) Receipt
Search/Exam
Feb 25, 2014
Feb 25, 2014
Letter accompanying subsequently filed items
Search/Exam
Feb 13, 2014
Feb 13, 2014
Jan 21, 2014
Authorisation
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Jan 21, 2014
Letter accompanying subsequently filed items
Search/Exam
Jan 21, 2014
Jan 9, 2014
Mar 12, 2013
(Electronic) Receipt
Search/Exam
Mar 12, 2013
Mar 12, 2013
Amended claims with annotations
Search/Exam
Mar 12, 2013
Amendments received before examination
Search/Exam
Mar 12, 2013
Letter accompanying subsequently filed items
Search/Exam
Nov 14, 2012
Oct 2, 2012
Sep 25, 2012
Letter which had not been notified
Search/Exam
Sep 12, 2012
Sep 10, 2012
Communication to designated inventor
Search/Exam
Sep 10, 2012
Communication to designated inventor
Search/Exam
Sep 10, 2012
Communication to designated inventor
Search/Exam
Aug 23, 2012
(Electronic) Receipt
Search/Exam
Aug 23, 2012
Request for entry into the European phase
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Aug 23, 2012
Submission concerning representation
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Aug 22, 2012
Jun 15, 2012
Information on entry into European phase
Search/Exam
Sep 29, 2011
Copy of the international search report
Search/Exam
Sep 29, 2011
Aug 30, 2011
Aug 11, 2011
Published international application - A2
Search/Exam
Jul 28, 2011
Jul 28, 2011
Jul 28, 2011