The weekly litigation news digest is live. Subscribe now
The patent EP2536456 was granted to Sanofi Aventis Deutschland on Apr 28, 2021. The application was filed on Feb 15, 2011 under application number EP11706198A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| WURMSER | Jan 28, 2022 | MEISSNER BOLTE PARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US5104380 |
| EXAMINATION | EP1034008 |
| EXAMINATION | US2006276753 |
| EXAMINATION | US2007129687 |
| EXAMINATION | US5104380 |
| EXAMINATION | US7169132 |
| EXAMINATION | WO2009080775 |
| INTERNATIONAL-SEARCH-REPORT | US2009227955 |
| INTERNATIONAL-SEARCH-REPORT | WO02053214 |
| INTERNATIONAL-SEARCH-REPORT | WO2006045526 |
| INTERNATIONAL-SEARCH-REPORT | WO2006126902 |
| INTERNATIONAL-SEARCH-REPORT | WO2007063342 |
| INTERNATIONAL-SEARCH-REPORT | WO2008087071 |
| OPPOSITION | DE102006038103 |
| OPPOSITION | EP1034008 |
| OPPOSITION | EP2509664 |
| OPPOSITION | EP2536450 |
| OPPOSITION | US2006276753 |
| OPPOSITION | US2007129687 |
| OPPOSITION | US2009048561 |
| OPPOSITION | US2009227955 |
| OPPOSITION | US5104380 |
| OPPOSITION | US7169132 |
| OPPOSITION | WO02053214 |
| OPPOSITION | WO2006045526 |
| OPPOSITION | WO2006045528 |
| OPPOSITION | WO2006126902 |
| OPPOSITION | WO2007063342 |
| OPPOSITION | WO2008087071 |
| OPPOSITION | WO2009080775 |
| OPPOSITION | WO2009105909 |
| OTHER | EP1034008 |
| OTHER | US2006276753 |
| OTHER | US2007129687 |
| OTHER | US5104380 |
| OTHER | US7169132 |
| OTHER | WO2009080775 |
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
Oct 9, 2025
Oct 2, 2025
Oct 2, 2025
Jul 22, 2025
Refund of fees
Search/Exam
Jul 3, 2025
Jul 3, 2025
Jul 2, 2025
Jul 2, 2025
Jun 28, 2025
Jun 11, 2025
Jun 4, 2025
(Electronic) Receipt
Appeal
Jun 4, 2025
Jun 4, 2025
Withdrawal of an appeal
Appeal
Apr 9, 2025
Apr 9, 2025
Apr 4, 2025
Jan 17, 2025
Jan 13, 2025
(Electronic) Receipt
Appeal
Jan 13, 2025
Jan 13, 2025
Nov 28, 2024
Nov 25, 2024
(Electronic) Receipt
Appeal
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Nov 25, 2024
Reply to appeal
Appeal
Jul 25, 2024
Jul 23, 2024
Jul 22, 2024
(Electronic) Receipt
Appeal
Jul 22, 2024
Jul 22, 2024
Jul 22, 2024
May 17, 2024
May 17, 2024
May 16, 2024
May 16, 2024
May 16, 2024
May 13, 2024
(Electronic) Receipt
Appeal
May 13, 2024
Notice of appeal
Appeal
May 8, 2024
May 7, 2024
May 7, 2024
May 7, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Means of redress
OPPO
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Mar 20, 2024
Feb 27, 2024
Jan 31, 2024
Jan 26, 2024
Jan 17, 2024
Jan 12, 2024
Jan 11, 2024
Jan 11, 2024
Jan 11, 2024
Jan 3, 2024
Jan 3, 2024
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 21, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
Dec 19, 2023
May 2, 2023
May 2, 2023
May 2, 2023
Apr 27, 2023
Apr 26, 2023
Apr 26, 2023
Apr 26, 2023
Apr 26, 2023
Apr 26, 2023
Apr 26, 2023
Apr 26, 2023
Apr 12, 2023
Nov 15, 2022
Nov 10, 2022
Nov 10, 2022
Nov 10, 2022
Oct 12, 2022
Oct 6, 2022
Oct 6, 2022
Aug 9, 2022
Aug 4, 2022
Aug 4, 2022
Aug 4, 2022
Jun 24, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Feb 11, 2022
Feb 11, 2022
Feb 3, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
Jan 28, 2022
May 12, 2021
Apr 6, 2021
Apr 1, 2021
Decision to grant a European patent
Search/Exam
Mar 31, 2021
Refund of fees
Search/Exam
Mar 26, 2021
Observations by third parties
Search/Exam
Mar 26, 2021
Observations by third parties
Search/Exam
Mar 26, 2021
Patent document filed by a Third party
Search/Exam
Mar 26, 2021
Patent document filed by a Third party
Search/Exam
Mar 22, 2021
(Electronic) Receipt
Search/Exam
Mar 22, 2021
Filing of the translations of the claims
Search/Exam
Mar 22, 2021
French translation of claims
Search/Exam
Mar 22, 2021
German translation of the claims
Search/Exam
Mar 9, 2021
Mar 5, 2021
Feb 28, 2021
Observations by third parties
Search/Exam
Feb 28, 2021
Observations by third parties
Search/Exam
Feb 23, 2021
Feb 23, 2021
Feb 23, 2021
Intention to grant (signatures)
Search/Exam
Feb 23, 2021
Text intended for grant (clean copy)
Search/Exam
Feb 23, 2021
Feb 9, 2021
(Electronic) Receipt
Search/Exam
Feb 9, 2021
Amended claims with annotations
Search/Exam
Feb 9, 2021
Amended description with annotations
Search/Exam
Feb 9, 2021
Claims
Search/Exam
Feb 9, 2021
Description
Search/Exam
Feb 9, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 9, 2021
Dec 9, 2020
Annex to the communication
Search/Exam
Dec 9, 2020
Communication from the Examining Division
Search/Exam
Dec 3, 2020
Nov 26, 2020
Observations by third parties
Search/Exam
Nov 26, 2020
Observations by third parties
Search/Exam
Oct 26, 2020
(Electronic) Receipt
Search/Exam
Oct 26, 2020
Amended description with annotations
Search/Exam
Oct 26, 2020
Description
Search/Exam
Oct 26, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 26, 2020
Aug 20, 2020
Annex to the communication
Search/Exam
Aug 20, 2020
Communication from the Examining Division
Search/Exam
Jul 30, 2020
Jul 19, 2020
Observations by third parties
Search/Exam
Jul 19, 2020
Observations by third parties
Search/Exam
Jul 19, 2020
Patent document filed by a Third party
Search/Exam
Jul 19, 2020
Patent document filed by a Third party
Search/Exam
Jun 25, 2020
Jun 25, 2020
Jun 25, 2020
Intention to grant (signatures)
Search/Exam
Jun 25, 2020
Text intended for grant (clean copy)
Search/Exam
Jun 25, 2020
May 29, 2020
(Electronic) Receipt
Search/Exam
May 29, 2020
Amended description with annotations
Search/Exam
May 29, 2020
Description
Search/Exam
May 29, 2020
Letter accompanying subsequently filed items
Search/Exam
May 29, 2020
Mar 20, 2020
Mar 11, 2020
(Electronic) Receipt
Search/Exam
Mar 11, 2020
Nov 15, 2019
Annex to the communication
Search/Exam
Nov 15, 2019
Communication from the Examining Division
Search/Exam
Nov 14, 2019
Nov 6, 2019
Observations by third parties
Search/Exam
Nov 6, 2019
Observations by third parties
Search/Exam
Nov 6, 2019
Patent document filed by a Third party
Search/Exam
Nov 6, 2019
Patent document filed by a Third party
Search/Exam
Oct 28, 2019
(Electronic) Receipt
Search/Exam
Oct 28, 2019
Amended description with annotations
Search/Exam
Oct 28, 2019
Description
Search/Exam
Oct 28, 2019
Letter accompanying subsequently filed items
Search/Exam
Oct 28, 2019
Aug 27, 2019
Annex to the communication
Search/Exam
Aug 27, 2019
Jul 5, 2019
(Electronic) Receipt
Search/Exam
Jul 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 5, 2019
Jun 11, 2019
May 29, 2019
(Electronic) Receipt
Search/Exam
May 29, 2019
Apr 9, 2019
Annex to the communication
Search/Exam
Apr 9, 2019
Communication from the Examining Division
Search/Exam
Mar 21, 2019
(Electronic) Receipt
Search/Exam
Mar 21, 2019
Amended description with annotations
Search/Exam
Mar 21, 2019
Description
Search/Exam
Mar 21, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 21, 2019
Mar 11, 2019
Nov 21, 2018
Nov 21, 2018
Nov 21, 2018
Intention to grant (signatures)
Search/Exam
Nov 21, 2018
Text intended for grant (clean copy)
Search/Exam
Nov 21, 2018
May 2, 2018
(Electronic) Receipt
Search/Exam
May 2, 2018
Amended claims with annotations
Search/Exam
May 2, 2018
Claims
Search/Exam
May 2, 2018
Letter accompanying subsequently filed items
Search/Exam
May 2, 2018
Feb 23, 2018
Feb 16, 2018
(Electronic) Receipt
Search/Exam
Feb 16, 2018
Nov 7, 2017
Annex to the communication
Search/Exam
Nov 7, 2017
Communication from the Examining Division
Search/Exam
Oct 11, 2017
(Electronic) Receipt
Search/Exam
Oct 11, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 11, 2017
Oct 10, 2017
Sep 26, 2017
(Electronic) Receipt
Search/Exam
Sep 26, 2017
Jul 19, 2017
Submission concerning representation
Search/Exam
May 26, 2017
Annex to the communication
Search/Exam
May 26, 2017
Communication from the Examining Division
Search/Exam
Apr 20, 2017
(Electronic) Receipt
Search/Exam
Apr 20, 2017
Letter accompanying subsequently filed items
Search/Exam
Apr 20, 2017
Mar 28, 2017
Annex to the communication
Search/Exam
Mar 28, 2017
Mar 21, 2017
Examination started
Search/Exam
Nov 17, 2016
Nov 7, 2016
Nov 7, 2016
Nov 3, 2016
Jan 19, 2016
Dec 18, 2015
Annexes in respect of a client data request
Search/Exam
Dec 18, 2015
Feb 3, 2014
CDS Clean up - amended applicant details
Search/Exam
Apr 3, 2013
Refund of fees
Search/Exam
Nov 28, 2012
Oct 16, 2012
Oct 9, 2012
Priority search results copy provided by EPO
Search/Exam
Sep 28, 2012
Communication to designated inventor
Search/Exam
Sep 14, 2012
(Electronic) Receipt
Search/Exam
Sep 14, 2012
Sep 14, 2012
Request for entry into the European phase
Search/Exam
Sep 4, 2012
Jun 29, 2012
Information on entry into European phase
Search/Exam
Sep 14, 2011
Sep 14, 2011
Aug 25, 2011
Copy of the international search report
Search/Exam
Aug 25, 2011
Published international application - A1
Search/Exam
Jun 15, 2011
Jun 15, 2011
Jun 15, 2011
Feb 15, 2011
(Electronic) Receipt
PCTRO
Feb 15, 2011
Abstract
PCTRO
Feb 15, 2011
Claims
PCTRO
Feb 15, 2011
Description
PCTRO
Feb 15, 2011
Drawings
PCTRO
Feb 15, 2011