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The patent EP2834517 was granted to Cortenergy on May 6, 2020. The application was filed on Mar 12, 2013 under application number EP13728545A. 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 |
|---|---|---|---|
| SIEMENS GAMESA RENEWABLE ENERGY | Feb 2, 2021 | SGRE ASSOCIATION | ADMISSIBLE |
| SIEMENS GAMESA RENEWABLE ENERGY DEUTSCHLAND | Feb 2, 2021 | SGRE ASSOCIATION | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2003EP05605 |
| DESCRIPTION | WO2004EP03294 |
| DESCRIPTION | EP1845258 |
| DESCRIPTION | EP2194267 |
| DESCRIPTION | EP2343450 |
| DESCRIPTION | US2009263252 |
| DESCRIPTION | US2010141269 |
| DESCRIPTION | US2011229332 |
| DESCRIPTION | US2012027588 |
| DESCRIPTION | US2012134836 |
| DESCRIPTION | US2012141281 |
| DESCRIPTION | US6910867 |
| DESCRIPTION | US8052394 |
| INTERNATIONAL-SEARCH-REPORT | DE102009025857 |
| INTERNATIONAL-SEARCH-REPORT | EP1152148 |
| INTERNATIONAL-SEARCH-REPORT | GB2265672 |
| INTERNATIONAL-SEARCH-REPORT | US4976587 |
| OPPOSITION | US6910867 |
| OPPOSITION | WO2012007058 |
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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Oct 29, 2025
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Oct 27, 2025
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Sep 18, 2025
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Sep 1, 2025
Aug 29, 2025
(Electronic) Receipt
Appeal
Aug 29, 2025
Aug 29, 2025
Aug 14, 2025
Aug 11, 2025
(Electronic) Receipt
Appeal
Aug 11, 2025
Aug 11, 2025
Jul 31, 2025
Jul 28, 2025
(Electronic) Receipt
Appeal
Jul 28, 2025
Jul 28, 2025
Jul 24, 2025
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Jul 23, 2025
Jul 18, 2025
Jul 18, 2025
Jul 18, 2025
Jul 18, 2025
Jul 18, 2025
Jun 17, 2025
Jun 13, 2025
(Electronic) Receipt
Appeal
Jun 13, 2025
Authorisation
Appeal
Jun 13, 2025
Jun 12, 2025
(Electronic) Receipt
Appeal
Jun 12, 2025
Jun 12, 2025
Apr 29, 2025
Apr 29, 2025
Feb 14, 2025
Feb 14, 2025
Feb 14, 2025
Feb 10, 2025
(Electronic) Receipt
Appeal
Feb 10, 2025
Feb 10, 2025
Jan 22, 2025
Jan 17, 2025
(Electronic) Receipt
Appeal
Jan 17, 2025
Jan 17, 2025
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 13, 2024
Nov 7, 2024
Jun 27, 2024
Jun 24, 2024
(Electronic) Receipt
Appeal
Jun 24, 2024
Jun 24, 2024
Apr 8, 2024
Apr 2, 2024
(Electronic) Receipt
Appeal
Apr 2, 2024
Apr 2, 2024
Reply to appeal
Appeal
Dec 1, 2023
Dec 1, 2023
Nov 27, 2023
(Electronic) Receipt
Appeal
Nov 27, 2023
Nov 27, 2023
Nov 15, 2023
(Electronic) Receipt
Appeal
Nov 15, 2023
Nov 15, 2023
Nov 15, 2023
Nov 15, 2023
Nov 15, 2023
Nov 15, 2023
Oct 2, 2023
Oct 2, 2023
Sep 27, 2023
(Electronic) Receipt
Appeal
Sep 27, 2023
Sep 27, 2023
Notice of appeal
Appeal
Sep 22, 2023
Sep 22, 2023
Sep 15, 2023
(Electronic) Receipt
Appeal
Sep 15, 2023
Sep 15, 2023
Notice of appeal
Appeal
Jul 20, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Means of redress
OPPO
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 17, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
General enquiry
OPPO
Jul 12, 2023
General enquiry
OPPO
Jul 12, 2023
Jul 12, 2023
Oct 13, 2022
Oct 10, 2022
Oct 4, 2022
Oct 4, 2022
Oct 4, 2022
Oct 4, 2022
Oct 4, 2022
Aug 18, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 12, 2022
Aug 8, 2022
Aug 5, 2022
Jul 27, 2022
Jul 27, 2022
Jul 26, 2022
Jul 22, 2022
Jul 22, 2022
Authorisation
OPPO
Jul 22, 2022
Jul 20, 2022
Jul 20, 2022
Jul 20, 2022
Jul 20, 2022
Apr 21, 2022
Apr 21, 2022
Dec 21, 2021
Dec 17, 2021
Dec 17, 2021
Dec 17, 2021
Dec 17, 2021
Dec 17, 2021
Dec 17, 2021
Jul 14, 2021
Jul 8, 2021
Jul 8, 2021
Annex
OPPO
Jul 8, 2021
Jul 8, 2021
Feb 26, 2021
Feb 26, 2021
Feb 11, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
May 18, 2020
Apr 9, 2020
Decision to grant a European patent
Search/Exam
Feb 18, 2020
(Electronic) Receipt
Search/Exam
Feb 18, 2020
Filing of the translations of the claims
Search/Exam
Feb 18, 2020
French translation of claims
Search/Exam
Feb 18, 2020
German translation of the claims
Search/Exam
Feb 18, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 26, 2019
Nov 26, 2019
Nov 26, 2019
Intention to grant (signatures)
Search/Exam
Nov 26, 2019
Text intended for grant (clean copy)
Search/Exam
Nov 26, 2019
May 9, 2019
Decision to allow further processing
Search/Exam
Apr 25, 2019
Apr 9, 2019
(Electronic) Receipt
Search/Exam
Apr 9, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 8, 2019
(Electronic) Receipt
Search/Exam
Apr 8, 2019
Amended claims with annotations
Search/Exam
Apr 8, 2019
Claims
Search/Exam
Apr 8, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 8, 2019
Apr 8, 2019
Request for further processing
Search/Exam
Apr 2, 2019
Mar 25, 2019
(Electronic) Receipt
Search/Exam
Mar 25, 2019
Annexes in respect of a client data request
Search/Exam
Mar 25, 2019
Authorisation
Search/Exam
Mar 25, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 25, 2019
Mar 22, 2019
Mar 19, 2019
(Electronic) Receipt
Search/Exam
Mar 19, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 19, 2019
Mar 19, 2019
Jan 28, 2019
Jan 22, 2019
Jan 14, 2019
Annexes in respect of a client data request
Search/Exam
Jan 14, 2019
Jan 6, 2019
Annexes in respect of a client data request
Search/Exam
Jan 6, 2019
Aug 17, 2018
Annex to the communication
Search/Exam
Aug 17, 2018
Communication from the Examining Division
Search/Exam
May 4, 2018
Mar 28, 2018
Matter concerning the application
Search/Exam
Jan 19, 2018
Annex to the communication
Search/Exam
Jan 19, 2018
Oct 26, 2017
May 8, 2017
May 4, 2016
Nov 30, 2015
Decision to allow further processing
Search/Exam
Nov 20, 2015
Nov 20, 2015
Nov 20, 2015
Request for further processing
Search/Exam
Sep 10, 2015
Sep 10, 2015
Claim deemed abandoned
Search/Exam
Jan 15, 2015
Jan 14, 2015
Jan 14, 2015
Request for further processing allowed
Search/Exam
Dec 8, 2014
Communication to designated inventor
Search/Exam
Nov 27, 2014
Payment of fees and costs
Search/Exam
Nov 27, 2014
Payment of fees and costs
Search/Exam
Nov 27, 2014
Request for further processing
Search/Exam
Nov 24, 2014
Oct 7, 2014
Request for entry into the European phase
Search/Exam
Oct 1, 2014
Jul 23, 2014
Information on entry into European phase
Search/Exam
Apr 10, 2014
Copy of the international search report
Search/Exam
Apr 10, 2014
Feb 26, 2014
Feb 26, 2014
Feb 26, 2014
Feb 13, 2014
Oct 9, 2013
Oct 9, 2013
Sep 19, 2013
Published international application - A2
Search/Exam
Jun 11, 2013
Abstract
PCTISA
Jun 11, 2013
Claims
PCTISA
Jun 11, 2013
Description
PCTISA
Jun 11, 2013
Drawings
PCTISA