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The patent EP2929177 was granted to Wobben Properties on Jul 23, 2025. The application was filed on Nov 13, 2013 under application number EP13791991A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| VESTAS WIND SYSTEMS | May 3, 2023 | GRUNECKER PATENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | DE102011051329 |
| EXAMINATION | EP1314885 |
| EXAMINATION | US2012134817 |
| EXAMINATION | WO2012019655 |
| EXAMINATION | WO2012071679 |
| INTERNATIONAL-SEARCH-REPORT | DE19647102 |
| INTERNATIONAL-SEARCH-REPORT | EP0652367 |
| INTERNATIONAL-SEARCH-REPORT | EP1338793 |
| INTERNATIONAL-SEARCH-REPORT | US2008187442 |
| INTERNATIONAL-SEARCH-REPORT | US2011142668 |
| INTERNATIONAL-SEARCH-REPORT | WO2011157849 |
| OPPOSITION | DE19647102 |
| OPPOSITION | EP0652367 |
| OPPOSITION | FR2863319 |
| OPPOSITION | US2008187442 |
| OPPOSITION | US2011142668 |
| OPPOSITION | WO2011157849 |
| OPPOSITION | WO9821091 |
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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Jun 26, 2025
Jun 26, 2025
Jun 13, 2025
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Apr 7, 2025
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Mar 26, 2025
Mar 21, 2025
Refund of fees
Appeal
Mar 19, 2025
Mar 19, 2025
Mar 14, 2025
(Electronic) Receipt
Appeal
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Withdrawal of an appeal
Appeal
Jan 29, 2025
Jan 29, 2025
Jan 20, 2025
(Electronic) Receipt
Appeal
Jan 20, 2025
Jan 20, 2025
Notice of appeal
Appeal
Nov 19, 2024
Nov 19, 2024
Nov 19, 2024
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Means of redress
OPPO
Nov 19, 2024
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Aug 17, 2022
Jul 7, 2022
Decision to grant a European patent
Search/Exam
Jun 24, 2022
(Electronic) Receipt
Search/Exam
Jun 24, 2022
English translation of the claims
Search/Exam
Jun 24, 2022
Filing of the translations of the claims
Search/Exam
Jun 24, 2022
French translation of claims
Search/Exam
Jun 24, 2022
Letter accompanying subsequently filed items
Search/Exam
Mar 1, 2022
Mar 1, 2022
Mar 1, 2022
Intention to grant (signatures)
Search/Exam
Mar 1, 2022
Text intended for grant (clean copy)
Search/Exam
Mar 1, 2022
Jul 2, 2021
(Electronic) Receipt
Search/Exam
Jul 2, 2021
Amended claims with annotations
Search/Exam
Jul 2, 2021
Amended description with annotations
Search/Exam
Jul 2, 2021
Amended description with annotations
Search/Exam
Jul 2, 2021
Claims
Search/Exam
Jul 2, 2021
Description
Search/Exam
Jul 2, 2021
Description
Search/Exam
Jul 2, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 2, 2021
Feb 22, 2021
Annex to the communication
Search/Exam
Feb 22, 2021
Communication from the Examining Division
Search/Exam
Nov 26, 2020
Nov 13, 2020
(Electronic) Receipt
Search/Exam
Nov 13, 2020
Enquiry as to the processing of the file
Search/Exam
Nov 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 26, 2019
(Electronic) Receipt
Search/Exam
Feb 26, 2019
Amended claims with annotations
Search/Exam
Feb 26, 2019
Amended description with annotations
Search/Exam
Feb 26, 2019
Claims
Search/Exam
Feb 26, 2019
Description
Search/Exam
Feb 26, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 26, 2019
Oct 16, 2018
Annex to the communication
Search/Exam
Oct 16, 2018
Communication from the Examining Division
Search/Exam
Oct 10, 2018
Examination started
Search/Exam
Jun 26, 2018
Nov 28, 2017
(Electronic) Receipt
Search/Exam
Nov 28, 2017
Citation for the examination procedure
Search/Exam
Nov 28, 2017
Letter accompanying subsequently filed items
Search/Exam
Nov 28, 2017
Matter concerning the application
Search/Exam
Nov 9, 2017
(Electronic) Receipt
Search/Exam
Nov 9, 2017
Citation for the examination procedure
Search/Exam
Nov 9, 2017
Letter accompanying subsequently filed items
Search/Exam
Nov 9, 2017
May 29, 2017
(Electronic) Receipt
Search/Exam
May 29, 2017
Citation for the examination procedure
Search/Exam
May 29, 2017
Letter accompanying subsequently filed items
Search/Exam
May 29, 2017
May 24, 2017
(Electronic) Receipt
Search/Exam
May 24, 2017
Citation for the examination procedure
Search/Exam
May 24, 2017
Letter accompanying subsequently filed items
Search/Exam
May 24, 2017
Jan 24, 2017
(Electronic) Receipt
Search/Exam
Jan 24, 2017
Citation for the examination procedure
Search/Exam
Jan 24, 2017
Letter accompanying subsequently filed items
Search/Exam
Jan 24, 2017
Nov 9, 2016
(Electronic) Receipt
Search/Exam
Nov 9, 2016
Letter accompanying subsequently filed items
Search/Exam
Nov 9, 2016
Oct 31, 2016
Jun 14, 2016
Jun 14, 2016
Mar 29, 2016
(Electronic) Receipt
Search/Exam
Mar 29, 2016
Mar 29, 2016
Amended claims with annotations
Search/Exam
Mar 29, 2016
Amendments received before examination
Search/Exam
Mar 29, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 8, 2016
Mar 8, 2016
Mar 2, 2016
Matter concerning the application
Search/Exam
Dec 1, 2015
Nov 25, 2015
Annexes in respect of a client data request
Search/Exam
Nov 25, 2015
Sep 16, 2015
Jul 17, 2015
Jul 15, 2015
Communication to designated inventor
Search/Exam
Jun 23, 2015
May 8, 2015
(Electronic) Receipt
Search/Exam
May 8, 2015
Priority search results
Search/Exam
May 8, 2015
Request for entry into the European phase
Search/Exam
Apr 17, 2015
Information on entry into European phase
Search/Exam
Jul 3, 2014
Jul 3, 2014
Jun 12, 2014
Copy of the international search report
Search/Exam
Jun 12, 2014
Copy of the international search report
Search/Exam
Jun 12, 2014
Published international application - A1
Search/Exam
Apr 8, 2014
Mar 18, 2014
Mar 18, 2014
Feb 10, 2014
Feb 10, 2014
Feb 10, 2014
Nov 13, 2013
(Electronic) Receipt
PCTRO
Nov 13, 2013
Abstract
PCTRO
Nov 13, 2013
Claims
PCTRO
Nov 13, 2013
Description
PCTRO
Nov 13, 2013
Drawings
PCTRO