The weekly litigation news digest is live. Subscribe now
The patent EP2007981 was granted to Corten on Jan 20, 2021. The application was filed on Apr 2, 2007 under application number EP07747361A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| LM WIND POWER | Oct 20, 2021 | ZIMMERMANN & PARTNER PATENTANWALTE MBB | ADMISSIBLE |
| NORDEX ENERGY | Oct 20, 2021 | HAUCK | ADMISSIBLE |
| NORDEX ENERGY | Oct 20, 2021 | HAUCK PATENTANWALTSPARTNERSCHAFT MBB | ADMISSIBLE |
| SIEMENS GAMESA RENEWABLE ENERGY | Oct 15, 2021 | SGRE ASSOCIATION | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US3578264 |
| INTERNATIONAL-SEARCH-REPORT | WO0015961 |
| INTERNATIONAL-SEARCH-REPORT | WO2005035978 |
| INTERNATIONAL-SEARCH-REPORT | WO9011929 |
| OPPOSITION | EP0663527 |
| OPPOSITION | EP0675285 |
| OPPOSITION | EP1152148 |
| OPPOSITION | EP1314885 |
| OPPOSITION | US5417548 |
| OPPOSITION | US6068446 |
| OPPOSITION | WO0015961 |
| OPPOSITION | WO0116482 |
| OPPOSITION | WO2006090215 |
| OPPOSITION | WO2007114698 |
| OPPOSITION | WO9201865 |
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
Jun 18, 2025
Refund of fees
Appeal
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
Jun 12, 2025
May 19, 2025
May 19, 2025
May 19, 2025
May 16, 2025
(Electronic) Receipt
Appeal
May 16, 2025
May 16, 2025
May 9, 2025
May 9, 2025
May 9, 2025
May 6, 2025
(Electronic) Receipt
Appeal
May 6, 2025
May 6, 2025
May 6, 2025
May 6, 2025
May 6, 2025
Apr 4, 2025
Apr 4, 2025
Apr 4, 2025
Apr 2, 2025
Apr 2, 2025
Apr 2, 2025
Apr 1, 2025
(Electronic) Receipt
Appeal
Apr 1, 2025
Mar 28, 2025
(Electronic) Receipt
Appeal
Mar 28, 2025
Authorisation
Appeal
Mar 28, 2025
Mar 28, 2025
Mar 25, 2025
Mar 25, 2025
Mar 25, 2025
Mar 20, 2025
(Electronic) Receipt
Appeal
Mar 20, 2025
Mar 20, 2025
Jan 21, 2025
Jan 21, 2025
Jan 21, 2025
Jan 21, 2025
Nov 14, 2024
Nov 14, 2024
Nov 14, 2024
Nov 14, 2024
Nov 14, 2024
Nov 14, 2024
Nov 14, 2024
Nov 7, 2024
(Electronic) Receipt
Appeal
Nov 7, 2024
Nov 7, 2024
Nov 7, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 17, 2024
Oct 17, 2024
Oct 16, 2024
(Electronic) Receipt
Appeal
Oct 16, 2024
Oct 16, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 9, 2024
Sep 11, 2024
Jan 3, 2024
Jan 3, 2024
Jan 3, 2024
Dec 22, 2023
Dec 22, 2023
Dec 22, 2023
Dec 21, 2023
(Electronic) Receipt
Appeal
Dec 21, 2023
Dec 21, 2023
Reply to appeal
Appeal
Dec 19, 2023
(Electronic) Receipt
Appeal
Dec 19, 2023
Dec 19, 2023
Reply to appeal
Appeal
Nov 16, 2023
Nov 16, 2023
Nov 16, 2023
Nov 13, 2023
(Electronic) Receipt
Appeal
Nov 13, 2023
Nov 13, 2023
Reply to appeal
Appeal
Aug 24, 2023
Aug 24, 2023
Aug 24, 2023
Aug 21, 2023
(Electronic) Receipt
Appeal
Aug 21, 2023
Aug 21, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 1, 2023
(Electronic) Receipt
Appeal
Jun 1, 2023
Jun 1, 2023
Notice of appeal
Appeal
Apr 19, 2023
Apr 17, 2023
Apr 14, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Means of redress
OPPO
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Apr 11, 2023
Mar 2, 2023
Feb 24, 2023
Feb 24, 2023
Feb 24, 2023
Feb 24, 2023
Feb 20, 2023
Feb 20, 2023
Feb 20, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 14, 2023
Feb 14, 2023
Authorisation
OPPO
Feb 14, 2023
Feb 14, 2023
Feb 14, 2023
Feb 9, 2023
Feb 9, 2023
Feb 9, 2023
Feb 8, 2023
Feb 8, 2023
Feb 8, 2023
Feb 1, 2023
Feb 1, 2023
Feb 1, 2023
Jan 24, 2023
Jan 24, 2023
Authorisation
OPPO
Jan 24, 2023
Jan 24, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 21, 2022
Dec 21, 2022
Dec 21, 2022
Dec 21, 2022
Dec 21, 2022
Dec 20, 2022
Dec 20, 2022
Dec 20, 2022
Dec 15, 2022
Dec 15, 2022
Dec 15, 2022
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Dec 12, 2022
Dec 12, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 8, 2022
Dec 8, 2022
Dec 8, 2022
Dec 5, 2022
Dec 5, 2022
Dec 5, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Aug 9, 2022
Aug 9, 2022
Aug 9, 2022
Aug 8, 2022
Aug 8, 2022
Aug 5, 2022
Aug 5, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Aug 1, 2022
Jul 27, 2022
Jul 27, 2022
Mar 28, 2022
Mar 28, 2022
Mar 28, 2022
Mar 21, 2022
Mar 21, 2022
Mar 21, 2022
Mar 21, 2022
Mar 21, 2022
Nov 10, 2021
Refund of fees
Search/Exam
Nov 9, 2021
Nov 9, 2021
Nov 9, 2021
Nov 9, 2021
Nov 8, 2021
Nov 8, 2021
Nov 8, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Oct 15, 2021
Feb 1, 2021
Jan 11, 2021
Decision to grant a European patent
Search/Exam
Nov 30, 2020
Advice of delivery
Appeal
Nov 25, 2020
Nov 25, 2020
Nov 20, 2020
Nov 20, 2020
Nov 6, 2020
(Electronic) Receipt
Appeal
Nov 6, 2020
Nov 6, 2020
Oct 23, 2020
(Electronic) Receipt
Appeal
Oct 23, 2020
Oct 20, 2020
Advice of delivery
Appeal
Oct 16, 2020
Advice of delivery
Appeal
Oct 14, 2020
Oct 9, 2020
(Electronic) Receipt
Appeal
Oct 9, 2020
Oct 9, 2020
Sep 7, 2020
Advice of delivery
Appeal
Sep 1, 2020
Aug 31, 2020
May 26, 2020
Apr 30, 2020
(Electronic) Receipt
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Citation in opposition procedure
Search/Exam
Apr 30, 2020
Notice of opposition
Search/Exam
Apr 30, 2020
Notice of opposition
Search/Exam
Mar 23, 2020
Nov 13, 2019
(Electronic) Receipt
Appeal
Nov 13, 2019
Nov 13, 2019
Sep 30, 2019
Sep 12, 2019
(Electronic) Receipt
Appeal
Sep 12, 2019
Sep 12, 2019
Notice of appeal
Appeal
Aug 12, 2019
Jul 31, 2019
(Electronic) Receipt
Search/Exam
Jul 31, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 31, 2019
Request for further processing
Search/Exam
Jul 4, 2019
Decision to grant a European patent
Search/Exam
Jun 19, 2019
(Electronic) Receipt
Search/Exam
Jun 19, 2019
Filing of the translations of the claims
Search/Exam
Jun 19, 2019
French translation of claims
Search/Exam
Jun 19, 2019
German translation of the claims
Search/Exam
Jun 19, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 23, 2019
Apr 23, 2019
Apr 23, 2019
Intention to grant (signatures)
Search/Exam
Apr 23, 2019
Text intended for grant (clean copy)
Search/Exam
Apr 23, 2019
Apr 15, 2019
Apr 9, 2019
(Electronic) Receipt
Search/Exam
Apr 9, 2019
Letter concerning fees and payments
Search/Exam
Apr 5, 2019
Mar 29, 2019
Mar 29, 2019
Mar 25, 2019
(Electronic) Receipt
Search/Exam
Mar 25, 2019
Annexes in respect of a client data request
Search/Exam
Mar 25, 2019
Annexes in respect of a client data request
Search/Exam
Mar 25, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 25, 2019
Mar 22, 2019
Invitation to file an authorisation
Search/Exam
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 24, 2019
Advice of delivery
Search/Exam
Jan 22, 2019
Jan 15, 2019
Jan 14, 2019
Annexes in respect of a client data request
Search/Exam
Jan 14, 2019
Jan 11, 2019
Jan 7, 2019
(Electronic) Receipt
Search/Exam
Jan 7, 2019
Amended claims with annotations
Search/Exam
Jan 7, 2019
Authorisation
Search/Exam
Jan 7, 2019
Claims
Search/Exam
Jan 7, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 7, 2019
Jan 7, 2019
Jan 6, 2019
Jul 16, 2018
Advice of delivery
Search/Exam
Jul 10, 2018
Acknowledgement of a document
Search/Exam
Jul 10, 2018
Annex to the communication
Search/Exam
Jul 10, 2018
Summons to attend oral proceedings
Search/Exam
Jul 3, 2018
Preparation for oral proceedings
Search/Exam
Jun 15, 2018
May 29, 2018
Amended claims with annotations
Search/Exam
May 29, 2018
Claims
Search/Exam
May 29, 2018
Apr 11, 2018
Jan 19, 2018
Annex to the communication
Search/Exam
Jan 19, 2018
Communication from the Examining Division
Search/Exam
Jan 19, 2018
Dec 27, 2017
Letter which had not been notified
Search/Exam
Oct 20, 2017
Annex to the communication
Search/Exam
Oct 20, 2017
Communication from the Examining Division
Search/Exam
Aug 7, 2017
Decision to allow further processing
Search/Exam
Jul 29, 2017
Request for further processing
Search/Exam
May 30, 2017
Feb 20, 2017
Feb 2, 2017
Annexes in respect of a client data request
Search/Exam
Feb 2, 2017
Dec 20, 2016
Annex to the communication
Search/Exam
Dec 20, 2016
Dec 20, 2016
Communication from the Examining Division
Search/Exam
Dec 9, 2016
Examination started
Search/Exam
Dec 9, 2016
Letter which had not been notified
Search/Exam
Nov 3, 2016
Oct 5, 2016
Oct 5, 2016
Amended claims with annotations
Search/Exam
Oct 5, 2016
Amendments received before examination
Search/Exam
Aug 1, 2016
Aug 12, 2013
Refund of fees
Search/Exam
Jul 29, 2013
Refund of fees
Search/Exam
Mar 14, 2013
Mar 14, 2013
Mar 14, 2013
Mar 4, 2013
Sep 3, 2009
Aug 6, 2009
Request for assignment
Search/Exam
Jul 16, 2009
Refund of fees
Search/Exam
Jul 3, 2009
Jun 22, 2009
Letter accompanying subsequently filed items
Search/Exam
Jun 22, 2009
Request for assignment
Search/Exam
Jun 12, 2009
Letter accompanying subsequently filed items
Search/Exam
Jun 12, 2009
Jun 9, 2009
Annexes in respect of a client data request
Search/Exam
Jun 9, 2009
Letter accompanying subsequently filed items
Search/Exam
Jun 9, 2009
Payment of fees and costs
Search/Exam
Jun 9, 2009
Mar 19, 2009
Final instructions (loss of partial rights)
Search/Exam
Dec 5, 2008
Dec 3, 2008
Nov 27, 2008
Nov 17, 2008
Nov 5, 2008
Oct 31, 2008
(Electronic) Receipt
Search/Exam
Oct 31, 2008
Oct 31, 2008
Request for entry into the European phase
Search/Exam
Oct 21, 2008
Oct 20, 2008
Aug 18, 2008
Information on entry into European phase
Search/Exam
Dec 6, 2007
Copy of the international search report
Search/Exam
Dec 6, 2007
Oct 30, 2007
Oct 30, 2007
Oct 11, 2007
Published international application - A2
Search/Exam
Apr 2, 2007
Abstract
PCTISA
Apr 2, 2007
Claims
PCTISA
Apr 2, 2007
Description
PCTISA
Apr 2, 2007
Drawings
PCTISA