Patent No. EP2644887 (titled "Method Of Rotor-Stall Prevention In Wind Turbines") was filed by General Electric on Mar 26, 2013. The application was issued on Mar 22, 2023.

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 |
|---|---|---|
| WOBBEN PROPERTIES | Dec 22, 2023 | EISENFUHR SPEISER |
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
Jan 2, 2026
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Aug 28, 2025
Aug 25, 2025
Aug 25, 2025
Aug 25, 2025
Aug 25, 2025
Aug 25, 2025
Aug 25, 2025
Aug 25, 2025
Aug 25, 2025
Aug 25, 2025
Jul 3, 2025
Jul 3, 2025
Jun 24, 2025
Jun 24, 2025
Jun 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 10, 2025
Mar 27, 2025
Mar 24, 2025
Mar 24, 2025
Mar 24, 2025
Feb 14, 2025
Feb 14, 2025
Feb 11, 2025
Feb 10, 2025
Feb 10, 2025
Feb 10, 2025
Feb 10, 2025
Feb 10, 2025
Feb 10, 2025
Feb 4, 2025
Feb 4, 2025
Feb 4, 2025
Nov 15, 2024
Nov 15, 2024
Nov 15, 2024
Nov 15, 2024
Nov 15, 2024
Nov 12, 2024
Nov 8, 2024
Nov 8, 2024
Nov 7, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Nov 4, 2024
Oct 7, 2024
Oct 7, 2024
Oct 7, 2024
Oct 7, 2024
Oct 7, 2024
Oct 7, 2024
Oct 7, 2024
May 16, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
May 15, 2024
Jan 16, 2024
Jan 16, 2024
Jan 9, 2024
Jan 9, 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 22, 2023
Dec 22, 2023
Dec 22, 2023
Nov 9, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Nov 2, 2023
Apr 4, 2023
Feb 23, 2023
Feb 9, 2023
Feb 9, 2023
Feb 9, 2023
Feb 9, 2023
Feb 9, 2023
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Aug 9, 2021
Aug 9, 2021
Aug 9, 2021
May 31, 2021
May 26, 2021
May 26, 2021
May 26, 2021
Mar 30, 2021
Mar 30, 2021
Jun 24, 2019
Jun 24, 2019
Jun 24, 2019
Jun 24, 2019
Jun 24, 2019
Apr 18, 2019
Apr 12, 2019
Apr 11, 2019
Apr 11, 2019
Apr 11, 2019
Apr 10, 2019
Apr 9, 2019
Apr 3, 2019
Mar 28, 2019
Dec 12, 2018
Dec 12, 2018
Dec 3, 2018
Jan 5, 2018
Jan 5, 2018
Jan 5, 2018
Jan 5, 2018
Jan 5, 2018
Jan 5, 2018
Jan 5, 2018
Jul 10, 2017
Jun 7, 2017
Jun 7, 2017
Jun 7, 2017
Jun 7, 2017
Apr 26, 2016
Sep 4, 2013
Jul 3, 2013
Jul 1, 2013
Jun 19, 2013
Jun 4, 2013
May 27, 2013
Mar 26, 2013
Mar 26, 2013
Mar 26, 2013
Mar 26, 2013
Mar 26, 2013
Mar 26, 2013
Mar 26, 2013