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The patent EP3663573 was granted to General Electric Renovables Espaa SL on Aug 24, 2022. The application was filed on Dec 4, 2018 under application number EP18382891A. 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 |
|---|---|---|---|
| WOBBEN PROPERTIES | May 24, 2023 | EISENFUHR SPEISER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | CN201671762U |
| OPPOSITION | DE10033029 |
| OPPOSITION | DE102005034899 |
| OPPOSITION | DE102012204239 |
| OPPOSITION | US2010301604 |
| OPPOSITION | US2012056425 |
| OPPOSITION | US2012087792 |
| OPPOSITION | US2012217748 |
| OPPOSITION | US2018266391 |
| OPPOSITION | WO03054388 |
| OPPOSITION | WO2009068035 |
| OPPOSITION | WO2011124230 |
| OPPOSITION | WO2017092773 |
| OPPOSITION | WO9936695 |
| SEARCH | US2010301604 |
| SEARCH | US2010301605 |
| SEARCH | US2012056425 |
| SEARCH | US2012217748 |
| SEARCH | US2018266391 |
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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Dec 18, 2025
Dec 14, 2025
(Electronic) Receipt
Appeal
Dec 14, 2025
Dec 14, 2025
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Reply to appeal
Appeal
Aug 13, 2025
Aug 8, 2025
(Electronic) Receipt
Appeal
Aug 8, 2025
Aug 8, 2025
Jun 13, 2025
Jun 13, 2025
Jun 6, 2025
(Electronic) Receipt
Appeal
Jun 6, 2025
Jun 6, 2025
Notice of appeal
Appeal
Apr 8, 2025
Apr 8, 2025
Apr 8, 2025
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Means of redress
OPPO
Apr 8, 2025
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Sep 6, 2022
Jul 28, 2022
Decision to grant a European patent
Search/Exam
Jul 14, 2022
(Electronic) Receipt
Search/Exam
Jul 14, 2022
Filing of the translations of the claims
Search/Exam
Jul 14, 2022
French translation of claims
Search/Exam
Jul 14, 2022
German translation of the claims
Search/Exam
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Intention to grant (signatures)
Search/Exam
Jun 27, 2022
Text intended for grant (clean copy)
Search/Exam
Jun 27, 2022
May 18, 2022
Examination started
Search/Exam
Dec 9, 2020
(Electronic) Receipt
Search/Exam
Dec 9, 2020
Dec 9, 2020
Amended claims with annotations
Search/Exam
Dec 9, 2020
Amendments received before examination
Search/Exam
Dec 9, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 16, 2020
May 13, 2020
Notification of forthcoming publication
Search/Exam
Jan 21, 2020
Nov 26, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 26, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 26, 2019
Nov 26, 2019
Nov 26, 2019
Submission concerning representation
Search/Exam
Nov 22, 2019
Nov 19, 2019
May 31, 2019
May 31, 2019
European search opinion
Search/Exam
May 31, 2019
European search report
Search/Exam
May 31, 2019
Information on Search Strategy
Search/Exam
May 23, 2019
Search started
Search/Exam
Feb 27, 2019
Communication to designated inventor
Search/Exam
Feb 27, 2019
Communication to designated inventor
Search/Exam
Feb 27, 2019
Communication to designated inventor
Search/Exam
Feb 27, 2019
Communication to designated inventor
Search/Exam
Feb 27, 2019
Communication to designated inventor
Search/Exam
Dec 14, 2018
Dec 4, 2018
Abstract
Search/Exam
Dec 4, 2018
Dec 4, 2018
Claims
Search/Exam
Dec 4, 2018
Description
Search/Exam
Dec 4, 2018
Designation of inventor
Search/Exam
Dec 4, 2018
Drawings
Search/Exam
Dec 4, 2018
Request for grant of a European patent
Search/Exam