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The patent EP3225536 was granted to GE Energy Power Conversion Technology on Nov 25, 2020. The application was filed on Mar 31, 2016 under application number EP16305376A. 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 |
|---|---|---|---|
| SIEMENS ENERGY | Aug 20, 2021 | HOFSTETTER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2057068 |
| DESCRIPTION | GB1159090 |
| EXAMINATION | DE102006040857 |
| OPPOSITION | DE102006040857 |
| OPPOSITION | DE102012222948 |
| OPPOSITION | EP1641098 |
| OPPOSITION | EP2371703 |
| OPPOSITION | EP2533413 |
| OPPOSITION | EP2610455 |
| OPPOSITION | EP2835521 |
| OPPOSITION | GB1159090 |
| OPPOSITION | GB2442770 |
| OPPOSITION | JPH0446892 |
| OPPOSITION | US2008018309 |
| OPPOSITION | US2008062728 |
| OPPOSITION | US2009279328 |
| OPPOSITION | US2013187473 |
| OPPOSITION | US2014152110 |
| OPPOSITION | US2015183385 |
| OPPOSITION | US2015249416 |
| OPPOSITION | US2015357820 |
| OPPOSITION | US5798633 |
| OPPOSITION | WO2007073980 |
| OPPOSITION | WO9848497 |
| SEARCH | EP1641098 |
| SEARCH | EP2371703 |
| SEARCH | GB2442770 |
| SEARCH | JPH0446892 |
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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Apr 4, 2023
Apr 4, 2023
Mar 30, 2023
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Means of redress
OPPO
Dec 21, 2022
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Authorisation
OPPO
Oct 6, 2022
Oct 6, 2022
Sep 29, 2022
Sep 22, 2022
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Aug 24, 2022
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Aug 20, 2021
Aug 20, 2021
Dec 7, 2020
Oct 29, 2020
Decision to grant a European patent
Search/Exam
Oct 16, 2020
(Electronic) Receipt
Search/Exam
Oct 16, 2020
English translation of the claims
Search/Exam
Oct 16, 2020
Filing of the translations of the claims
Search/Exam
Oct 16, 2020
German translation of the claims
Search/Exam
Oct 16, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 9, 2020
Jul 9, 2020
Jul 9, 2020
Intention to grant (signatures)
Search/Exam
Jul 9, 2020
Text intended for grant (clean copy)
Search/Exam
Jul 9, 2020
Feb 17, 2020
(Electronic) Receipt
Search/Exam
Feb 17, 2020
Abstract
Search/Exam
Feb 17, 2020
Abstract
Search/Exam
Feb 17, 2020
Amended claims with annotations
Search/Exam
Feb 17, 2020
Amended description with annotations
Search/Exam
Feb 17, 2020
Claims
Search/Exam
Feb 17, 2020
Description
Search/Exam
Feb 17, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 17, 2020
Oct 17, 2019
Annex to the communication
Search/Exam
Oct 17, 2019
Communication from the Examining Division
Search/Exam
Aug 16, 2019
(Electronic) Receipt
Search/Exam
Aug 16, 2019
Amended claims with annotations
Search/Exam
Aug 16, 2019
Claims
Search/Exam
Aug 16, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 16, 2019
Jun 24, 2019
Annex to the communication
Search/Exam
Jun 24, 2019
Jun 24, 2019
Apr 15, 2019
(Electronic) Receipt
Search/Exam
Apr 15, 2019
Amended claims with annotations
Search/Exam
Apr 15, 2019
Claims
Search/Exam
Apr 15, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 15, 2019
Mar 1, 2019
Feb 20, 2019
(Electronic) Receipt
Search/Exam
Feb 20, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 20, 2019
Oct 17, 2018
Annex to the communication
Search/Exam
Oct 17, 2018
Communication from the Examining Division
Search/Exam
Oct 10, 2018
Examination started
Search/Exam
Apr 4, 2018
(Electronic) Receipt
Search/Exam
Apr 4, 2018
Letter accompanying subsequently filed items
Search/Exam
Apr 4, 2018
Reply to Written Opinion prepared by the EPO
Search/Exam
Mar 22, 2018
(Electronic) Receipt
Search/Exam
Mar 22, 2018
Letter concerning fees and payments
Search/Exam
Oct 9, 2017
Sep 6, 2017
Notification of forthcoming publication
Search/Exam
Sep 28, 2016
Sep 28, 2016
European search opinion
Search/Exam
Sep 28, 2016
European search report
Search/Exam
Sep 28, 2016
Information on Search Strategy
Search/Exam
Sep 20, 2016
Search started
Search/Exam
May 24, 2016
Communication to designated inventor
Search/Exam
May 24, 2016
Communication to designated inventor
Search/Exam
May 3, 2016
(Electronic) Receipt
Search/Exam
May 3, 2016
Drawings
Search/Exam
May 3, 2016
Letter accompanying subsequently filed items
Search/Exam
May 3, 2016
Matter concerning the application
Search/Exam
Apr 12, 2016
Mar 31, 2016
Abstract
Search/Exam
Mar 31, 2016
Mar 31, 2016
Claims
Search/Exam
Mar 31, 2016
Description
Search/Exam
Mar 31, 2016
Designation of inventor
Search/Exam
Mar 31, 2016
Drawings
Search/Exam
Mar 31, 2016
Request for grant of a European patent
Search/Exam