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The patent EP3574248 was granted to Danfoss Power Solutions II on May 28, 2025. The application was filed on Jan 26, 2018 under application number EP18704454A. 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 |
|---|---|---|---|
| WALTER STAUFFENBERG | Dec 1, 2022 | PATENTANWALTE DORNER & KOTTER PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2002174904 |
| EXAMINATION | CN201428887Y |
| EXAMINATION | US2013206261 |
| EXAMINATION | US2016369923 |
| EXAMINATION | US5179976 |
| EXAMINATION | WO2014161616 |
| EXAMINATION | WO2016037890 |
| INTERNATIONAL-SEARCH-REPORT | DE10351997 |
| INTERNATIONAL-SEARCH-REPORT | US2002174904 |
| INTERNATIONAL-SEARCH-REPORT | US2015377402 |
| INTERNATIONAL-SEARCH-REPORT | US4124228 |
| OPPOSITION | DE102014010570 |
| OPPOSITION | WO2011134484 |
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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May 2, 2025
May 2, 2025
Apr 17, 2025
Apr 17, 2025
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Apr 1, 2025
Dec 20, 2024
Dec 20, 2024
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Dec 20, 2024
Means of redress
OPPO
Dec 20, 2024
Nov 27, 2024
Nov 27, 2024
Nov 25, 2024
Nov 19, 2024
Nov 19, 2024
Nov 19, 2024
Nov 19, 2024
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May 31, 2024
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May 31, 2024
May 31, 2024
Oct 18, 2023
Oct 12, 2023
Oct 12, 2023
Oct 12, 2023
Aug 10, 2023
Aug 8, 2023
Aug 8, 2023
Aug 4, 2023
Aug 1, 2023
Aug 1, 2023
Authorisation
OPPO
Aug 1, 2023
Aug 1, 2023
Jul 28, 2023
Jul 28, 2023
Jul 28, 2023
Jul 28, 2023
Jul 28, 2023
Jul 28, 2023
Jul 21, 2023
Jul 13, 2023
Jul 4, 2023
Jun 16, 2023
Jun 16, 2023
Authorisation
OPPO
Jun 16, 2023
May 26, 2023
May 26, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
Feb 10, 2023
Feb 10, 2023
Dec 7, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
Dec 1, 2022
May 11, 2022
Mar 31, 2022
Decision to grant a European patent
Search/Exam
Mar 25, 2022
Mar 25, 2022
Mar 21, 2022
(Electronic) Receipt
Search/Exam
Mar 21, 2022
(Electronic) Receipt
Search/Exam
Mar 21, 2022
Authorisation
Search/Exam
Mar 21, 2022
Filing of the translations of the claims
Search/Exam
Mar 21, 2022
French translation of claims
Search/Exam
Mar 21, 2022
German translation of the claims
Search/Exam
Mar 21, 2022
Letter accompanying subsequently filed items
Search/Exam
Mar 21, 2022
Mar 4, 2022
Mar 2, 2022
Feb 22, 2022
(Electronic) Receipt
Search/Exam
Feb 22, 2022
Annexes in respect of a client data request
Search/Exam
Feb 22, 2022
Letter accompanying subsequently filed items
Search/Exam
Feb 22, 2022
Nov 24, 2021
Nov 24, 2021
Nov 24, 2021
Intention to grant (signatures)
Search/Exam
Nov 24, 2021
Text intended for grant (clean copy)
Search/Exam
Nov 24, 2021
Oct 18, 2021
Sep 23, 2021
(Electronic) Receipt
Search/Exam
Sep 23, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 23, 2021
Jul 30, 2021
Decision to allow further processing
Search/Exam
Jul 21, 2021
(Electronic) Receipt
Search/Exam
Jul 21, 2021
Amended claims with annotations
Search/Exam
Jul 21, 2021
Amended description with annotations
Search/Exam
Jul 21, 2021
Jul 21, 2021
Claims
Search/Exam
Jul 21, 2021
Description
Search/Exam
Jul 21, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 21, 2021
Request for further processing
Search/Exam
Feb 16, 2021
Annex to the communication
Search/Exam
Feb 16, 2021
Communication from the Examining Division
Search/Exam
Feb 9, 2021
Examination started
Search/Exam
Jun 12, 2020
(Electronic) Receipt
Search/Exam
Jun 12, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 12, 2020
Apr 23, 2020
Mar 4, 2020
(Electronic) Receipt
Search/Exam
Mar 4, 2020
Mar 4, 2020
Amended claims with annotations
Search/Exam
Mar 4, 2020
Amendments received before examination
Search/Exam
Mar 4, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 6, 2019
Sep 3, 2019
Aug 30, 2019
Communication to designated inventor
Search/Exam
Aug 30, 2019
Communication to designated inventor
Search/Exam
Aug 20, 2019
(Electronic) Receipt
Search/Exam
Aug 20, 2019
Priority search results
Search/Exam
Aug 20, 2019
Request for entry into the European phase
Search/Exam
Aug 12, 2019
Jun 7, 2019
Information on entry into European phase
Search/Exam
Aug 22, 2018
Aug 2, 2018
Copy of the international search report
Search/Exam
Aug 2, 2018
Published international application - A1
Search/Exam
May 16, 2018
May 16, 2018
May 16, 2018
Feb 26, 2018
Jan 26, 2018
(Electronic) Receipt
PCTRO
Jan 26, 2018
Abstract
PCTRO
Jan 26, 2018
Claims
PCTRO
Jan 26, 2018
Description
PCTRO
Jan 26, 2018
Jan 26, 2018
Drawings
PCTRO
Jan 26, 2018