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The patent EP3370489 was granted to Wilo on May 26, 2021. The application was filed on Feb 6, 2018 under application number EP18000096A. 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 |
|---|---|---|---|
| KSB | Feb 25, 2022 | VON TIETZEN UND HENNIG | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE10107248 |
| DESCRIPTION | EP2607707 |
| DESCRIPTION | EP2779371 |
| EXAMINATION | US2015077955 |
| EXAMINATION | US2016381822 |
| OPPOSITION | EP2779371 |
| OPPOSITION | EP2876988 |
| OPPOSITION | US2006158049 |
| OPPOSITION | US4557225 |
| OPPOSITION | US5714816 |
| OPPOSITION | WO2012062637 |
| SEARCH | EP2779371 |
| SEARCH | EP3092712 |
| SEARCH | US2006044762 |
| SEARCH | US8957556 |
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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Jan 7, 2026
Dec 22, 2025
(Electronic) Receipt
Appeal
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 8, 2025
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Oct 22, 2025
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Jul 25, 2025
(Electronic) Receipt
Appeal
Jul 25, 2025
Jul 25, 2025
Nov 20, 2024
Nov 19, 2024
(Electronic) Receipt
Appeal
Nov 19, 2024
Nov 19, 2024
Nov 19, 2024
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Nov 19, 2024
Nov 18, 2024
(Electronic) Receipt
Appeal
Nov 18, 2024
Nov 18, 2024
Nov 18, 2024
Nov 18, 2024
Nov 18, 2024
Nov 18, 2024
Reply to appeal
Appeal
Jul 16, 2024
Jul 12, 2024
(Electronic) Receipt
Appeal
Jul 12, 2024
Jul 12, 2024
Jul 12, 2024
May 14, 2024
May 14, 2024
May 8, 2024
(Electronic) Receipt
Appeal
May 8, 2024
May 8, 2024
May 8, 2024
Notice of appeal
Appeal
Mar 12, 2024
Mar 12, 2024
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Mar 12, 2024
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Mar 12, 2024
Means of redress
OPPO
Mar 12, 2024
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Non-public annex
OPPO
Nov 13, 2023
Mar 9, 2023
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Jun 9, 2021
Apr 30, 2021
Decision to grant a European patent
Search/Exam
Apr 19, 2021
(Electronic) Receipt
Search/Exam
Apr 19, 2021
English translation of the claims
Search/Exam
Apr 19, 2021
Filing of the translations of the claims
Search/Exam
Apr 19, 2021
French translation of claims
Search/Exam
Apr 19, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 11, 2021
Feb 11, 2021
Feb 11, 2021
Intention to grant (signatures)
Search/Exam
Feb 11, 2021
Text intended for grant (clean copy)
Search/Exam
Feb 11, 2021
Aug 31, 2020
Description
Search/Exam
Aug 31, 2020
Apr 30, 2020
Annex to the communication
Search/Exam
Apr 30, 2020
Communication from the Examining Division
Search/Exam
Apr 22, 2020
Examination started
Search/Exam
Jan 15, 2019
Priority search results
Search/Exam
Jan 15, 2019
Dec 19, 2018
Dec 6, 2018
Dec 6, 2018
Amended claims with annotations
Search/Exam
Dec 6, 2018
Amendments received before examination
Search/Exam
Dec 6, 2018
Letter concerning fees and payments
Search/Exam
Sep 10, 2018
Aug 8, 2018
Notification of forthcoming publication
Search/Exam
Jul 24, 2018
Jul 24, 2018
European search opinion
Search/Exam
Jul 24, 2018
European search report
Search/Exam
Jul 24, 2018
Information on Search Strategy
Search/Exam
Jul 11, 2018
Jul 10, 2018
Communication to designated inventor
Search/Exam
Jul 10, 2018
Search started
Search/Exam
Jun 25, 2018
Letter concerning the inventor
Search/Exam
Jun 12, 2018
May 30, 2018
Letter which had not been notified
Search/Exam
Apr 16, 2018
Communication to designated inventor
Search/Exam
Apr 16, 2018
Communication to designated inventor
Search/Exam
Apr 16, 2018
Communication to designated inventor
Search/Exam
Apr 16, 2018
Communication to designated inventor
Search/Exam
Feb 9, 2018
Abstract
Search/Exam
Feb 9, 2018
Claims
Search/Exam
Feb 9, 2018
Description
Search/Exam
Feb 9, 2018
Designation of inventor
Search/Exam
Feb 9, 2018
Drawings
Search/Exam
Feb 9, 2018
Priority document
Search/Exam
Feb 9, 2018
Request for grant of a European patent
Search/Exam
Feb 6, 2018
Abstract
Search/Exam
Feb 6, 2018
Claims
Search/Exam
Feb 6, 2018
Description
Search/Exam
Feb 6, 2018
Designation of inventor
Search/Exam
Feb 6, 2018
Drawings
Search/Exam
Feb 6, 2018
Request for grant of a European patent
Search/Exam