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The patent EP2453556 was granted to Grundfos Management on May 3, 2023. The application was filed on Mar 15, 2011 under application number EP11002126A. 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 |
|---|---|---|---|
| KSB | Feb 2, 2024 | 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 |
|---|---|
| OPPOSITION | DE102004017507 |
| OPPOSITION | US2002130578 |
| OPPOSITION | US2008211336 |
| OPPOSITION | US2009148315 |
| OPPOSITION | US4043706 |
| OPPOSITION | US4081703 |
| OPPOSITION | US5006745 |
| OPPOSITION | US5552653 |
| OPPOSITION | US6323574 |
| OPPOSITION | US7709988 |
| OPPOSITION | WO03103114 |
| OPPOSITION | WO2008019818 |
| SEARCH | DE102004017507 |
| SEARCH | US4043706 |
| SEARCH | US5552653 |
| SEARCH | WO03103114 |
| SEARCH | WO2008019818 |
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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Mar 27, 2025
Mar 27, 2025
Jan 2, 2025
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Means of redress
OPPO
Dec 20, 2024
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May 16, 2023
Apr 6, 2023
Decision to grant a European patent
Search/Exam
Feb 13, 2023
(Electronic) Receipt
Search/Exam
Feb 13, 2023
English translation of the claims
Search/Exam
Feb 13, 2023
Filing of the translations of the claims
Search/Exam
Feb 13, 2023
French translation of claims
Search/Exam
Feb 13, 2023
Letter accompanying subsequently filed items
Search/Exam
Oct 5, 2022
Oct 5, 2022
Oct 5, 2022
Oct 5, 2022
Intention to grant (signatures)
Search/Exam
Oct 5, 2022
Text intended for grant (clean copy)
Search/Exam
Oct 5, 2022
Aug 4, 2021
(Electronic) Receipt
Search/Exam
Aug 4, 2021
Amended claims with annotations
Search/Exam
Aug 4, 2021
Amended description with annotations
Search/Exam
Aug 4, 2021
Claims
Search/Exam
Aug 4, 2021
Description
Search/Exam
Aug 4, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 4, 2021
Jun 17, 2021
Annex to the communication
Search/Exam
Jun 17, 2021
Jun 17, 2021
Jan 27, 2020
(Electronic) Receipt
Search/Exam
Jan 27, 2020
Amended claims with annotations
Search/Exam
Jan 27, 2020
Claims
Search/Exam
Jan 27, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 27, 2020
Dec 10, 2019
Dec 5, 2019
(Electronic) Receipt
Search/Exam
Dec 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 5, 2019
Jul 29, 2019
Annex to the communication
Search/Exam
Jul 29, 2019
Communication from the Examining Division
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Jul 18, 2019
Examination started
Search/Exam
Apr 16, 2019
Feb 26, 2019
Jan 22, 2019
Submission concerning representation
Search/Exam
Jan 17, 2019
Jan 17, 2019
Submission concerning representation
Search/Exam
Nov 27, 2017
(Electronic) Receipt
Search/Exam
Nov 27, 2017
Letter accompanying subsequently filed items
Search/Exam
Nov 27, 2017
Priority search results
Search/Exam
Nov 27, 2017
Priority search results
Search/Exam
Nov 27, 2017
Priority search results
Search/Exam
Nov 27, 2017
Nov 15, 2017
Nov 15, 2017
Refund order of filing/examination fee
Search/Exam
Nov 3, 2017
(Electronic) Receipt
Search/Exam
Nov 3, 2017
Nov 3, 2017
Amended claims with annotations
Search/Exam
Nov 3, 2017
Nov 3, 2017
Amended description with annotations
Search/Exam
Nov 3, 2017
Nov 3, 2017
Amendments received before examination
Search/Exam
Nov 3, 2017
Letter accompanying subsequently filed items
Search/Exam
May 9, 2017
Mar 30, 2017
Mar 30, 2017
European search opinion
Search/Exam
Mar 30, 2017
European search report
Search/Exam
Mar 30, 2017
Information on Search Strategy
Search/Exam
Mar 21, 2017
Search started
Search/Exam
Mar 7, 2017
Payment of fees and costs
Search/Exam
Mar 2, 2016
Payment of fees and costs
Search/Exam
Mar 4, 2015
Payment of fees and costs
Search/Exam
Apr 18, 2012
Notification of forthcoming publication
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Nov 4, 2011
Designation of inventor
Search/Exam
Nov 4, 2011
Letter concerning the inventor
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May 25, 2011
Letter concerning the priority
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May 25, 2011
Priority document
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May 25, 2011
Priority document
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Apr 6, 2011
Deficiency in designation of inventor
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Mar 16, 2011
Abstract
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Mar 16, 2011
Claims
Search/Exam
Mar 16, 2011
Description
Search/Exam
Mar 16, 2011
Drawings
Search/Exam
Mar 16, 2011
Request for grant of a European patent
Search/Exam
Mar 15, 2011
Abstract
Search/Exam
Mar 15, 2011
Annex
Search/Exam
Mar 15, 2011
Claims
Search/Exam
Mar 15, 2011
Description
Search/Exam
Mar 15, 2011
Drawings
Search/Exam
Mar 15, 2011
Mar 15, 2011
Request for grant of a European patent
Search/Exam