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The patent EP3633260 was granted to Kummert on Aug 13, 2025. The application was filed on Jan 29, 2019 under application number EP19154097A. 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 |
|---|---|---|---|
| IBAK HELMUT HUNGER | Mar 16, 2022 | PATENTANWALTE HEMMER LINDFELD FRESE PARTNERSCHAFT MBB | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | DE102017105747 |
| EXAMINATION | DE202012007019U |
| OPPOSITION | DE102017105747 |
| OPPOSITION | DE4210895 |
| OPPOSITION | DE4229787 |
| OPPOSITION | EP3633260 |
| SEARCH | EP3106734 |
| SEARCH | US2007051192 |
| SEARCH | US2736949 |
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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Jul 17, 2025
Jul 17, 2025
Jul 8, 2025
Jul 8, 2025
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Jun 11, 2025
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May 14, 2025
Apr 30, 2025
Refund of fees
Appeal
Apr 30, 2025
Refund of fees
Appeal
Apr 28, 2025
Apr 28, 2025
Apr 28, 2025
Apr 28, 2025
Apr 23, 2025
Apr 17, 2025
(Electronic) Receipt
Appeal
Apr 17, 2025
(Electronic) Receipt
Appeal
Apr 17, 2025
Apr 17, 2025
Apr 17, 2025
Withdrawal of an appeal
Appeal
Apr 17, 2025
Withdrawal of an appeal
Appeal
Mar 21, 2025
Mar 21, 2025
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Jul 3, 2024
(Electronic) Receipt
Appeal
Jul 3, 2024
Jul 3, 2024
Reply to appeal
Appeal
Jun 24, 2024
Jun 19, 2024
(Electronic) Receipt
Appeal
Jun 19, 2024
Jun 19, 2024
Reply to appeal
Appeal
Apr 10, 2024
Mar 6, 2024
Mar 6, 2024
Mar 1, 2024
(Electronic) Receipt
Appeal
Mar 1, 2024
Mar 1, 2024
Mar 1, 2024
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Feb 27, 2024
(Electronic) Receipt
Appeal
Feb 27, 2024
Feb 27, 2024
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Jan 4, 2024
Dec 21, 2023
(Electronic) Receipt
Appeal
Dec 21, 2023
Dec 21, 2023
Notice of appeal
Appeal
Dec 18, 2023
Dec 7, 2023
(Electronic) Receipt
Appeal
Dec 7, 2023
Dec 7, 2023
Notice of appeal
Appeal
Nov 3, 2023
Nov 2, 2023
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Means of redress
OPPO
Nov 2, 2023
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Jul 13, 2021
Jun 16, 2021
Document concerning representation
Search/Exam
Jun 4, 2021
Decision to grant a European patent
Search/Exam
May 20, 2021
(Electronic) Receipt
Search/Exam
May 20, 2021
English translation of the claims
Search/Exam
May 20, 2021
Filing of the translations of the claims
Search/Exam
May 20, 2021
French translation of claims
Search/Exam
Jan 29, 2021
Jan 29, 2021
Jan 29, 2021
Intention to grant (signatures)
Search/Exam
Jan 29, 2021
Text intended for grant (clean copy)
Search/Exam
Jan 29, 2021
May 29, 2020
Amended claims with annotations
Search/Exam
May 29, 2020
Amended description with annotations
Search/Exam
May 29, 2020
Claims
Search/Exam
May 29, 2020
Description
Search/Exam
May 29, 2020
May 26, 2020
Amended claims with annotations
Search/Exam
May 26, 2020
Amended description with annotations
Search/Exam
May 26, 2020
Claims
Search/Exam
May 26, 2020
Description
Search/Exam
May 26, 2020
Apr 24, 2020
Annex to the communication
Search/Exam
Apr 24, 2020
Communication from the Examining Division
Search/Exam
Apr 20, 2020
Examination started
Search/Exam
Apr 20, 2020
Matter concerning the application
Search/Exam
Apr 15, 2020
Apr 15, 2020
Matter concerning the application
Search/Exam
Mar 11, 2020
Notification of forthcoming publication
Search/Exam
Feb 28, 2020
Priority search results
Search/Exam
Feb 28, 2020
Feb 26, 2020
Feb 26, 2020
Priority search results
Search/Exam
Feb 26, 2020
Jan 31, 2020
Jan 31, 2020
Amended claims with annotations
Search/Exam
Jan 31, 2020
Jan 31, 2020
Amended description with annotations
Search/Exam
Jan 31, 2020
Amendments received before examination
Search/Exam
Jan 29, 2020
Jan 29, 2020
Amended claims with annotations
Search/Exam
Jan 29, 2020
Jan 29, 2020
Amended description with annotations
Search/Exam
Jan 29, 2020
Amendments received before examination
Search/Exam
Jul 17, 2019
Jul 17, 2019
European search opinion
Search/Exam
Jul 17, 2019
European search report
Search/Exam
Jul 17, 2019
Information on Search Strategy
Search/Exam
Jun 18, 2019
Search started
Search/Exam
Apr 12, 2019
Communication to designated inventor
Search/Exam
Mar 15, 2019
Letter concerning the inventor
Search/Exam
Mar 8, 2019
Letter concerning the inventor
Search/Exam
Mar 5, 2019
Deficiency in designation of inventor
Search/Exam
Feb 22, 2019
Letter concerning the priority
Search/Exam
Feb 22, 2019
Priority document
Search/Exam
Jan 29, 2019
Abstract
Search/Exam
Jan 29, 2019
Jan 29, 2019
Claims
Search/Exam
Jan 29, 2019
Description
Search/Exam
Jan 29, 2019
Drawings
Search/Exam
Jan 29, 2019
Request for grant of a European patent
Search/Exam