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The patent EP3421659 was granted to Herbert Kannegiesser on Sep 9, 2020. The application was filed on Jun 6, 2018 under application number EP18000500A. 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 |
|---|---|---|---|
| JENSEN DENMARK | Jun 9, 2021 | ZACCO | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE102014017477 |
| OPPOSITION | EP0751251 |
| OPPOSITION | JP2010273732 |
| OPPOSITION | US2006191171 |
| OPPOSITION | US5595467 |
| OPPOSITION | WO2005049911 |
| OPPOSITION | WO9603540 |
| SEARCH | DE102014017477 |
| SEARCH | JP2010273732 |
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 31, 2025
Jul 31, 2025
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Jun 23, 2025
Amended claims with annotations
Search/Exam
Jun 23, 2025
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Letter accompanying subsequently filed items
Search/Exam
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Aug 24, 2023
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Notice of appeal
Appeal
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Means of redress
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Sep 21, 2020
Aug 13, 2020
Decision to grant a European patent
Search/Exam
Jul 30, 2020
English translation of the claims
Search/Exam
Jul 30, 2020
Filing of the translations of the claims
Search/Exam
Jul 30, 2020
French translation of claims
Search/Exam
Apr 16, 2020
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Apr 16, 2020
Intention to grant (signatures)
Search/Exam
Apr 16, 2020
Text intended for grant (clean copy)
Search/Exam
Apr 16, 2020
Apr 6, 2020
Annex to the communication
Search/Exam
Apr 6, 2020
Consultation by telephone/in person
Search/Exam
Apr 6, 2020
Dec 13, 2019
Claims
Search/Exam
Dec 13, 2019
Claims
Search/Exam
Dec 13, 2019
Dec 11, 2019
Amended claims with annotations
Search/Exam
Dec 11, 2019
Claims
Search/Exam
Dec 11, 2019
Aug 1, 2019
Annex to the communication
Search/Exam
Aug 1, 2019
Communication from the Examining Division
Search/Exam
Jul 9, 2019
Examination started
Search/Exam
Apr 9, 2019
Apr 9, 2019
Amended claims with annotations
Search/Exam
Apr 9, 2019
Apr 9, 2019
Amended description with annotations
Search/Exam
Apr 9, 2019
Amendments received before examination
Search/Exam
Apr 5, 2019
Letter concerning fees and payments
Search/Exam
Apr 4, 2019
Apr 4, 2019
Amended claims with annotations
Search/Exam
Apr 4, 2019
Apr 4, 2019
Amended description with annotations
Search/Exam
Apr 4, 2019
Amendments received before examination
Search/Exam
Jan 7, 2019
Dec 5, 2018
Notification of forthcoming publication
Search/Exam
Nov 22, 2018
Nov 22, 2018
European search opinion
Search/Exam
Nov 22, 2018
European search report
Search/Exam
Nov 22, 2018
Information on Search Strategy
Search/Exam
Nov 12, 2018
Search started
Search/Exam
Aug 3, 2018
Communication to designated inventor
Search/Exam
Aug 3, 2018
Communication to designated inventor
Search/Exam
Aug 3, 2018
Communication to designated inventor
Search/Exam
Jun 14, 2018
Letter concerning the priority
Search/Exam
Jun 14, 2018
Priority document
Search/Exam
Jun 8, 2018
Abstract
Search/Exam
Jun 8, 2018
Claims
Search/Exam
Jun 8, 2018
Description
Search/Exam
Jun 8, 2018
Designation of inventor
Search/Exam
Jun 8, 2018
Drawings
Search/Exam
Jun 8, 2018
Priority search results
Search/Exam
Jun 8, 2018
Request for grant of a European patent
Search/Exam
Jun 6, 2018
Designation of inventor
Search/Exam
Jun 6, 2018
Priority search results
Search/Exam
Jun 6, 2018
Request for grant of a European patent
Search/Exam
Jun 6, 2018
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Submission concerning representation
Search/Exam