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The patent EP3575473 was granted to Herbert Kannegiesser on Mar 10, 2021. The application was filed on May 17, 2019 under application number EP19175143A. 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 | Dec 10, 2021 | GROSSE SCHUMACHER KNAUER VON HIRSCHHAUSEN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE102007036800 |
| OPPOSITION | DE19529787 |
| OPPOSITION | DE19740266 |
| OPPOSITION | DE2810935 |
| OPPOSITION | DE2818286 |
| OPPOSITION | US5272893 |
| OPPOSITION | WO2012026821 |
| SEARCH | DE19529787 |
| SEARCH | DE2810935 |
| SEARCH | DE2818286 |
| SEARCH | WO2012026821 |
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.
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Decision to grant a European patent
Search/Exam
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English translation of the claims
Search/Exam
Jan 28, 2021
Filing of the translations of the claims
Search/Exam
Jan 28, 2021
French translation of claims
Search/Exam
Oct 12, 2020
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Intention to grant (signatures)
Search/Exam
Oct 12, 2020
Text intended for grant (clean copy)
Search/Exam
Oct 12, 2020
Sep 3, 2020
Examination started
Search/Exam
Jun 5, 2020
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Amended claims with annotations
Search/Exam
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Amended description with annotations
Search/Exam
Jun 5, 2020
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Search/Exam
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Amended claims with annotations
Search/Exam
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Amended description with annotations
Search/Exam
Jun 3, 2020
Amendments received before examination
Search/Exam
Jun 3, 2020
Dec 9, 2019
Nov 6, 2019
Notification of forthcoming publication
Search/Exam
Jul 29, 2019
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European search opinion
Search/Exam
Jul 29, 2019
European search report
Search/Exam
Jul 29, 2019
Information on Search Strategy
Search/Exam
Jul 10, 2019
Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
Jul 10, 2019
Communication to designated inventor
Search/Exam
Jul 4, 2019
Letter concerning the priority
Search/Exam
Jul 4, 2019
Priority document
Search/Exam
May 17, 2019
Abstract
Search/Exam
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Claims
Search/Exam
May 17, 2019
Description
Search/Exam
May 17, 2019
Designation of inventor
Search/Exam
May 17, 2019
Drawings
Search/Exam
May 17, 2019
Request for grant of a European patent
Search/Exam