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The patent EP3536640 was granted to Winkel on Nov 17, 2021. The application was filed on Feb 11, 2019 under application number EP19156451A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| PATENTWERK | Aug 16, 2022 | PATENTWERK | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE102012022454 |
| OPPOSITION | DE102014220046 |
| OPPOSITION | DE202016001581U |
| OPPOSITION | EP3241789 |
| OPPOSITION | NL1018885C |
| OPPOSITION | US8074431 |
| OPPOSITION | WO2007133079 |
| OPPOSITION | WO2007133080 |
| OPPOSITION | WO2013038102 |
| SEARCH | DE102012022454 |
| SEARCH | DE102014220046 |
| SEARCH | DE202016001581U |
| SEARCH | NL1018885C |
| SEARCH | US8074431 |
| SEARCH | WO2013038102 |
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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Nov 30, 2021
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Decision to grant a European patent
Search/Exam
Oct 11, 2021
(Electronic) Receipt
Search/Exam
Oct 11, 2021
English translation of the claims
Search/Exam
Oct 11, 2021
Filing of the translations of the claims
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Oct 11, 2021
French translation of claims
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Oct 11, 2021
Letter accompanying subsequently filed items
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Jun 17, 2021
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Intention to grant (signatures)
Search/Exam
Jun 17, 2021
Text intended for grant (clean copy)
Search/Exam
Jun 17, 2021
May 3, 2021
Examination started
Search/Exam
Dec 6, 2019
(Electronic) Receipt
Search/Exam
Dec 6, 2019
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Amended claims with annotations
Search/Exam
Dec 6, 2019
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Amended description with annotations
Search/Exam
Dec 6, 2019
Amendments received before examination
Search/Exam
Dec 6, 2019
Letter accompanying subsequently filed items
Search/Exam
Sep 16, 2019
Aug 14, 2019
Notification of forthcoming publication
Search/Exam
Aug 8, 2019
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European search opinion
Search/Exam
Aug 8, 2019
European search report
Search/Exam
Aug 8, 2019
Information on Search Strategy
Search/Exam
Jul 29, 2019
Search started
Search/Exam
Apr 5, 2019
Communication to designated inventor
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Apr 5, 2019
Communication to designated inventor
Search/Exam
Feb 27, 2019
Letter concerning the priority
Search/Exam
Feb 27, 2019
Priority document
Search/Exam
Feb 11, 2019
Abstract
Search/Exam
Feb 11, 2019
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Claims
Search/Exam
Feb 11, 2019
Description
Search/Exam
Feb 11, 2019
Designation of inventor
Search/Exam
Feb 11, 2019
Drawings
Search/Exam
Feb 11, 2019
Priority search results
Search/Exam
Feb 11, 2019
Request for grant of a European patent
Search/Exam