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The patent EP3743636 was granted to Knorr Bremse Systeme FR Nutzfahrzeuge on Oct 22, 2025. The application was filed on Jan 21, 2019 under application number EP19702537A. 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 |
|---|---|---|---|
| VRI PATENT MONITORING ASSOCIATION | Oct 17, 2023 | IPSILON BENELUX | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102011113526 |
| DESCRIPTION | DE102012108672 |
| DESCRIPTION | DE4231107 |
| DESCRIPTION | EP1645771 |
| INTERNATIONAL-SEARCH-REPORT | CN106641031 |
| INTERNATIONAL-SEARCH-REPORT | DE102014105561 |
| INTERNATIONAL-SEARCH-REPORT | DE4231107 |
| INTERNATIONAL-SEARCH-REPORT | US6302241 |
| INTERNATIONAL-SEARCH-REPORT | US8739938 |
| OPPOSITION | CN206449142U |
| OPPOSITION | DE4231107 |
| OPPOSITION | JPH109307 |
| OPPOSITION | US2006254868 |
| OPPOSITION | US2013192933 |
| OPPOSITION | US6250429 |
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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OPPO
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Search/Exam
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Decision to grant a European patent
Search/Exam
Dec 2, 2022
English translation of the claims
Search/Exam
Dec 2, 2022
Filing of the translations of the claims
Search/Exam
Dec 2, 2022
French translation of claims
Search/Exam
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Intention to grant (signatures)
Search/Exam
Sep 7, 2022
Text intended for grant (clean copy)
Search/Exam
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Examination started
Search/Exam
Jun 14, 2021
(Electronic) Receipt
Search/Exam
Jun 14, 2021
Priority search results
Search/Exam
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Amended claims with annotations
Search/Exam
Mar 8, 2021
Amendments received before examination
Search/Exam
Nov 4, 2020
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Communication to designated inventor
Search/Exam
Oct 14, 2020
(Electronic) Receipt
Search/Exam
Oct 14, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 7, 2020
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Letter which had not been notified
Search/Exam
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
Search/Exam
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Information regarding early processing
Search/Exam
Jul 2, 2020
(Electronic) Receipt
Search/Exam
Jul 2, 2020
Request for entry into the European phase
Search/Exam
Jun 5, 2020
Information on entry into European phase
Search/Exam
Aug 19, 2019
Aug 1, 2019
Copy of the international search report
Search/Exam
Aug 1, 2019
Copy of the international search report
Search/Exam
Aug 1, 2019
Published international application - A1
Search/Exam
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(Electronic) Receipt
PCTRO
Jan 21, 2019
Abstract
PCTRO
Jan 21, 2019
Claims
PCTRO
Jan 21, 2019
Description
PCTRO
Jan 21, 2019
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Drawings
PCTRO
Jan 21, 2019