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The patent EP3628563 was granted to Crrc Tangshan on Feb 9, 2022. The application was filed on Jun 29, 2018 under application number EP18879098A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| KNORR BREMSE SYSTEME FUR SCHIENENFAHRZEUGE | Nov 7, 2022 | PRUFER & PARTNER MBB PATENTANWALTE RECHTSANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN102114858 |
| INTERNATIONAL-SEARCH-REPORT | CN102602386 |
| INTERNATIONAL-SEARCH-REPORT | CN103625505 |
| INTERNATIONAL-SEARCH-REPORT | CN105452049 |
| INTERNATIONAL-SEARCH-REPORT | DE19738629 |
| INTERNATIONAL-SEARCH-REPORT | KR20010085141 |
| OPPOSITION | CN106240601 |
| OPPOSITION | DE102010023565 |
| OPPOSITION | DE102014102881 |
| OPPOSITION | DE102015110053 |
| OPPOSITION | DE102016005248 |
| OPPOSITION | DE102016103352 |
| OPPOSITION | EP1046564 |
| OPPOSITION | EP2705994 |
| OPPOSITION | US2013035811 |
| OPPOSITION | US2017240187 |
| OPPOSITION | WO2014190003 |
| SEARCH | CN102991536 |
| SEARCH | CN105438222 |
| SEARCH | EP1306283 |
| SEARCH | EP2476573 |
| SEARCH | EP3179674 |
| SEARCH | JP2005341784 |
| SEARCH | WO2004054840 |
| SEARCH | WO2014190003 |
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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Dec 5, 2025
Dec 2, 2025
Nov 28, 2025
Nov 28, 2025
Nov 27, 2025
Nov 25, 2025
Nov 24, 2025
(Electronic) Receipt
Appeal
Nov 24, 2025
Nov 24, 2025
Nov 24, 2025
Nov 21, 2025
Nov 21, 2025
Nov 18, 2025
Oct 13, 2025
Oct 6, 2025
Letter accompanying subsequently filed items
Search/Exam
Oct 6, 2025
Jun 1, 2025
Nov 29, 2024
Nov 26, 2024
(Electronic) Receipt
Appeal
Nov 26, 2024
Nov 26, 2024
Oct 10, 2024
Oct 10, 2024
Oct 2, 2024
(Electronic) Receipt
Appeal
Oct 2, 2024
Oct 2, 2024
Notice of appeal
Appeal
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Means of redress
OPPO
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Jun 26, 2024
Apr 29, 2024
Apr 29, 2024
Apr 23, 2024
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Nov 27, 2023
Nov 20, 2023
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Dec 6, 2022
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Nov 24, 2022
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Nov 14, 2022
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Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Nov 7, 2022
Mar 31, 2022
Payment submission rejected
Search/Exam
Feb 22, 2022
Jan 13, 2022
Decision to grant a European patent
Search/Exam
Dec 23, 2021
(Electronic) Receipt
Search/Exam
Dec 23, 2021
Filing of the translations of the claims
Search/Exam
Dec 23, 2021
French translation of claims
Search/Exam
Dec 23, 2021
German translation of the claims
Search/Exam
Oct 5, 2021
Oct 5, 2021
Oct 5, 2021
Intention to grant (signatures)
Search/Exam
Oct 5, 2021
Text intended for grant (clean copy)
Search/Exam
Oct 5, 2021
Jul 27, 2021
Examination started
Search/Exam
Apr 22, 2021
Apr 22, 2021
Amended claims with annotations
Search/Exam
Apr 22, 2021
Apr 22, 2021
Amended description with annotations
Search/Exam
Apr 22, 2021
Apr 22, 2021
Amendments received before examination
Search/Exam
Oct 29, 2020
Oct 12, 2020
Oct 12, 2020
European search opinion
Search/Exam
Oct 12, 2020
Information on Search Strategy
Search/Exam
Oct 12, 2020
Supplementary European search report
Search/Exam
Sep 28, 2020
Search started
Search/Exam
Apr 2, 2020
Apr 2, 2020
Jan 31, 2020
Jan 31, 2020
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Communication to designated inventor
Search/Exam
Jan 21, 2020
Jan 21, 2020
Enquiry with the International Bureau
Search/Exam
Dec 26, 2019
(Electronic) Receipt
Search/Exam
Dec 26, 2019
Abstract
Search/Exam
Dec 26, 2019
Dec 26, 2019
Amended claims with annotations
Search/Exam
Dec 26, 2019
Claims
Search/Exam
Dec 26, 2019
Dec 26, 2019
Description
Search/Exam
Dec 26, 2019
Drawings
Search/Exam
Dec 26, 2019
Priority search results
Search/Exam
Dec 26, 2019
Request for entry into the European phase
Search/Exam
Nov 14, 2019
Notification of the recording of a change
Search/Exam
Nov 14, 2019
Notification of the recording of a change
Search/Exam
Jun 11, 2019
May 23, 2019
Copy of the international search report
Search/Exam
May 23, 2019
May 23, 2019
International publication pamphlet
Search/Exam