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The patent EP2558726 was granted to Knorr Bremse Systeme FR Schienenfahrzeuge on Mar 29, 2023. The application was filed on Apr 13, 2011 under application number EP11716393A. 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 |
|---|---|---|---|
| BOGE KOMPRESSOREN OTTO BOGE | Jul 18, 2018 | HEILAND | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE1044122 |
| INTERNATIONAL-SEARCH-REPORT | DE7927054U |
| INTERNATIONAL-SEARCH-REPORT | EP0048095 |
| INTERNATIONAL-SEARCH-REPORT | US2005123415 |
| INTERNATIONAL-SEARCH-REPORT | WO2004053311 |
| OPPOSITION | CH456832 |
| OPPOSITION | CN101624984 |
| OPPOSITION | DE1044122 |
| OPPOSITION | DE1428026 |
| OPPOSITION | DE19716549 |
| OPPOSITION | DE19728434 |
| OPPOSITION | DE2434404 |
| OPPOSITION | DE7927054U |
| OPPOSITION | EP0048095 |
| OPPOSITION | EP1207306 |
| OPPOSITION | JP2005163713 |
| OPPOSITION | JP2005188326 |
| OPPOSITION | SU1321378 |
| OPPOSITION | US2002081150 |
| OPPOSITION | US2004202550 |
| OPPOSITION | US2005123415 |
| OPPOSITION | US2911549 |
| OPPOSITION | US3209990 |
| OPPOSITION | US3902827 |
| OPPOSITION | US3948919 |
| OPPOSITION | US5165872 |
| OPPOSITION | US6471494 |
| OPPOSITION | WO2004053311 |
| OPPOSITION | WO2008086991 |
| OPPOSITION | WO9715759 |
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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Description
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OPPO
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Authorisation
OPPO
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Authorisation
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Authorisation
OPPO
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Decision to grant a European patent
Search/Exam
Sep 1, 2017
English translation of the claims
Search/Exam
Sep 1, 2017
Filing of the translations of the claims
Search/Exam
Sep 1, 2017
French translation of claims
Search/Exam
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Intention to grant (signatures)
Search/Exam
Jun 9, 2017
Text intended for grant (clean copy)
Search/Exam
Jun 9, 2017
May 15, 2017
Examination started
Search/Exam
Apr 13, 2017
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Feb 1, 2016
(Electronic) Receipt
Search/Exam
Feb 1, 2016
Jul 30, 2014
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Amended claims with annotations
Search/Exam
Dec 6, 2013
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Amended description with annotations
Search/Exam
Dec 6, 2013
Amendments received before examination
Search/Exam
Nov 15, 2013
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Copy of the international search report
Search/Exam
May 2, 2013
Copy of the international search report
Search/Exam
May 2, 2013
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Communication to designated inventor
Search/Exam
Oct 11, 2012
Matter concerning the application
Search/Exam
Oct 11, 2012
Request for entry into the European phase
Search/Exam
Aug 24, 2012
Information on entry into European phase
Search/Exam
Nov 8, 2011
Oct 20, 2011
Published international application - A2
Search/Exam
Apr 13, 2011
(Electronic) Receipt
PCTRO
Apr 13, 2011
Abstract
PCTRO
Apr 13, 2011
Claims
PCTRO
Apr 13, 2011
Description
PCTRO
Apr 13, 2011
Drawings
PCTRO