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The patent EP2923821 was granted to Sogefi Engine Systems USA on Aug 7, 2019. The application was filed on Mar 26, 2015 under application number EP15161007A. 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 |
|---|---|---|---|
| BIELOMATIK | May 7, 2020 | DTS PATENT UND RECHTSANWALTE PARTMBB | ADMISSIBLE |
| KLN ULTRASCHALL | May 7, 2020 | HABERMANN PARTNERSCHAFT VON PATENTANWALTEN MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE102005024983 |
| OPPOSITION | DE102006058997 |
| OPPOSITION | DE102008042663 |
| OPPOSITION | DE19925203 |
| OPPOSITION | DE202004011497U |
| OPPOSITION | EP0159169 |
| OPPOSITION | EP1297944 |
| OPPOSITION | EP1306404 |
| OPPOSITION | EP1758729 |
| OPPOSITION | EP2548715 |
| OPPOSITION | JP2012091400 |
| OPPOSITION | US2003141009 |
| OPPOSITION | US2010301522 |
| OPPOSITION | US5151149 |
| OPPOSITION | US7343218 |
| OPPOSITION | WO02057353 |
| OPPOSITION | WO03063940 |
| OPPOSITION | WO2009066232 |
| OPPOSITION | WO2011018513 |
| OPPOSITION | WO9526869 |
| SEARCH | DE102005024983 |
| SEARCH | DE102006058997 |
| SEARCH | DE102008042663 |
| SEARCH | DE202004011497U |
| SEARCH | JP2012091400 |
| SEARCH | US2003141009 |
| SEARCH | WO03063940 |
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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Means of redress
OPPO
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Aug 19, 2019
Jul 11, 2019
Decision to grant a European patent
Search/Exam
Jun 27, 2019
(Electronic) Receipt
Search/Exam
Jun 27, 2019
French translation of claims
Search/Exam
Jun 27, 2019
German translation of the claims
Search/Exam
Jun 27, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 25, 2019
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Feb 25, 2019
Intention to grant (signatures)
Search/Exam
Feb 25, 2019
Text intended for grant (clean copy)
Search/Exam
Feb 25, 2019
Sep 20, 2018
(Electronic) Receipt
Search/Exam
Sep 20, 2018
Amended claims with annotations
Search/Exam
Sep 20, 2018
Claims
Search/Exam
Sep 20, 2018
Letter accompanying subsequently filed items
Search/Exam
Sep 20, 2018
Jul 20, 2018
Jul 17, 2018
(Electronic) Receipt
Search/Exam
Jul 17, 2018
Mar 23, 2018
Annex to the communication
Search/Exam
Mar 23, 2018
Communication from the Examining Division
Search/Exam
Feb 8, 2018
(Electronic) Receipt
Search/Exam
Feb 8, 2018
Amended claims with annotations
Search/Exam
Feb 8, 2018
Claims
Search/Exam
Feb 8, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 8, 2018
Sep 28, 2017
Annex to the communication
Search/Exam
Sep 28, 2017
Communication from the Examining Division
Search/Exam
Sep 20, 2017
Examination started
Search/Exam
Apr 15, 2016
Mar 24, 2016
(Electronic) Receipt
Search/Exam
Mar 24, 2016
Mar 24, 2016
Amended claims with annotations
Search/Exam
Mar 24, 2016
Mar 24, 2016
Amended description with annotations
Search/Exam
Mar 24, 2016
Amendments received before examination
Search/Exam
Mar 24, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 15, 2016
Oct 5, 2015
Sep 2, 2015
Notification of forthcoming publication
Search/Exam
Aug 3, 2015
Aug 3, 2015
European search opinion
Search/Exam
Aug 3, 2015
European search report
Search/Exam
Jul 27, 2015
Modified abstract
Search/Exam
Jul 23, 2015
Search started
Search/Exam
May 19, 2015
Communication to designated inventor
Search/Exam
May 19, 2015
Communication to designated inventor
Search/Exam
May 19, 2015
Communication to designated inventor
Search/Exam
Apr 16, 2015
Letter concerning the priority
Search/Exam
Apr 16, 2015
Priority document
Search/Exam
Mar 26, 2015
Abstract
Search/Exam
Mar 26, 2015
Mar 26, 2015
Claims
Search/Exam
Mar 26, 2015
Description
Search/Exam
Mar 26, 2015
Designation of inventor
Search/Exam
Mar 26, 2015
Drawings
Search/Exam
Mar 26, 2015
Request for grant of a European patent
Search/Exam