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The patent EP2801144 was granted to Siemens on Nov 7, 2018. The application was filed on Feb 27, 2013 under application number EP13707350A. 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 |
|---|---|---|---|
| ABB POWER GRIDS SWITZERLAND | Jul 30, 2019 | EPPING HERMANN FISCHER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | DD251057 |
| EXAMINATION | WO2006079744 |
| INTERNATIONAL-SEARCH-REPORT | EP0923181 |
| INTERNATIONAL-SEARCH-REPORT | US2009237195 |
| INTERNATIONAL-SEARCH-REPORT | WO2009105734 |
| OPPOSITION | EP0114648 |
| OPPOSITION | EP1315180 |
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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Description
OPPO
Aug 26, 2021
Description
OPPO
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Nov 19, 2018
Oct 11, 2018
Decision to grant a European patent
Search/Exam
Oct 1, 2018
Sep 27, 2018
(Electronic) Receipt
Search/Exam
Sep 27, 2018
English translation of the claims
Search/Exam
Sep 27, 2018
French translation of claims
Search/Exam
Sep 27, 2018
Letter accompanying subsequently filed items
Search/Exam
Sep 17, 2018
Annexes in respect of a client data request
Search/Exam
Sep 17, 2018
Aug 23, 2018
Annexes in respect of a client data request
Search/Exam
Aug 23, 2018
Jul 2, 2018
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Intention to grant (signatures)
Search/Exam
Jul 2, 2018
Text intended for grant (clean copy)
Search/Exam
Jul 2, 2018
Jul 31, 2017
Jul 24, 2017
Mar 28, 2017
(Electronic) Receipt
Search/Exam
Mar 28, 2017
Amended claims with annotations
Search/Exam
Mar 28, 2017
Claims
Search/Exam
Mar 28, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 28, 2017
Feb 1, 2017
Jan 27, 2017
(Electronic) Receipt
Search/Exam
Jan 27, 2017
Letter accompanying subsequently filed items
Search/Exam
Jan 27, 2017
Sep 19, 2016
Annex to the communication
Search/Exam
Sep 19, 2016
Communication from the Examining Division
Search/Exam
Sep 13, 2016
Examination started
Search/Exam
Apr 16, 2015
(Electronic) Receipt
Search/Exam
Apr 16, 2015
Letter accompanying subsequently filed items
Search/Exam
Apr 16, 2015
Reply to Written Opinion prepared by the EPO
Search/Exam
Oct 15, 2014
Oct 10, 2014
Oct 6, 2014
Communication to designated inventor
Search/Exam
Oct 6, 2014
Communication to designated inventor
Search/Exam
Oct 6, 2014
Communication to designated inventor
Search/Exam
Sep 16, 2014
Aug 5, 2014
(Electronic) Receipt
Search/Exam
Aug 5, 2014
Priority search results
Search/Exam
Aug 5, 2014
Request for entry into the European phase
Search/Exam
Jul 11, 2014
Information on entry into European phase
Search/Exam
Sep 24, 2013
Sep 6, 2013
Copy of the international search report
Search/Exam
Sep 6, 2013
Copy of the international search report
Search/Exam
Sep 6, 2013
Sep 6, 2013
Published international application - A1
Search/Exam
May 30, 2013
May 30, 2013
May 30, 2013
Feb 27, 2013
(Electronic) Receipt
PCTRO
Feb 27, 2013
Abstract
PCTRO
Feb 27, 2013
Claims
PCTRO
Feb 27, 2013
Description
PCTRO
Feb 27, 2013
Drawings
PCTRO