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The patent EP3137253 was granted to Liburdi Engineering on Dec 12, 2018. The application was filed on Oct 21, 2014 under application number EP14891039A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| SIEMENS | Jul 30, 2019 | PAUL & ALBRECHT PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | WO2012135093 |
| INTERNATIONAL-SEARCH-REPORT | WO2014085892 |
| OPPOSITION | CN103540928 |
| OPPOSITION | EP0068284 |
| OPPOSITION | JPS58159993 |
| OPPOSITION | JPS59100248 |
| OPPOSITION | US2012267420 |
| OPPOSITION | WO2014063222 |
| SEARCH | GB2039950 |
| SEARCH | GB2052557 |
| SEARCH | JPH08337850 |
| SEARCH | US3228095 |
| SEARCH | US3632319 |
| SEARCH | US3918964 |
| SEARCH | US4093454 |
| SEARCH | USRE29920E |
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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Authorisation
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Jan 2, 2019
Nov 15, 2018
Decision to grant a European patent
Search/Exam
Sep 28, 2018
(Electronic) Receipt
Search/Exam
Sep 28, 2018
Filing of the translations of the claims
Search/Exam
Sep 28, 2018
French translation of claims
Search/Exam
Sep 28, 2018
German translation of the claims
Search/Exam
Sep 28, 2018
Letter accompanying subsequently filed items
Search/Exam
May 28, 2018
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Intention to grant (signatures)
Search/Exam
May 28, 2018
Text intended for grant (clean copy)
Search/Exam
May 28, 2018
Apr 20, 2018
Examination started
Search/Exam
Mar 12, 2018
(Electronic) Receipt
Search/Exam
Mar 12, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 12, 2018
Maintenance of the application
Search/Exam
Sep 22, 2017
Sep 6, 2017
Sep 6, 2017
European search opinion
Search/Exam
Sep 6, 2017
Information on Search Strategy
Search/Exam
Sep 6, 2017
Supplementary European search report
Search/Exam
Aug 29, 2017
Search started
Search/Exam
Feb 8, 2017
Dec 14, 2016
Dec 2, 2016
Communication to designated inventor
Search/Exam
Dec 2, 2016
Communication to designated inventor
Search/Exam
Dec 2, 2016
Communication to designated inventor
Search/Exam
Nov 16, 2016
(Electronic) Receipt
Search/Exam
Nov 16, 2016
Request for entry into the European phase
Search/Exam
Nov 15, 2016
Sep 9, 2016
Information on entry into European phase
Search/Exam
Nov 23, 2015
Nov 5, 2015
Copy of the international search report
Search/Exam
Nov 5, 2015
Published international application - A1
Search/Exam