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The patent EP2933321 was granted to Kyodo Yushi on Feb 13, 2019. The application was filed on Dec 16, 2013 under application number EP13862677A. 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 |
|---|---|---|---|
| KLUBER LUBRICATION MUNCHEN | Nov 13, 2019 | STOLMAR & PARTNER | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2008239687 |
| INTERNATIONAL-SEARCH-REPORT | JP2007177040 |
| INTERNATIONAL-SEARCH-REPORT | JP2008143927 |
| INTERNATIONAL-SEARCH-REPORT | JP2008144808 |
| INTERNATIONAL-SEARCH-REPORT | JPH05140556 |
| INTERNATIONAL-SEARCH-REPORT | US4514312 |
| INTERNATIONAL-SEARCH-REPORT | WO2010001784 |
| OPPOSITION | DE19730318 |
| OPPOSITION | EP1500694 |
| OPPOSITION | EP2348094 |
| OPPOSITION | EP2540813 |
| OPPOSITION | JP2008144808 |
| OPPOSITION | JP2008274140 |
| OPPOSITION | US4514312 |
| OPPOSITION | WO2011105601 |
| OPPOSITION | WO2014092201 |
| SEARCH | EP1847586 |
| SEARCH | EP2465916 |
| SEARCH | JP2008274140 |
| SEARCH | US2824068 |
| SEARCH | WO2012029940 |
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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Sep 14, 2021
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Letter accompanying subsequently filed items
Search/Exam
Apr 21, 2021
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Jan 17, 2019
Decision to grant a European patent
Search/Exam
Dec 20, 2018
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Intention to grant (signatures)
Search/Exam
Nov 26, 2018
Text intended for grant (clean copy)
Search/Exam
Nov 26, 2018
Oct 17, 2018
(Electronic) Receipt
Search/Exam
Oct 17, 2018
Description
Search/Exam
Oct 17, 2018
French translation of claims
Search/Exam
Oct 17, 2018
German translation of the claims
Search/Exam
Oct 17, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 17, 2018
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Intention to grant (signatures)
Search/Exam
Jul 9, 2018
Text intended for grant (clean copy)
Search/Exam
Jul 9, 2018
May 8, 2018
(Electronic) Receipt
Search/Exam
May 8, 2018
Amended claims with annotations
Search/Exam
May 8, 2018
Amended claims with annotations
Search/Exam
May 8, 2018
Claims
Search/Exam
May 8, 2018
Claims
Search/Exam
May 8, 2018
Description
Search/Exam
May 8, 2018
Description
Search/Exam
May 8, 2018
Letter accompanying subsequently filed items
Search/Exam
May 8, 2018
Jan 11, 2018
Annex to the communication
Search/Exam
Jan 11, 2018
Communication from the Examining Division
Search/Exam
Nov 2, 2017
(Electronic) Receipt
Search/Exam
Nov 2, 2017
Amended claims with annotations
Search/Exam
Nov 2, 2017
Claims
Search/Exam
Nov 2, 2017
Letter accompanying subsequently filed items
Search/Exam
Nov 2, 2017
Sep 7, 2017
Aug 31, 2017
(Electronic) Receipt
Search/Exam
Aug 31, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 31, 2017
Apr 24, 2017
Annex to the communication
Search/Exam
Apr 24, 2017
Communication from the Examining Division
Search/Exam
Apr 13, 2017
Examination started
Search/Exam
Dec 16, 2016
(Electronic) Receipt
Search/Exam
Dec 16, 2016
Dec 16, 2016
Amended claims with annotations
Search/Exam
Dec 16, 2016
Amendments received before examination
Search/Exam
Dec 16, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 16, 2016
Jun 10, 2016
May 24, 2016
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European search opinion
Search/Exam
May 24, 2016
Information on Search Strategy
Search/Exam
May 24, 2016
Supplementary European search report
Search/Exam
May 3, 2016
Search started
Search/Exam
Sep 23, 2015
Notification of forthcoming publication
Search/Exam
Jul 28, 2015
Jul 17, 2015
Communication to designated inventor
Search/Exam
Jun 29, 2015
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(Electronic) Receipt
Search/Exam
May 29, 2015
Abstract
Search/Exam
May 29, 2015
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Amended claims with annotations
Search/Exam
May 29, 2015
Amendments received before examination
Search/Exam
May 29, 2015
Claims
Search/Exam
May 29, 2015
Description
Search/Exam
May 29, 2015
Request for entry into the European phase
Search/Exam
May 29, 2015
Submission concerning representation
Search/Exam
Apr 24, 2015
Information on entry into European phase
Search/Exam
Jul 7, 2014
Jun 19, 2014
Copy of the international search report
Search/Exam
Jun 19, 2014
Jun 19, 2014
International publication pamphlet
Search/Exam