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The patent EP3550163 was granted to Daido Metal on May 5, 2021. The application was filed on Mar 12, 2019 under application number EP19162305A. 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 |
|---|---|---|---|
| KS GLEITLAGER | Feb 7, 2022 | DREISS PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2002220631 |
| DESCRIPTION | JP2006022869 |
| DESCRIPTION | JPH06322462 |
| OPPOSITION | JPH0941033 |
| OPPOSITION | US2015267747 |
| OPPOSITION | US5429876 |
| SEARCH | EP2944708 |
| SEARCH | JP2002220631 |
| SEARCH | JP2015183236 |
| SEARCH | US2015267747 |
| SEARCH | US2016160824 |
| SEARCH | US5429876 |
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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May 19, 2021
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Decision to grant a European patent
Search/Exam
Mar 15, 2021
(Electronic) Receipt
Search/Exam
Mar 15, 2021
Filing of the translations of the claims
Search/Exam
Mar 15, 2021
French translation of claims
Search/Exam
Mar 15, 2021
German translation of the claims
Search/Exam
Mar 15, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 8, 2020
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Intention to grant (signatures)
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Dec 8, 2020
Text intended for grant (clean copy)
Search/Exam
Dec 8, 2020
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Annex to the communication
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Nov 4, 2020
Consultation by telephone/in person
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Nov 4, 2020
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Examination started
Search/Exam
Mar 5, 2020
Reply to Written Opinion prepared by the EPO
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Oct 14, 2019
Sep 11, 2019
Notification of forthcoming publication
Search/Exam
Sep 5, 2019
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European search opinion
Search/Exam
Sep 5, 2019
European search report
Search/Exam
Sep 5, 2019
Information on Search Strategy
Search/Exam
Aug 30, 2019
Modified abstract
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Aug 21, 2019
Search started
Search/Exam
May 23, 2019
May 14, 2019
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Communication to designated inventor
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Communication to designated inventor
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Mar 12, 2019
Abstract
Search/Exam
Mar 12, 2019
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Claims
OPPO
Mar 12, 2019
Description
Search/Exam
Mar 12, 2019
Designation of inventor
Search/Exam
Mar 12, 2019
Drawings
Search/Exam
Mar 12, 2019
Request for grant of a European patent
Search/Exam