The patent EP3358026 was granted to Hitachi Metals on Dec 4, 2024. The application was originally filed on Feb 29, 2016 under application number EP16850700A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text | Link |
|---|---|---|
| OPPOSITION | - Analysebericht BOG | - |
| OPPOSITION | - eidesstattliche Versicherung, Jürgen Kalb 23.11.2023 | - |
| OPPOSITION | - Eidesstattliche Versicherung von Jürgen Kalb | - |
| OPPOSITION | - Erlauterungsschreiben zum Analysebericht | - |
| OPPOSITION | - "Gusseisen mit Kugelgraphit", Wikipedia, (20150729), XP055913979 | - |
| OPPOSITION | - Lieferschein | - |
| OPPOSITION | - Rechnung | - |
| OPPOSITION | - Tabelle Jahresmittelwerte Zusammensetzung EN-GJS-500-7 | - |
| OPPOSITION | - Werksbescheinigung GMG | - |
| OPPOSITION | - Werkstoffdatenblatt EN-GJS-5OO- 7 | - |
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Description
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Nov 7, 2024
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OPPO
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May 7, 2021
Decision to grant a European patent
Search/Exam
Apr 29, 2021
Apr 14, 2021
(Electronic) Receipt
Search/Exam
Apr 14, 2021
Filing of the translations of the claims
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Apr 14, 2021
French translation of claims
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Apr 14, 2021
German translation of the claims
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Apr 14, 2021
Letter accompanying subsequently filed items
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Jan 15, 2021
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Intention to grant (signatures)
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Jan 15, 2021
Text intended for grant (clean copy)
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Jan 15, 2021
Dec 15, 2020
Examination started
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Sep 3, 2019
(Electronic) Receipt
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Sep 3, 2019
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Amended claims with annotations
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Sep 3, 2019
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Amended description with annotations
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Sep 3, 2019
Amendments received before examination
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Sep 3, 2019
Letter accompanying subsequently filed items
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Apr 5, 2019
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European search opinion
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Mar 19, 2019
Information on Search Strategy
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Mar 19, 2019
Supplementary European search report
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Mar 11, 2019
Search started
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Jul 11, 2018
Notification of forthcoming publication
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Jun 20, 2018
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Communication to designated inventor
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May 4, 2018
Communication to designated inventor
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Apr 26, 2018
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(Electronic) Receipt
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Apr 3, 2018
Abstract
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Apr 3, 2018
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Amended claims with annotations
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Apr 3, 2018
Claims
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Apr 3, 2018
Description
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Apr 3, 2018
Drawings
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Apr 3, 2018
Request for entry into the European phase
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Feb 9, 2018
Information on entry into European phase
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Apr 25, 2017
Apr 6, 2017
Copy of the international search report
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Apr 6, 2017
Apr 6, 2017
International publication pamphlet
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