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The patent EP3176807 was granted to Kabushiki Kaisha Toshiba on Oct 21, 2020. The application was originally filed on Jul 29, 2015 under application number EP15828014A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2010212088 |
| INTERNATIONAL-SEARCH-REPORT | JP2012532409 |
| INTERNATIONAL-SEARCH-REPORT | JP2013502034 |
| INTERNATIONAL-SEARCH-REPORT | JPH0574392 |
| INTERNATIONAL-SEARCH-REPORT | WO2007049761 |
| OPPOSITION | DE19647370 |
| OPPOSITION | DE19906854 |
| OPPOSITION | DE2425082 |
| OPPOSITION | EP1860204 |
| OPPOSITION | EP1953254 |
| OPPOSITION | EP2505682 |
| OPPOSITION | EP3176807 |
| OPPOSITION | JPH10244363 |
| OPPOSITION | US2628926 |
| OPPOSITION | US3694685 |
| OPPOSITION | US4978051 |
| OPPOSITION | US5547410 |
| OPPOSITION | WO2004095501 |
| SEARCH | US6487275 |
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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Decision to grant a European patent
Search/Exam
Sep 9, 2020
(Electronic) Receipt
Search/Exam
Sep 9, 2020
Filing of the translations of the claims
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Sep 9, 2020
French translation of claims
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Sep 9, 2020
German translation of the claims
Search/Exam
Sep 9, 2020
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
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May 14, 2020
Text intended for grant (clean copy)
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May 14, 2020
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(Electronic) Receipt
Search/Exam
Dec 13, 2019
Amended claims with annotations
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Dec 13, 2019
Claims
Search/Exam
Dec 13, 2019
Letter accompanying subsequently filed items
Search/Exam
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Annex to the communication
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Aug 14, 2019
Communication from the Examining Division
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Jul 15, 2019
(Electronic) Receipt
Search/Exam
Jul 15, 2019
Amended claims with annotations
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Jul 15, 2019
Claims
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Jul 15, 2019
Letter accompanying subsequently filed items
Search/Exam
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Annex to the communication
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Mar 5, 2019
Communication from the Examining Division
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Sep 11, 2018
(Electronic) Receipt
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Amended claims with annotations
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Amended description with annotations
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Amendments received before examination
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Sep 11, 2018
Letter accompanying subsequently filed items
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Mar 2, 2018
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European search opinion
Search/Exam
Feb 13, 2018
Information on Search Strategy
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Feb 13, 2018
Supplementary European search report
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Sep 6, 2017
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Amended claims with annotations
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Sep 6, 2017
Amendments received before examination
Search/Exam
Sep 6, 2017
Letter accompanying subsequently filed items
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May 10, 2017
Notification of forthcoming publication
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Mar 7, 2017
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Communication to designated inventor
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Feb 15, 2017
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(Electronic) Receipt
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Jan 13, 2017
Abstract
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Jan 13, 2017
Claims
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Jan 13, 2017
Description
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Jan 13, 2017
Drawings
Search/Exam
Jan 13, 2017
Request for entry into the European phase
Search/Exam
Dec 9, 2016
Information on entry into European phase
Search/Exam
Feb 22, 2016
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Copy of the international search report
Search/Exam
Feb 4, 2016
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International publication pamphlet
Search/Exam