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The patent EP3432395 was granted to Osaka GAS on Apr 12, 2023. The application was filed on Mar 16, 2017 under application number EP17766790A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| CERES POWER | Jan 5, 2024 | HASELTINE LAKE KEMPNER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2012038696 |
| INTERNATIONAL-SEARCH-REPORT | JP2004303508 |
| INTERNATIONAL-SEARCH-REPORT | JP2013077450 |
| INTERNATIONAL-SEARCH-REPORT | JP2014232678 |
| INTERNATIONAL-SEARCH-REPORT | JP2015167128 |
| INTERNATIONAL-SEARCH-REPORT | JP2016033874 |
| OPPOSITION | GB2420440 |
| OPPOSITION | WO2007085863 |
| OPPOSITION | WO2008015461 |
| OPPOSITION | WO2008053213 |
| OPPOSITION | WO2015033103 |
| SEARCH | GB2524643 |
| SEARCH | US2011269047 |
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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Description
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Mar 16, 2023
Decision to grant a European patent
Search/Exam
Mar 2, 2023
(Electronic) Receipt
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Mar 2, 2023
Filing of the translations of the claims
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Mar 2, 2023
French translation of claims
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Mar 2, 2023
German translation of the claims
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Intention to grant (signatures)
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Dec 20, 2022
Text intended for grant (clean copy)
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Nov 25, 2022
Examination started
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Jul 8, 2020
(Electronic) Receipt
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Jul 8, 2020
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Amended claims with annotations
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Amended description with annotations
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Jul 8, 2020
Amendments received before examination
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Jul 8, 2020
Letter accompanying subsequently filed items
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Jan 3, 2020
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European search opinion
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Dec 4, 2019
Information on Search Strategy
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Dec 4, 2019
Supplementary European search report
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Oct 14, 2019
Search started
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Jan 4, 2019
Notification of forthcoming publication
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Nov 5, 2018
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Oct 10, 2018
(Electronic) Receipt
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Oct 10, 2018
Abstract
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Oct 10, 2018
Claims
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Oct 10, 2018
Description
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Oct 10, 2018
Drawings
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Oct 10, 2018
Request for entry into the European phase
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Oct 3, 2018
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Jul 25, 2018
Information on entry into European phase
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Oct 10, 2017
Sep 21, 2017
Copy of the international search report
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Sep 21, 2017
Sep 21, 2017
International publication pamphlet
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