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The patent EP3305450 was granted to Kanefusa Kabushiki Kaisha on Jan 11, 2023. The application was filed on Jul 28, 2016 under application number EP16839005A. 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 |
|---|---|---|---|
| WIKUS SAGENFABRIK WILHELM H KULLMANN | Oct 10, 2023 | REHBERG HUPPE PARTNER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2000052140 |
| INTERNATIONAL-SEARCH-REPORT | JP2008006530 |
| INTERNATIONAL-SEARCH-REPORT | JP2012056067 |
| INTERNATIONAL-SEARCH-REPORT | JPH049220U |
| INTERNATIONAL-SEARCH-REPORT | JPH058115 |
| INTERNATIONAL-SEARCH-REPORT | US2011318119 |
| INTERNATIONAL-SEARCH-REPORT | US4604933 |
| OPPOSITION | DE102008037407 |
| OPPOSITION | DE102013008014 |
| OPPOSITION | DE202004005773U |
| OPPOSITION | JP2000052140 |
| OPPOSITION | JP2008006530 |
| OPPOSITION | JP2012056067 |
| OPPOSITION | JPH049220U |
| OPPOSITION | JPH058115 |
| OPPOSITION | US2011318119 |
| OPPOSITION | US4604933 |
| OPPOSITION | WO2013017944 |
| SEARCH | DE102013008014 |
| SEARCH | DE202004005773U |
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
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Dec 2, 2022
(Electronic) Receipt
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Dec 2, 2022
Filing of the translations of the claims
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Dec 2, 2022
French translation of claims
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Dec 2, 2022
German translation of the claims
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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(Electronic) Receipt
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Jun 24, 2021
Amended claims with annotations
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Jun 24, 2021
Claims
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Jun 24, 2021
Letter accompanying subsequently filed items
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Annex to the communication
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May 10, 2021
Communication from the Examining Division
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May 4, 2021
Examination started
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Amended claims with annotations
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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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European search opinion
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Information on Search Strategy
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Jan 18, 2019
Supplementary European search report
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Jan 7, 2019
Search started
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Mar 14, 2018
Notification of forthcoming publication
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Communication to designated inventor
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Communication to designated inventor
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(Electronic) Receipt
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Abstract
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Jan 5, 2018
Claims
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Jan 5, 2018
Description
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Drawings
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Jan 5, 2018
Information on entry into European phase
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Jan 5, 2018
Request for entry into the European phase
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Copy of the international search report
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International publication pamphlet
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