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The patent EP3070118 was granted to Kaneka on Feb 26, 2020. The application was filed on Nov 13, 2014 under application number EP14862723A. 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 |
|---|---|---|---|
| LANXESS DEUTSCHLAND | Nov 26, 2020 | - | ADMISSIBLE |
| TOSAF COMPOUNDS | Nov 26, 2020 | GRUNECKER PATENT | ADMISSIBLE |
| URSA INSULATION | Nov 26, 2020 | ZIMMERMANN & PARTNER PATENTANWALTE MBB | ADMISSIBLE |
| DDP SPECIALTY ELECTRONIC MATERIALS | Nov 25, 2020 | DEHNS | - |
| RAVAGO | Nov 25, 2020 | OFFICE FREYLINGER | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2007058736 |
| DESCRIPTION | WO2010080285 |
| INTERNATIONAL-SEARCH-REPORT | JP2012512942 |
| INTERNATIONAL-SEARCH-REPORT | JP2013514397 |
| INTERNATIONAL-SEARCH-REPORT | JP2014118474 |
| INTERNATIONAL-SEARCH-REPORT | JP2015004019 |
| OPPOSITION | EP1983028 |
| OPPOSITION | EP2426165 |
| OPPOSITION | EP2520610 |
| OPPOSITION | EP2692519 |
| OPPOSITION | JP2005330351 |
| OPPOSITION | JP2012512942 |
| OPPOSITION | JP2013235540 |
| OPPOSITION | JP2013514397 |
| OPPOSITION | JP2014118474 |
| OPPOSITION | JP2014198807 |
| OPPOSITION | JP2015004019 |
| OPPOSITION | JP4933812B |
| OPPOSITION | US2012283345 |
| OPPOSITION | WO2006013554 |
| OPPOSITION | WO2007058736 |
| OPPOSITION | WO2009029290 |
| OPPOSITION | WO2010080285 |
| OPPOSITION | WO2011008417 |
| OPPOSITION | WO2012082332 |
| OPPOSITION | WO2013009469 |
| OPPOSITION | WO2013081958 |
| OPPOSITION | WO2013092322 |
| OPPOSITION | WO2013092466 |
| OPPOSITION | WO2014125933 |
| SEARCH | JP2005330351 |
| SEARCH | WO2007058736 |
| SEARCH | WO2014125933 |
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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(Electronic) Receipt
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Amended description with annotations
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Description
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French translation of claims
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German translation of the claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Amended claims with annotations
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Amended description with annotations
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Description
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Annex to the communication
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Communication from the Examining Division
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Amended claims with annotations
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Amended description with annotations
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Description
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Annex to the communication
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Consultation by telephone/in person
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Annex to the communication
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Communication from the Examining Division
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Amended claims with annotations
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Amended claims with annotations
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Claims
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Annex to the communication
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Communication from the Examining Division
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Amended claims with annotations
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Amendments received before examination
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European search opinion
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May 26, 2017
Information on Search Strategy
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May 26, 2017
Supplementary European search report
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May 10, 2017
Search started
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Aug 24, 2016
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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Description
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Request for entry into the European phase
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Information on entry into European phase
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Copy of the international search report
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International publication pamphlet
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