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The patent EP3395875 was granted to Covestro Deutschland on Jan 25, 2023. The application was filed on Apr 24, 2017 under application number EP17167701A. 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.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| ROHM | Jan 8, 2021 | ROHM PATENT ASSOCIATION | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | CN105400189 |
| DESCRIPTION | DE10057165 |
| DESCRIPTION | DE1031512 |
| DESCRIPTION | DE19943642 |
| DESCRIPTION | DE2500092 |
| DESCRIPTION | DE2804283 |
| DESCRIPTION | DE3121385 |
| DESCRIPTION | DE4240313 |
| DESCRIPTION | EP0500496 |
| DESCRIPTION | EP0517044 |
| DESCRIPTION | EP0570165 |
| DESCRIPTION | EP0839623 |
| DESCRIPTION | EP1308084 |
| DESCRIPTION | EP1506249 |
| DESCRIPTION | EP1582549 |
| DESCRIPTION | EP1772667 |
| DESCRIPTION | EP3099731 |
| DESCRIPTION | JP2003004942 |
| DESCRIPTION | US2016291134 |
| DESCRIPTION | US4185009 |
| DESCRIPTION | US5041313 |
| DESCRIPTION | US5367044 |
| DESCRIPTION | US5391795 |
| DESCRIPTION | US5869185 |
| DESCRIPTION | US6228973 |
| DESCRIPTION | US6350512 |
| DESCRIPTION | WO0226862 |
| DESCRIPTION | WO2005113639 |
| DESCRIPTION | WO2006108520 |
| DESCRIPTION | WO2007131491 |
| DESCRIPTION | WO2007135032 |
| DESCRIPTION | WO2008012775 |
| DESCRIPTION | WO2008037364 |
| DESCRIPTION | WO2008071363 |
| DESCRIPTION | WO2008109072 |
| DESCRIPTION | WO2008149093 |
| DESCRIPTION | WO2012080395 |
| DESCRIPTION | WO2016037865 |
| DESCRIPTION | WO9615102 |
| OPPOSITION | DE102006022925 |
| OPPOSITION | KR20100123986 |
| OPPOSITION | WO2008127752 |
| OPPOSITION | WO2008149093 |
| OPPOSITION | WO2012080397 |
| OPPOSITION | WO2012153309 |
| OPPOSITION | WO2013079477 |
| OPPOSITION | WO2014095967 |
| OPPOSITION | WO2014095981 |
| OPPOSITION | WO2016164131 |
| SEARCH | DE102006022925 |
| SEARCH | GB2287817 |
| SEARCH | WO2014095967 |
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
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(Electronic) Receipt
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Claims
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English translation of the claims
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French translation of 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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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Request for a decision
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(Electronic) Receipt
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Matter concerning the application
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Notification of forthcoming publication
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Communication to designated inventor
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Letter concerning the inventor
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European search opinion
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European search report
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Information on Search Strategy
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Search started
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Deficiency in designation of inventor
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Apr 24, 2017
Abstract
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Claims
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Description
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Request for grant of a European patent
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