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The patent EP2452980 was granted to Daicel Evonik on Jan 16, 2019. The application was filed on Jul 9, 2010 under application number EP10797203A. 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 |
|---|---|---|---|
| SOLVAY SPECIALTY POLYMERS USA | Oct 16, 2019 | BENVENUTI | ADMISSIBLE |
| SYENSQO SPECIALTY POLYMERS USA | Oct 16, 2019 | BENVENUTI | ADMISSIBLE |
| VICTREX MANUFACTURING | Oct 15, 2019 | THOMPSON | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2004045166 |
| DESCRIPTION | JP2006241201 |
| DESCRIPTION | JP2007506833 |
| DESCRIPTION | JP2008528768 |
| DESCRIPTION | WO2009057255 |
| INTERNATIONAL-SEARCH-REPORT | JPH0441557 |
| INTERNATIONAL-SEARCH-REPORT | JPH05140442 |
| INTERNATIONAL-SEARCH-REPORT | JPH06503104 |
| INTERNATIONAL-SEARCH-REPORT | JPH07331055 |
| INTERNATIONAL-SEARCH-REPORT | JPS61500021 |
| INTERNATIONAL-SEARCH-REPORT | WO2007101857 |
| OPPOSITION | CN101357985 |
| OPPOSITION | EP0001879 |
| OPPOSITION | EP0513658 |
| OPPOSITION | JP2010095615 |
| OPPOSITION | US2008214699 |
| OPPOSITION | US3166606 |
| OPPOSITION | US4186154 |
| OPPOSITION | US4609714 |
| OPPOSITION | US4657990 |
| OPPOSITION | US4699944 |
| OPPOSITION | US5342664 |
| OPPOSITION | US5532054 |
| OPPOSITION | WO2005030836 |
| OPPOSITION | WO2008075009 |
| OPPOSITION | WO9210542 |
| SEARCH | EP0138128 |
| SEARCH | EP0513658 |
| SEARCH | JPH0441557 |
| SEARCH | WO2007101857 |
| SEARCH | WO9210542 |
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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Notice of appeal
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Authorisation
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Jan 28, 2019
Dec 20, 2018
Decision to grant a European patent
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Dec 5, 2018
(Electronic) Receipt
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Dec 5, 2018
Filing of the translations of the claims
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French translation of claims
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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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Aug 14, 2018
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Examination started
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Amendments received before examination
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Submission concerning representation
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European search opinion
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Supplementary European search report
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Dec 9, 2014
Search started
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Apr 18, 2012
Notification of forthcoming publication
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Feb 28, 2012
Feb 16, 2012
Jan 25, 2012
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(Electronic) Receipt
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Jan 5, 2012
Abstract
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Jan 5, 2012
Claims
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Jan 5, 2012
Description
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Jan 5, 2012
Drawings
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Jan 5, 2012
Request for entry into the European phase
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Nov 18, 2011
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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International publication pamphlet
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