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The patent EP2031049 was granted to Celanese on Mar 6, 2019. The application was filed on Aug 25, 2008 under application number EP08014987A. 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 |
|---|---|---|---|
| MONOSOL | Dec 6, 2019 | MAI BESIER | ADMISSIBLE |
| THE PROCTER & GAMBLE | Dec 4, 2019 | GILL JENNINGS & EVERY | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2005065272 |
| DESCRIPTION | US2005222355 |
| DESCRIPTION | US6166117 |
| DESCRIPTION | US6608121 |
| DESCRIPTION | US6787512 |
| DESCRIPTION | US6818709 |
| DESCRIPTION | US6956070 |
| OPPOSITION | EP1854869 |
| OPPOSITION | EP2016105 |
| OPPOSITION | US2004035739 |
| OPPOSITION | US2005155936 |
| OPPOSITION | US4146676 |
| OPPOSITION | US6166117 |
| OPPOSITION | US6267808 |
| OPPOSITION | US6608121 |
| OPPOSITION | WO0242401 |
| OPPOSITION | WO2007044968 |
| OPPOSITION | WO2007133415 |
| SEARCH | EP0298222 |
| SEARCH | EP0481547 |
| SEARCH | US2004002433 |
| SEARCH | US2005155936 |
| SEARCH | US3528921 |
| SEARCH | US4797221 |
| SEARCH | WO2005100525 |
| SEARCH | WO2006132729 |
| SEARCH | WO2007064681 |
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
Search/Exam
Jan 21, 2019
Filing of the translations of the claims
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French translation of claims
Search/Exam
Jan 21, 2019
German translation of the claims
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Jan 21, 2019
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Amended description with annotations
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Description
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Submission concerning representation
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Mar 27, 2018
Annex to the communication
Search/Exam
Mar 27, 2018
Communication from the Examining Division
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Claims
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Annex to the communication
Search/Exam
Sep 20, 2017
Communication from the Examining Division
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Aug 24, 2017
Payment of fees and costs
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Jun 8, 2017
Claims
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Jun 8, 2017
Claims
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Jun 8, 2017
Non-scannable object
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Non-scannable object
Search/Exam
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Annex to the communication
Search/Exam
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Payment of fees and costs
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Payment of fees and costs
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Payment of fees and costs
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Claims
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Annex to the communication
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Jan 11, 2012
Communication from the Examining Division
Search/Exam
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Submission concerning representation
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Jul 26, 2010
Annex
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Jul 26, 2010
Claims
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Communication from the Examining Division
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European search opinion
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European search report
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Feb 6, 2009
Letter concerning search matters
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Feb 4, 2009
Notification of forthcoming publication
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Jan 21, 2009
Letter concerning the inventor
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Partial European search report
Search/Exam
Dec 16, 2008
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Letter which had not been notified
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Letter concerning the priority
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Sep 5, 2008
Priority document
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Aug 25, 2008
Abstract
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Aug 25, 2008
Claims
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Aug 25, 2008
Description
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Aug 25, 2008
Designation of inventor
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Aug 25, 2008
Request for grant of a European patent
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