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The patent EP2634231 was granted to E I DU Pont DE Nemours on Jun 29, 2022. The application was filed on May 7, 2009 under application number EP13169895A. 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 |
|---|---|---|---|
| MEXICHEM FLUOR DE CV | Mar 29, 2023 | POTTER CLARKSON | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2005228202 |
| DESCRIPTION | WO2008054781 |
| DESCRIPTION | WO2008054782 |
| EXAMINATION | US2005233932 |
| EXAMINATION | WO2005105947 |
| OPPOSITION | JPH04110388 |
| OPPOSITION | US5066418 |
| OPPOSITION | US5211866 |
| OPPOSITION | WO02079129 |
| OPPOSITION | WO2005105947 |
| OTHER | EP2271724 |
| OTHER | WO2005105947 |
| SEARCH | US2007096053 |
| SEARCH | US2007197842 |
| SEARCH | US6472573 |
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.
Date
Description
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Jul 12, 2022
Jun 2, 2022
Decision to grant a European patent
Search/Exam
May 4, 2022
(Electronic) Receipt
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May 4, 2022
Filing of the translations of the claims
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May 4, 2022
French translation of claims
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May 4, 2022
German translation of the claims
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May 4, 2022
Letter accompanying subsequently filed items
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Feb 11, 2022
Feb 11, 2022
Feb 11, 2022
Intention to grant (signatures)
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Feb 11, 2022
Text intended for grant (clean copy)
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Feb 11, 2022
Dec 22, 2021
(Electronic) Receipt
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Dec 22, 2021
Amended claims with annotations
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Dec 22, 2021
Amended claims with annotations
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Dec 22, 2021
Amended description with annotations
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Dec 22, 2021
Amended description with annotations
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Dec 22, 2021
Claims
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Dec 22, 2021
Claims
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Dec 22, 2021
Description
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Dec 22, 2021
Description
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Dec 22, 2021
Letter accompanying subsequently filed items
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Dec 22, 2021
Nov 2, 2021
Annex to the communication
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Nov 2, 2021
Communication from the Examining Division
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Jul 1, 2020
Jun 24, 2020
Observations by third parties
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Apr 29, 2020
(Electronic) Receipt
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Apr 29, 2020
Amended claims with annotations
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Apr 29, 2020
Claims
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Apr 29, 2020
Claims
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Apr 29, 2020
Letter accompanying subsequently filed items
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Apr 29, 2020
Apr 21, 2020
Apr 15, 2020
Nov 29, 2019
Annex to the communication
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Nov 29, 2019
Communication from the Examining Division
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Jul 23, 2019
Jul 15, 2019
Non-patent literature filed by a third party
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Jul 15, 2019
Non-patent literature filed by a third party
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Jul 15, 2019
Observations by third parties
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Jul 15, 2019
Patent document filed by a Third party
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May 14, 2019
Amended claims with annotations
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May 14, 2019
Amended description with annotations
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May 14, 2019
Claims
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May 14, 2019
Description
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May 14, 2019
Mar 26, 2019
Mar 19, 2019
Nov 19, 2018
Annex to the communication
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Nov 19, 2018
Communication from the Examining Division
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Nov 9, 2018
Examination started
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Aug 24, 2018
Aug 1, 2017
Aug 1, 2017
Amended claims with annotations
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Aug 1, 2017
Aug 1, 2017
Amended description with annotations
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Aug 1, 2017
Amendments received before examination
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Aug 1, 2017
Payment of fees and costs
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Mar 20, 2017
Feb 15, 2017
Feb 15, 2017
European search opinion
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Feb 15, 2017
European search report
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Feb 15, 2017
Information on Search Strategy
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Feb 6, 2017
Search started
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May 24, 2016
May 11, 2016
Payment of fees and costs
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May 11, 2016
Mar 10, 2016
Mar 7, 2016
Mar 7, 2016
Mar 2, 2016
(Electronic) Receipt
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Mar 2, 2016
Letter accompanying subsequently filed items
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Mar 2, 2016
Apr 10, 2015
CDS Clean up - amended applicant details
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Apr 7, 2015
Aug 7, 2013
Notification of forthcoming publication
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Jul 23, 2013
Communication to designated inventor
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Jul 23, 2013
Communication to designated inventor
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May 30, 2013
Abstract
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May 30, 2013
May 30, 2013
Claims
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May 30, 2013
Description
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May 30, 2013
Designation of inventor
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May 30, 2013
Designation of inventor
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May 30, 2013
Drawings
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May 30, 2013
Request for grant of a European patent
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Dec 3, 2009