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The patent EP2749623 was granted to E I DU Pont DE Nemours on Feb 21, 2024. The application was filed on Mar 3, 2006 under application number EP14161825A. 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 |
|---|---|---|---|
| ARKEMA FRANCE | Oct 15, 2019 | ARKEMA | ADMISSIBLE |
| ARKEMA FRANCE | Oct 15, 2019 | ARKEMA PATENT | ADMISSIBLE |
| MEXICHEM FLUOR DE CV | Oct 14, 2019 | POTTER CLARKSON | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US20040910495 |
| DESCRIPTION | US20050062044 |
| DESCRIPTION | US5759430 |
| DESCRIPTION | USRE36951E |
| OPPOSITION | EP1985680 |
| OPPOSITION | EP2308942 |
| OPPOSITION | JPH04110388 |
| OPPOSITION | US2004256594 |
| OPPOSITION | US5722256 |
| OPPOSITION | US7345209 |
| OPPOSITION | WO2005103192 |
| OPPOSITION | WO2005108523 |
| OPPOSITION | WO2006094303 |
| SEARCH | JPH04110388 |
| SEARCH | US2004127383 |
| SEARCH | US2004256594 |
| SEARCH | US3723318 |
| SEARCH | WO2005103192 |
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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Jan 25, 2024
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Oct 11, 2023
Refund of fees
Appeal
Oct 11, 2023
Refund of fees
Appeal
Oct 6, 2023
Oct 6, 2023
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Sep 29, 2023
Advice of delivery
Appeal
Sep 29, 2023
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Sep 25, 2023
(Electronic) Receipt
Appeal
Sep 25, 2023
Sep 25, 2023
Withdrawal of an appeal
Appeal
Sep 20, 2023
Sep 20, 2023
Sep 14, 2023
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Sep 13, 2023
(Electronic) Receipt
Appeal
Sep 13, 2023
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Withdrawal of an appeal
Appeal
Sep 11, 2023
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Sep 11, 2023
Sep 6, 2023
Aug 17, 2023
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Aug 14, 2023
(Electronic) Receipt
Appeal
Aug 14, 2023
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(Electronic) Receipt
Appeal
Aug 3, 2023
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(Electronic) Receipt
Appeal
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Advice of delivery
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Jun 3, 2022
Advice of delivery
Appeal
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Claims
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Claims
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Claims
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Appeal
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Appeal
Dec 27, 2021
Claims
Appeal
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Reply to appeal
Appeal
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Reply to appeal
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Dec 16, 2021
(Electronic) Receipt
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(Electronic) Receipt
Appeal
May 28, 2021
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Notice of appeal
Appeal
May 27, 2021
(Electronic) Receipt
Appeal
May 27, 2021
May 27, 2021
Notice of appeal
Appeal
Apr 1, 2021
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Means of redress
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Jan 28, 2019
Dec 20, 2018
Decision to grant a European patent
Search/Exam
Dec 5, 2018
(Electronic) Receipt
Search/Exam
Dec 5, 2018
Filing of the translations of the claims
Search/Exam
Dec 5, 2018
French translation of claims
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Dec 5, 2018
German translation of the claims
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Dec 5, 2018
Letter accompanying subsequently filed items
Search/Exam
Sep 21, 2018
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Sep 21, 2018
Intention to grant (signatures)
Search/Exam
Sep 21, 2018
Text intended for grant (clean copy)
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Sep 21, 2018
Sep 3, 2018
Examination started
Search/Exam
Sep 27, 2017
Sep 27, 2017
Amended claims with annotations
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Sep 27, 2017
Sep 27, 2017
Amended description with annotations
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Sep 27, 2017
Amendments received before examination
Search/Exam
Sep 27, 2017
Payment of fees and costs
Search/Exam
May 4, 2017
Refund of fees
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Apr 24, 2017
Mar 22, 2017
Mar 22, 2017
European search opinion
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Mar 22, 2017
European search report
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Mar 22, 2017
Information on Search Strategy
Search/Exam
Mar 15, 2017
Search started
Search/Exam
May 24, 2016
May 11, 2016
Payment of fees and costs
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May 11, 2016
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Feb 25, 2016
(Electronic) Receipt
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Feb 25, 2016
Letter accompanying subsequently filed items
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Feb 25, 2016
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Apr 10, 2015
CDS Clean up - amended applicant details
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Apr 7, 2015
Jun 4, 2014
Notification of forthcoming publication
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May 19, 2014
Communication to designated inventor
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May 19, 2014
Communication to designated inventor
Search/Exam
Apr 16, 2014
Refund of fees
Search/Exam
Mar 31, 2014
Letter concerning fees and payments
Search/Exam
Mar 31, 2014
Payment of fees and costs
Search/Exam
Mar 26, 2014
Abstract
Search/Exam
Mar 26, 2014
Mar 26, 2014
Claims
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Mar 26, 2014
Description
Search/Exam
Mar 26, 2014
Designation of inventor
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Mar 26, 2014
Designation of inventor
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Mar 26, 2014
Request for grant of a European patent
Search/Exam
Sep 27, 2006
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