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The patent EP3260516 was granted to The Chemours FC on Apr 30, 2025. The application was filed on Mar 3, 2006 under application number EP17179475A. 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 |
|---|---|---|---|
| MEXICHEM FLUOR DE CV | Jun 2, 2020 | POTTER CLARKSON | WITHDRAWN |
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 | JPH04110388 |
| OPPOSITION | US2005230657 |
| OPPOSITION | US2006185972 |
| OPPOSITION | WO0166498 |
| OPPOSITION | WO2005049761 |
| OPPOSITION | WO2005090271 |
| OPPOSITION | WO2005103187 |
| OPPOSITION | WO2005103188 |
| OPPOSITION | WO2005108523 |
| OPPOSITION | WO2006094303 |
| SEARCH | JPH04110388 |
| SEARCH | US2004089839 |
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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Apr 3, 2025
Mar 21, 2025
Mar 21, 2025
Mar 21, 2025
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Mar 21, 2025
Feb 13, 2025
Feb 13, 2025
Feb 7, 2025
Refund of fees
Appeal
Feb 6, 2025
Jan 22, 2025
Jan 22, 2025
Jan 17, 2025
(Electronic) Receipt
Appeal
Jan 17, 2025
Jan 17, 2025
Jan 17, 2025
Withdrawal of an appeal
Appeal
Nov 26, 2024
(Electronic) Receipt
Appeal
Nov 26, 2024
Nov 26, 2024
Jun 17, 2024
Jun 12, 2024
(Electronic) Receipt
Appeal
Jun 12, 2024
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Apr 15, 2024
Apr 11, 2024
Apr 9, 2024
(Electronic) Receipt
Appeal
Apr 9, 2024
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Mar 28, 2024
Mar 20, 2024
(Electronic) Receipt
Appeal
Mar 20, 2024
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Feb 15, 2024
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Oct 31, 2023
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Oct 30, 2023
Sep 27, 2023
Refund of fees
Appeal
Sep 20, 2023
Sep 18, 2023
Sep 13, 2023
(Electronic) Receipt
Appeal
Sep 13, 2023
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Aug 30, 2023
Aug 25, 2023
(Electronic) Receipt
Appeal
Aug 25, 2023
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May 26, 2023
(Electronic) Receipt
Appeal
May 26, 2023
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Feb 21, 2023
(Electronic) Receipt
Appeal
Feb 21, 2023
Feb 21, 2023
Reply to appeal
Appeal
Feb 15, 2023
Feb 9, 2023
(Electronic) Receipt
Appeal
Feb 9, 2023
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Reply to appeal
Appeal
Dec 20, 2022
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Oct 7, 2022
(Electronic) Receipt
Appeal
Oct 7, 2022
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Sep 28, 2022
(Electronic) Receipt
Appeal
Sep 28, 2022
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(Electronic) Receipt
Appeal
Aug 4, 2022
Aug 4, 2022
Notice of appeal
Appeal
Aug 2, 2022
Aug 2, 2022
Jul 27, 2022
(Electronic) Receipt
Appeal
Jul 27, 2022
Jul 27, 2022
Notice of appeal
Appeal
Jun 3, 2022
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OPPO
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Jul 22, 2019
Jun 14, 2019
Decision to grant a European patent
Search/Exam
May 27, 2019
(Electronic) Receipt
Search/Exam
May 27, 2019
Filing of the translations of the claims
Search/Exam
May 27, 2019
French translation of claims
Search/Exam
May 27, 2019
German translation of the claims
Search/Exam
May 27, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 21, 2019
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Mar 21, 2019
Intention to grant (signatures)
Search/Exam
Mar 21, 2019
Text intended for grant (clean copy)
Search/Exam
Mar 21, 2019
Jan 30, 2019
Amended claims with annotations
Search/Exam
Jan 30, 2019
Amended description with annotations
Search/Exam
Jan 30, 2019
Claims
Search/Exam
Jan 30, 2019
Description
Search/Exam
Jan 30, 2019
Nov 7, 2018
Annex to the communication
Search/Exam
Nov 7, 2018
Communication from the Examining Division
Search/Exam
Oct 29, 2018
Examination started
Search/Exam
Jun 14, 2018
Jun 14, 2018
Amended claims with annotations
Search/Exam
Jun 14, 2018
Amendments received before examination
Search/Exam
Jan 4, 2018
Nov 29, 2017
Notification of forthcoming publication
Search/Exam
Oct 30, 2017
Oct 30, 2017
European search opinion
Search/Exam
Oct 30, 2017
European search report
Search/Exam
Oct 30, 2017
Information on Search Strategy
Search/Exam
Oct 23, 2017
Search started
Search/Exam
Aug 25, 2017
Communication to designated inventor
Search/Exam
Aug 25, 2017
Communication to designated inventor
Search/Exam
Jul 4, 2017
Abstract
Search/Exam
Jul 4, 2017
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Claims
Search/Exam
Jul 4, 2017
Description
Search/Exam
Jul 4, 2017
Designation of inventor
Search/Exam
Jul 4, 2017
Request for grant of a European patent
Search/Exam
Sep 27, 2006
Sep 27, 2006
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