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The patent EP3688202 was granted to Constellium Issoire on Jan 18, 2023. The application was filed on Sep 24, 2018 under application number EP18770041A. 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 |
|---|---|---|---|
| ARCONIC | Oct 18, 2023 | FORRESTERS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1544315 |
| DESCRIPTION | US2005006010 |
| DESCRIPTION | US5312498 |
| DESCRIPTION | US5560789 |
| DESCRIPTION | US5865911 |
| DESCRIPTION | US6027582 |
| DESCRIPTION | US6972110 |
| DESCRIPTION | US8277580 |
| DESCRIPTION | US8673209 |
| DESCRIPTION | WO2004090183 |
| DESCRIPTION | WO2005001149 |
| INTERNATIONAL-SEARCH-REPORT | FR2853666 |
| INTERNATIONAL-SEARCH-REPORT | WO2005001149 |
| OPPOSITION | CN103233148 |
| OPPOSITION | EP0030070 |
| OPPOSITION | US2002015658 |
| OPPOSITION | US2005006010 |
| OPPOSITION | WO2004090183 |
| OPPOSITION | WO2006086534 |
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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Nov 27, 2025
Nov 24, 2025
(Electronic) Receipt
Appeal
Nov 24, 2025
Nov 24, 2025
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Sep 27, 2025
(Electronic) Receipt
Appeal
Sep 27, 2025
Notice of appeal
Appeal
Sep 27, 2025
Notice of appeal
Appeal
Aug 1, 2025
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Means of redress
OPPO
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Jan 31, 2023
Dec 22, 2022
Decision to grant a European patent
Search/Exam
Dec 9, 2022
(Electronic) Receipt
Search/Exam
Dec 9, 2022
Filing of the translations of the claims
Search/Exam
Dec 9, 2022
French translation of claims
Search/Exam
Dec 9, 2022
German translation of the claims
Search/Exam
Dec 9, 2022
Letter accompanying subsequently filed items
Search/Exam
Sep 2, 2022
Sep 2, 2022
Sep 2, 2022
Intention to grant (signatures)
Search/Exam
Sep 2, 2022
Text intended for grant (clean copy)
Search/Exam
Sep 2, 2022
Jun 1, 2022
(Electronic) Receipt
Search/Exam
Jun 1, 2022
Amended claims with annotations
Search/Exam
Jun 1, 2022
Amended description with annotations
Search/Exam
Jun 1, 2022
Claims
Search/Exam
Jun 1, 2022
Description
Search/Exam
Jun 1, 2022
Letter accompanying subsequently filed items
Search/Exam
Jun 1, 2022
Feb 2, 2022
Annex to the communication
Search/Exam
Feb 2, 2022
Communication from the Examining Division
Search/Exam
Jan 26, 2022
Examination started
Search/Exam
Nov 6, 2020
(Electronic) Receipt
Search/Exam
Nov 6, 2020
Nov 6, 2020
Amended claims with annotations
Search/Exam
Nov 6, 2020
Amendments received before examination
Search/Exam
Nov 6, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 19, 2020
Oct 13, 2020
(Electronic) Receipt
Search/Exam
Oct 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 13, 2020
Non-patent literature filed by a third party
Search/Exam
Oct 13, 2020
Observations by third parties
Search/Exam
Oct 13, 2020
Patent document filed by a Third party
Search/Exam
Oct 13, 2020
Patent document filed by a Third party
Search/Exam
Aug 5, 2020
Communication to designated inventor
Search/Exam
Jul 30, 2020
(Electronic) Receipt
Search/Exam
Jul 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 30, 2020
Letter concerning the inventor
Search/Exam
Jul 8, 2020
Jun 16, 2020
Jun 10, 2020
Letter which had not been notified
Search/Exam
May 7, 2020
May 4, 2020
Communication to designated inventor
Search/Exam
May 4, 2020
Communication to designated inventor
Search/Exam
May 4, 2020
Communication to designated inventor
Search/Exam
May 4, 2020
Communication to designated inventor
Search/Exam
May 4, 2020
Communication to designated inventor
Search/Exam
Apr 28, 2020
Priority search results copy provided by EPO
Search/Exam
Apr 14, 2020
Apr 8, 2020
(Electronic) Receipt
Search/Exam
Apr 8, 2020
Request for entry into the European phase
Search/Exam
Feb 7, 2020
Information on entry into European phase
Search/Exam
Apr 29, 2019
Apr 4, 2019
Copy of the international search report
Search/Exam
Apr 4, 2019
Published international application - A1
Search/Exam
Oct 25, 2018
ISR: cited documents
PCTISA
Oct 24, 2018
Oct 24, 2018
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Oct 2, 2018
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Sep 28, 2018
Sep 24, 2018
(Electronic) Receipt
PCTRO
Sep 24, 2018
Abstract
PCTRO
Sep 24, 2018
Claims
PCTRO
Sep 24, 2018
Description
PCTRO
Sep 24, 2018
Sep 24, 2018
Drawings
PCTRO
Sep 24, 2018
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