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The patent EP3635146 was granted to Constellium Issoire on Nov 16, 2022. The application was filed on Jun 5, 2018 under application number EP18748959A. 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 | Aug 16, 2023 | LENZING GERBER STUTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2009142222 |
| DESCRIPTION | WO2012110717 |
| DESCRIPTION | WO2015086921 |
| INTERNATIONAL-SEARCH-REPORT | EP2231888 |
| INTERNATIONAL-SEARCH-REPORT | US2009142222 |
| INTERNATIONAL-SEARCH-REPORT | WO2012110717 |
| INTERNATIONAL-SEARCH-REPORT | WO2015086921 |
| INTERNATIONAL-SEARCH-REPORT | WO2016051099 |
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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Decision to grant a European patent
Search/Exam
Oct 6, 2022
(Electronic) Receipt
Search/Exam
Oct 6, 2022
English translation of the claims
Search/Exam
Oct 6, 2022
Filing of the translations of the claims
Search/Exam
Oct 6, 2022
German translation of the claims
Search/Exam
Oct 6, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 18, 2022
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Intention to grant (signatures)
Search/Exam
Jul 18, 2022
Text intended for grant (clean copy)
Search/Exam
Jul 18, 2022
Mar 14, 2022
(Electronic) Receipt
Search/Exam
Mar 14, 2022
Amended claims with annotations
Search/Exam
Mar 14, 2022
Claims
Search/Exam
Mar 14, 2022
Letter accompanying subsequently filed items
Search/Exam
Mar 14, 2022
Nov 22, 2021
Annex to the communication
Search/Exam
Nov 22, 2021
Communication from the Examining Division
Search/Exam
May 6, 2021
(Electronic) Receipt
Search/Exam
May 6, 2021
Amended claims with annotations
Search/Exam
May 6, 2021
Amended description with annotations
Search/Exam
May 6, 2021
Claims
Search/Exam
May 6, 2021
Description
Search/Exam
May 6, 2021
Letter accompanying subsequently filed items
Search/Exam
May 6, 2021
Nov 12, 2020
Annex to the communication
Search/Exam
Nov 12, 2020
Communication from the Examining Division
Search/Exam
Nov 6, 2020
Examination started
Search/Exam
Jul 20, 2020
(Electronic) Receipt
Search/Exam
Jul 20, 2020
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Amended claims with annotations
Search/Exam
Jul 20, 2020
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Amended description with annotations
Search/Exam
Jul 20, 2020
Amendments received before examination
Search/Exam
Jul 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 18, 2020
Mar 11, 2020
Communication to designated inventor
Search/Exam
Mar 5, 2020
(Electronic) Receipt
Search/Exam
Mar 5, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 5, 2020
Letter concerning the inventor
Search/Exam
Jan 31, 2020
Jan 28, 2020
Letter which had not been notified
Search/Exam
Jan 17, 2020
Jan 10, 2020
Communication to designated inventor
Search/Exam
Jan 10, 2020
Communication to designated inventor
Search/Exam
Jan 10, 2020
Communication to designated inventor
Search/Exam
Jan 10, 2020
Communication to designated inventor
Search/Exam
Jan 10, 2020
Communication to designated inventor
Search/Exam
Jan 10, 2020
Priority search results copy provided by EPO
Search/Exam
Jan 2, 2020
Dec 16, 2019
(Electronic) Receipt
Search/Exam
Dec 16, 2019
Request for entry into the European phase
Search/Exam
Oct 18, 2019
Information on entry into European phase
Search/Exam
Aug 12, 2019
Dec 13, 2018
Copy of the international search report
Search/Exam
Dec 13, 2018
Copy of the international search report
Search/Exam
Dec 13, 2018
Published international application - A1
Search/Exam
Sep 11, 2018
ISR: cited documents
PCTISA
Sep 11, 2018
Sep 10, 2018
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Jul 25, 2018
Jun 5, 2018
Abstract
PCTISA
Jun 5, 2018
Claims
PCTISA
Jun 5, 2018
Description
PCTISA
Jun 5, 2018
Drawings
PCTISA