The weekly litigation news digest is live. Subscribe now
The patent EP3938554 was granted to Novelis on Sep 6, 2023. The application was filed on Mar 11, 2020 under application number EP20717044A. 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 |
|---|---|---|---|
| SPEIRA | Jun 6, 2024 | COHAUSZ & FLORACK | ADMISSIBLE |
| ALUMINIUM DUFFEL | Jun 5, 2024 | MULLER SCHUPFNER & PARTNER PATENT UND RECHTSANWALTSPARTNERSCHAFT MBB MUC | ADMISSIBLE |
| C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM NEUF BRISACH | May 31, 2024 | CONSTELLIUM PROPRIETE INDUSTRIELLE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US7472740 |
| DESCRIPTION | US7748434 |
| DESCRIPTION | US8927113 |
| EXAMINATION | CN102119078 |
| EXAMINATION | CN102443725B |
| INTERNATIONAL-SEARCH-REPORT | EP3362583 |
| INTERNATIONAL-SEARCH-REPORT | US2010316887 |
| INTERNATIONAL-SEARCH-REPORT | WO2016077044 |
| INTERNATIONAL-SEARCH-REPORT | WO2018136382 |
| OPPOSITION | CN101781723 |
| OPPOSITION | CN102167205 |
| OPPOSITION | CN102443725 |
| OPPOSITION | CN104046858 |
| OPPOSITION | CN104975208 |
| OPPOSITION | CN105238962 |
| OPPOSITION | CN105506413 |
| OPPOSITION | CN105711335 |
| OPPOSITION | CN105908237 |
| OPPOSITION | CN106399774 |
| OPPOSITION | CN107058815 |
| OPPOSITION | CN108359864 |
| OPPOSITION | CN108396209 |
| OPPOSITION | CN113774258 |
| OPPOSITION | EP1295956 |
| OPPOSITION | EP2003219 |
| OPPOSITION | EP2175042 |
| OPPOSITION | EP3336215 |
| OPPOSITION | EP3362583 |
| OPPOSITION | US2009242087 |
| OPPOSITION | US2012168045 |
| OPPOSITION | US2015376741 |
| OPPOSITION | WO2004094679 |
| OPPOSITION | WO2017125582 |
| OPPOSITION | WO2018162823 |
| OPPOSITION | WO2018200355 |
| OPPOSITION | WO9603531 |
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
Get instant alerts for new documents
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Means of redress
OPPO
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Nov 5, 2025
Oct 8, 2025
Aug 18, 2025
Aug 12, 2025
Aug 12, 2025
Aug 12, 2025
Aug 12, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Aug 7, 2025
Jul 18, 2025
Jul 18, 2025
Jul 18, 2025
Jul 15, 2025
Jul 15, 2025
Jul 15, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 16, 2025
Jan 16, 2025
Jan 16, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Oct 23, 2024
Oct 23, 2024
Oct 23, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Oct 17, 2024
Jun 18, 2024
Jun 18, 2024
Jun 18, 2024
Jun 18, 2024
Jun 11, 2024
Jun 10, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 6, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
May 31, 2024
Sep 19, 2023
Aug 14, 2023
Aug 10, 2023
Decision to grant a European patent
Search/Exam
Aug 3, 2023
Letter accompanying subsequently filed items
Search/Exam
Aug 3, 2023
Aug 1, 2023
(Electronic) Receipt
Search/Exam
Aug 1, 2023
French translation of claims
Search/Exam
Aug 1, 2023
German translation of the claims
Search/Exam
Aug 1, 2023
Letter accompanying subsequently filed items
Search/Exam
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Apr 12, 2023
Intention to grant (signatures)
Search/Exam
Apr 12, 2023
Text intended for grant (clean copy)
Search/Exam
Apr 12, 2023
Jan 12, 2023
(Electronic) Receipt
Search/Exam
Jan 12, 2023
Amended claims with annotations
Search/Exam
Jan 12, 2023
Amended description with annotations
Search/Exam
Jan 12, 2023
Claims
Search/Exam
Jan 12, 2023
Description
Search/Exam
Jan 12, 2023
Letter accompanying subsequently filed items
Search/Exam
Jan 12, 2023
Sep 6, 2022
Annex to a communication
Search/Exam
Sep 6, 2022
Annex to a communication
Search/Exam
Sep 6, 2022
Annex to the communication
Search/Exam
Sep 6, 2022
Communication from the Examining Division
Search/Exam
Sep 1, 2022
Examination started
Search/Exam
Mar 23, 2022
Payment submission rejected
Search/Exam
Dec 22, 2021
Dec 15, 2021
(Electronic) Receipt
Search/Exam
Dec 15, 2021
Dec 15, 2021
Amended claims with annotations
Search/Exam
Dec 15, 2021
Dec 15, 2021
Amended description with annotations
Search/Exam
Dec 15, 2021
Amendments received before examination
Search/Exam
Dec 15, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 20, 2021
Sep 27, 2021
Aug 18, 2021
Information regarding early processing
Search/Exam
Aug 5, 2021
(Electronic) Receipt
Search/Exam
Aug 5, 2021
Request for entry into the European phase
Search/Exam
Jul 23, 2021
Information on entry into European phase
Search/Exam
Oct 5, 2020
Sep 17, 2020
Copy of the international search report
Search/Exam
Sep 17, 2020
Published international application - A1
Search/Exam
Jun 5, 2020
ISR: cited documents
PCTISA
Jun 5, 2020
Jun 5, 2020
Jun 5, 2020
Apr 21, 2020
Apr 2, 2020
Abstract
PCTISA
Apr 2, 2020
Claims
PCTISA
Apr 2, 2020
Description
PCTISA
Apr 2, 2020
Drawings
PCTISA
Apr 2, 2020