Patent No. EP3840896 (titled "Method And Device For Controlling A Stretch Reducing Rolling Mill For Wall Thickness Compensation") was filed by SMS Group on Aug 15, 2019. The application was issued on Oct 12, 2022.

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 |
|---|---|---|
| KOCKS TECHNIK | Jul 12, 2023 | HOFFMANN EITLE |
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
Oct 8, 2025
Oct 2, 2025
Oct 2, 2025
Sep 28, 2025
Sep 26, 2025
Sep 26, 2025
Sep 26, 2025
Aug 18, 2025
Aug 12, 2025
Aug 12, 2025
Aug 12, 2025
Aug 11, 2025
Aug 11, 2025
Aug 5, 2025
Aug 5, 2025
Aug 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
Jun 5, 2025
May 15, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Mar 18, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Feb 5, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 28, 2025
Jan 23, 2025
Jan 23, 2025
Jan 23, 2025
Jan 13, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Nov 6, 2024
Oct 31, 2024
Oct 31, 2024
Oct 31, 2024
Oct 31, 2024
Oct 31, 2024
Oct 31, 2024
Aug 29, 2024
Aug 23, 2024
Aug 23, 2024
Aug 23, 2024
Aug 5, 2024
Jul 26, 2024
Jul 26, 2024
Jul 26, 2024
Jul 26, 2024
Jul 26, 2024
Apr 4, 2024
Mar 28, 2024
Mar 28, 2024
Mar 28, 2024
Mar 28, 2024
Feb 9, 2024
Feb 5, 2024
Feb 5, 2024
Feb 5, 2024
Feb 5, 2024
Feb 5, 2024
Feb 5, 2024
Feb 5, 2024
Dec 11, 2023
Dec 11, 2023
Dec 8, 2023
Dec 4, 2023
Dec 4, 2023
Dec 4, 2023
Jul 26, 2023
Jul 26, 2023
Jul 18, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Jul 12, 2023
Oct 25, 2022
Sep 15, 2022
Jul 19, 2022
Jul 14, 2022
Jul 14, 2022
Jul 14, 2022
Jul 14, 2022
Jul 14, 2022
Apr 12, 2022
Apr 12, 2022
Apr 12, 2022
Apr 12, 2022
Apr 12, 2022
Mar 28, 2022
Dec 14, 2021
Dec 14, 2021
Dec 14, 2021
Dec 14, 2021
Dec 9, 2021
Jun 2, 2021
Apr 21, 2021
Mar 29, 2021
Mar 29, 2021
Mar 8, 2021
Feb 4, 2021
Feb 4, 2021
Jan 15, 2021
Mar 17, 2020
Feb 27, 2020
Feb 27, 2020
Feb 27, 2020
Nov 26, 2019
Nov 26, 2019
Nov 26, 2019
Nov 26, 2019
Nov 26, 2019
Aug 30, 2019
Aug 29, 2019
Aug 27, 2019
Aug 26, 2019
Aug 15, 2019
Aug 15, 2019
Aug 15, 2019
Aug 15, 2019
Aug 15, 2019
Aug 15, 2019
Aug 15, 2019