Patent No. EP4100179 (titled "Welding Machine") was filed by Danieli & C Officine Meccaniche on Feb 2, 2021. The application was issued on Apr 3, 2024.

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 |
|---|---|---|
| JP STEEL PLANTECH | Jan 3, 2025 | 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
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jul 15, 2026
Jun 17, 2026
May 26, 2026
May 20, 2026
May 20, 2026
May 20, 2026
May 6, 2026
Apr 22, 2026
Apr 21, 2026
Apr 21, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Nov 13, 2025
Nov 13, 2025
Nov 13, 2025
Nov 13, 2025
Nov 13, 2025
May 26, 2025
May 21, 2025
May 21, 2025
May 21, 2025
May 21, 2025
May 21, 2025
May 21, 2025
May 21, 2025
May 21, 2025
Jan 21, 2025
Jan 21, 2025
Jan 13, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Apr 16, 2024
Mar 7, 2024
Feb 21, 2024
Feb 21, 2024
Feb 21, 2024
Feb 21, 2024
Feb 21, 2024
Oct 27, 2023
Oct 27, 2023
Oct 27, 2023
Oct 27, 2023
Oct 27, 2023
Oct 27, 2023
Oct 4, 2023
Oct 4, 2023
Oct 4, 2023
Oct 4, 2023
Aug 28, 2023
Aug 28, 2023
Aug 28, 2023
Aug 28, 2023
Aug 28, 2023
Aug 28, 2023
Aug 3, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Nov 16, 2022
Sep 20, 2022
Aug 31, 2022
Aug 31, 2022
Aug 22, 2022
Jun 20, 2022
Aug 30, 2021
Aug 12, 2021
Aug 12, 2021
Jul 6, 2021
Jun 2, 2021
May 28, 2021
May 28, 2021
May 28, 2021
May 28, 2021
Mar 9, 2021
Mar 2, 2021
Mar 2, 2021
Mar 2, 2021
Mar 2, 2021
Mar 2, 2021
Mar 2, 2021
Mar 2, 2021
Mar 2, 2021
Oct 22, 2020