Patent No. EP3234209 (titled "Tough And Wear Resistant Ferrous Alloys Containing Multiple Hardphases") was filed by Oerlikon Metco on Dec 15, 2015. The application was issued on Jul 24, 2024.
Wear-resistant ferrous alloys with improved toughness and impact resistance, comprising a matrix of near-spherical and hypereutectic borides and/or borocarbides, with a volume fraction of near-spherical phases ≥5% and a volume fraction of hypereutectic rod-like phases ≤5%. The alloys exhibit a unique microstructure characterized by spherical boride morphology, eliminating the embrittling effects of rod-like phases, and achieve exceptional wear resistance and toughness through controlled phase chemistry and morphology.

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 |
|---|---|---|
| UDDEHOLMS | Apr 23, 2025 | NORENS PATENTBYRA |
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
Apr 27, 2026
Apr 27, 2026
Apr 27, 2026
Apr 27, 2026
Apr 16, 2026
Apr 16, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 10, 2026
Apr 1, 2026
Mar 27, 2026
Mar 27, 2026
Mar 27, 2026
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Dec 18, 2025
Nov 3, 2025
Oct 28, 2025
Oct 28, 2025
Oct 28, 2025
Oct 28, 2025
Sep 17, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
May 12, 2025
May 12, 2025
Apr 28, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Feb 28, 2025
Feb 14, 2025
Feb 14, 2025
Feb 14, 2025
Feb 14, 2025
Feb 14, 2025
Aug 6, 2024
Jun 27, 2024
Jun 17, 2024
Jun 17, 2024
Jun 17, 2024
Jun 17, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 4, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Feb 3, 2022
Feb 3, 2022
Dec 22, 2021
Dec 22, 2021
Dec 3, 2021
Nov 9, 2021
Nov 9, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Nov 23, 2020
Nov 18, 2020
Nov 18, 2020
Nov 18, 2020
Jul 20, 2020
Jul 20, 2020
Apr 6, 2020
Apr 6, 2020
Apr 6, 2020
Apr 6, 2020
Apr 6, 2020
Dec 9, 2019
Dec 9, 2019
Dec 9, 2019
Nov 27, 2019
Jan 14, 2019
Jan 14, 2019
Jan 14, 2019
Jan 14, 2019
Jan 14, 2019
Jan 14, 2019
Jan 14, 2019
Jul 5, 2018
Jun 18, 2018
Jun 18, 2018
Jun 18, 2018
Jun 18, 2018
May 17, 2018
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Feb 9, 2018
Sep 27, 2017
Aug 10, 2017
Aug 8, 2017
Aug 8, 2017
Jul 4, 2017
Jun 28, 2017
Jun 28, 2017
Jun 20, 2017
Jun 20, 2017
Jun 20, 2017
May 2, 2017
Oct 27, 2016
Oct 27, 2016
Jul 12, 2016
Jul 12, 2016
Jul 12, 2016
Jun 23, 2016