Patent No. EP3553149 (titled "Iron Oxide Powder For Brake Friction Material") was filed by Powdertech on Dec 12, 2017. The application was issued on Jan 31, 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 |
|---|---|---|
| VRI PATENT MONITORING ASSOCIATION | Oct 30, 2024 | IPSILON BENELUX |
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
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 2, 2025
Dec 1, 2025
Dec 1, 2025
Nov 27, 2025
Nov 27, 2025
Nov 27, 2025
Nov 25, 2025
Nov 20, 2025
Nov 20, 2025
Nov 20, 2025
Jul 29, 2025
Jul 29, 2025
Jul 29, 2025
Jul 29, 2025
Jul 29, 2025
Jul 29, 2025
Jul 29, 2025
Jul 23, 2025
Jul 23, 2025
Jul 18, 2025
Jul 15, 2025
Jul 15, 2025
Jul 15, 2025
Jul 15, 2025
Jul 11, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Mar 20, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Mar 14, 2025
Nov 15, 2024
Nov 15, 2024
Nov 5, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Feb 13, 2024
Jan 5, 2024
Nov 13, 2023
Nov 8, 2023
Nov 8, 2023
Nov 8, 2023
Nov 8, 2023
Nov 8, 2023
Aug 16, 2023
Aug 16, 2023
Aug 16, 2023
Aug 16, 2023
Aug 16, 2023
Aug 16, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Mar 27, 2023
Mar 27, 2023
Mar 27, 2023
Oct 5, 2022
Oct 5, 2022
Sep 26, 2022
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Nov 10, 2020
Oct 22, 2020
Oct 22, 2020
Oct 22, 2020
Oct 22, 2020
Aug 31, 2020
Aug 31, 2020
Aug 31, 2020
Jul 3, 2020
Jul 3, 2020
Jun 23, 2020
Sep 18, 2019
Jul 24, 2019
Jul 19, 2019
Jul 18, 2019
Jul 17, 2019
Jul 17, 2019
Jul 3, 2019
Jul 3, 2019
Jun 4, 2019
Jun 4, 2019
Jun 4, 2019
Jun 4, 2019
Jun 4, 2019
Jun 4, 2019
Apr 26, 2019
Jul 16, 2018
Jun 21, 2018
Jun 21, 2018
Jun 21, 2018