Patent No. EP3846426 (titled "Speech Processing Method And Mobile Terminal") was filed by Vivo Mobile Communication on Jul 16, 2019. The application was issued on Aug 30, 2023.

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 |
|---|---|---|
| PETERREINS SCHLEY PATENT UND RECHTSANWALTE PARTG MBB | May 31, 2024 | PETERREINS SCHLEY |
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
Jan 23, 2026
Jan 23, 2026
Jan 20, 2026
Jan 20, 2026
Jan 20, 2026
Dec 11, 2025
Dec 11, 2025
Dec 5, 2025
Dec 5, 2025
Dec 5, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Nov 12, 2025
Nov 12, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 11, 2025
Nov 7, 2025
Nov 7, 2025
Nov 7, 2025
Sep 17, 2025
Sep 17, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Mar 27, 2025
Mar 27, 2025
Mar 27, 2025
Mar 27, 2025
Mar 27, 2025
Mar 27, 2025
Mar 27, 2025
Nov 8, 2024
Nov 8, 2024
Nov 6, 2024
Nov 5, 2024
Oct 28, 2024
Oct 28, 2024
Oct 28, 2024
Oct 28, 2024
Oct 21, 2024
Oct 17, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Oct 14, 2024
Jun 14, 2024
Jun 14, 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
Sep 12, 2023
Aug 3, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jun 1, 2023
Jun 1, 2023
Jun 1, 2023
Jun 1, 2023
Jun 1, 2023
Jun 1, 2023
May 10, 2023
May 2, 2022
May 2, 2022
May 2, 2022
May 2, 2022
May 2, 2022
May 2, 2022
May 2, 2022
Oct 28, 2021
Oct 11, 2021
Oct 11, 2021
Oct 11, 2021
Oct 11, 2021
Sep 27, 2021
Jun 9, 2021
Apr 7, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 15, 2021
Mar 15, 2021
Jan 15, 2021
Mar 26, 2020
Mar 5, 2020
Mar 5, 2020
Mar 5, 2020