Patent No. EP3821733 (titled "Tow Band For Electronic Cigarette Tip, Electronic Cigarette Tip, And Production Method Of Tow Band For Electronic Cigarette Tip") was filed by Daicel on Jul 13, 2018. The application was issued on Nov 22, 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 |
|---|---|---|
| PATENT ATTORNEYS WILHELM & BECK | Aug 21, 2024 | WALLINGER RICKER SCHLOTTER TOSTMANN |
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 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Jan 14, 2026
Dec 9, 2025
Nov 21, 2025
Nov 21, 2025
Nov 19, 2025
Nov 18, 2025
Nov 18, 2025
Nov 18, 2025
Oct 14, 2025
Oct 14, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Oct 2, 2025
Oct 1, 2025
Sep 24, 2025
Sep 24, 2025
Sep 24, 2025
Apr 16, 2025
Apr 16, 2025
Apr 16, 2025
Apr 16, 2025
Apr 16, 2025
Jan 8, 2025
Dec 20, 2024
Dec 20, 2024
Dec 20, 2024
Oct 11, 2024
Oct 8, 2024
Oct 8, 2024
Oct 8, 2024
Oct 8, 2024
Oct 8, 2024
Oct 8, 2024
Oct 2, 2024
Oct 2, 2024
Oct 2, 2024
Sep 5, 2024
Sep 5, 2024
Aug 27, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Aug 21, 2024
Dec 5, 2023
Oct 26, 2023
Oct 18, 2023
Oct 18, 2023
Oct 18, 2023
Oct 18, 2023
Jun 23, 2023
Jun 23, 2023
Jun 23, 2023
Jun 23, 2023
Jun 23, 2023
Jun 23, 2023
May 10, 2023
Mar 17, 2023
Oct 27, 2022
Oct 27, 2022
Oct 27, 2022
Oct 27, 2022
Oct 27, 2022
Oct 27, 2022
Oct 27, 2022
Aug 1, 2022
Jul 27, 2022
Jul 22, 2022
Jul 22, 2022
Jul 22, 2022
Mar 31, 2022
Mar 14, 2022
Mar 14, 2022
Mar 14, 2022
Mar 14, 2022
Feb 17, 2022
Apr 21, 2021
Mar 2, 2021
Feb 24, 2021
Feb 24, 2021
Feb 24, 2021
Feb 24, 2021
Feb 23, 2021
Feb 19, 2021
Jan 21, 2021
Jan 21, 2021
Jan 21, 2021
Jan 21, 2021
Jan 21, 2021
Jan 21, 2021
Jan 21, 2021
Jan 21, 2021
Jan 18, 2021
Jan 18, 2021
Jan 18, 2021
Nov 20, 2020
Jan 21, 2020
Jan 16, 2020
Jan 16, 2020
Jan 16, 2020