Patent No. EP3941250 (titled "Smoking Substitute System") was filed by Imperial Tobacco on Mar 13, 2020. The application was issued on Mar 5, 2025.

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 |
|---|---|---|
| NICOVENTURES | Dec 4, 2025 | D YOUNG |
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 20, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Apr 16, 2026
Dec 17, 2025
Dec 17, 2025
Dec 9, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Dec 4, 2025
Mar 18, 2025
Feb 6, 2025
Jan 29, 2025
Jan 29, 2025
Jan 29, 2025
Jan 29, 2025
Jan 29, 2025
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 30, 2024
Oct 10, 2024
Aug 28, 2023
Aug 23, 2023
Aug 23, 2023
Aug 23, 2023
Aug 23, 2023
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Jan 5, 2022
Oct 29, 2021
Oct 22, 2021
Oct 11, 2021
Sep 23, 2021
Sep 23, 2021
Aug 6, 2021
Nov 5, 2020
Nov 5, 2020
Oct 19, 2020
Oct 1, 2020
Apr 8, 2020
Apr 8, 2020
Mar 19, 2020
Mar 13, 2020
Mar 13, 2020
Mar 13, 2020
Mar 13, 2020
Mar 13, 2020
Mar 13, 2020
Mar 13, 2020