Patent No. EP3761944 (titled "Sunscreen With A Reduced Tendency To Stain Textiles, Containing Hydrogenated Vegetable Oil And A Uv-Filter Combination Of Ethylhexyl Triazone And 4-(Tert.-Butyl)-4'-Methoxydibenzoylmethane") was filed by Beiersdorf on Feb 8, 2019. The application was issued on Jan 10, 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 |
|---|---|---|
| DSM ASSETS | Oct 10, 2024 | KRAUS & LEDERER PARTGMBB |
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 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Apr 17, 2026
Mar 3, 2026
Feb 18, 2026
Feb 17, 2026
Feb 17, 2026
Feb 17, 2026
Feb 17, 2026
Feb 17, 2026
Feb 17, 2026
Feb 17, 2026
Feb 16, 2026
Feb 16, 2026
Feb 13, 2026
Feb 12, 2026
Feb 12, 2026
Feb 12, 2026
Jan 9, 2026
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Nov 20, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Apr 10, 2025
Feb 18, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Feb 13, 2025
Oct 22, 2024
Oct 22, 2024
Oct 16, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Jan 26, 2024
Jan 23, 2024
Jan 18, 2024
Jan 18, 2024
Jan 18, 2024
Jan 18, 2024
Dec 14, 2023
Dec 5, 2023
Dec 5, 2023
Dec 5, 2023
Dec 5, 2023
Dec 5, 2023
Oct 4, 2023
Oct 4, 2023
Oct 4, 2023
Oct 4, 2023
Oct 4, 2023
Oct 4, 2023
Nov 11, 2022
Nov 11, 2022
Nov 11, 2022
Nov 11, 2022
Nov 11, 2022
Jul 20, 2022
Jul 20, 2022
Jul 8, 2022
Jul 28, 2021
Jul 28, 2021
Jul 23, 2021
Jul 1, 2021
Jul 1, 2021
Jul 1, 2021
Jul 1, 2021
Jun 2, 2021
Mar 23, 2021
Mar 23, 2021
Mar 23, 2021
Mar 23, 2021
Mar 23, 2021
Jan 18, 2021
Dec 31, 2020
Dec 16, 2020
Oct 16, 2020
Oct 14, 2020
Oct 14, 2020
Sep 21, 2020
Sep 3, 2020
Sep 3, 2020
Jul 17, 2020
Oct 2, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Apr 15, 2019
Apr 15, 2019
Mar 28, 2019
Mar 28, 2019
Mar 11, 2019
Feb 25, 2019
Feb 25, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019