Patent No. EP3367863 (titled "Product Use Acoustic Determination System") was filed by Kimberly Clark Worldwide on Oct 30, 2015. The application was issued on Dec 2, 2020.

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 |
|---|---|---|
| OP HYGIENE | Aug 30, 2021 | GRUNECKER PATENT |
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 29, 2026
Jan 23, 2026
Jan 23, 2026
Jan 23, 2026
Dec 8, 2025
Dec 2, 2025
Dec 2, 2025
Dec 2, 2025
Oct 10, 2025
Oct 10, 2025
Oct 10, 2025
Oct 8, 2025
Jun 10, 2025
Feb 25, 2025
Feb 25, 2025
Dec 12, 2023
Dec 11, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 6, 2023
Dec 6, 2023
Dec 6, 2023
Jul 28, 2023
Jul 28, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 25, 2023
Jul 21, 2023
Jul 21, 2023
Jul 21, 2023
Jun 1, 2023
Jun 1, 2023
May 25, 2023
May 25, 2023
May 25, 2023
May 24, 2023
May 24, 2023
May 24, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Mar 15, 2023
Jan 16, 2023
Dec 22, 2022
Dec 16, 2022
Dec 16, 2022
Dec 16, 2022
Dec 15, 2022
Nov 28, 2022
Nov 28, 2022
Nov 23, 2022
Nov 15, 2022
Nov 15, 2022
Nov 15, 2022
Jun 15, 2022
Jun 7, 2022
Jun 7, 2022
Jun 7, 2022
Jun 7, 2022
Jun 7, 2022
Jun 7, 2022
Jun 7, 2022
Jun 7, 2022
Jun 7, 2022
May 25, 2022
May 25, 2022
May 25, 2022
May 25, 2022
May 25, 2022
May 25, 2022
Feb 1, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Sep 16, 2021
Sep 16, 2021
Sep 14, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
Aug 30, 2021
May 18, 2021
May 12, 2021
Dec 14, 2020
Nov 5, 2020
Sep 28, 2020
Sep 28, 2020
Sep 28, 2020
Sep 28, 2020
Sep 28, 2020
May 25, 2020
May 25, 2020
May 25, 2020
May 25, 2020
May 25, 2020
Apr 29, 2020
Dec 17, 2019
Dec 17, 2019
Dec 17, 2019
Dec 17, 2019
Dec 17, 2019
Dec 17, 2019
Dec 17, 2019
Jun 7, 2019
May 21, 2019
May 21, 2019
May 21, 2019
May 21, 2019
May 13, 2019
Aug 8, 2018
Jul 3, 2018
Jun 13, 2018
Jun 12, 2018
Jun 12, 2018
Jun 12, 2018
Jun 11, 2018
Jun 11, 2018
Jun 8, 2018
Jun 8, 2018
May 17, 2018
May 16, 2018
May 16, 2018
May 16, 2018
May 16, 2018
May 7, 2018
May 7, 2018
Mar 9, 2018
Sep 19, 2017
May 4, 2017
May 4, 2017