Patent No. EP1939259 (titled "Friction Body, Writing Instrument And Writing Instrument Set") was filed by Kabushiki Kaisha Pilot Also Trading Pilot on Nov 28, 2007. The application was issued on Mar 9, 2022.

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 |
|---|---|---|
| SOCIETE BIC | Dec 9, 2022 | 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
Oct 2, 2025
Oct 2, 2025
Jun 24, 2025
Jun 24, 2025
Jun 24, 2025
Jun 24, 2025
Jun 19, 2025
Apr 11, 2025
Jan 10, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Sep 12, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Jul 11, 2024
Jul 8, 2024
Jul 8, 2024
Jul 8, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
May 6, 2024
Apr 10, 2024
Apr 9, 2024
Apr 5, 2024
Apr 5, 2024
Apr 5, 2024
Apr 5, 2024
Mar 18, 2024
Mar 15, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 13, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Feb 13, 2024
Feb 12, 2024
Feb 8, 2024
Feb 8, 2024
Feb 8, 2024
Feb 8, 2024
Feb 8, 2024
Feb 8, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Sep 1, 2023
Aug 31, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Aug 30, 2023
Jul 19, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Apr 26, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Apr 21, 2023
Feb 24, 2023
Feb 21, 2023
Feb 21, 2023
Feb 21, 2023
Feb 21, 2023
Feb 21, 2023
Feb 21, 2023
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 21, 2022
Dec 16, 2022
Dec 16, 2022
Dec 16, 2022
Dec 15, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Mar 22, 2022
Feb 10, 2022
Jan 28, 2022
Jan 26, 2022
Jan 26, 2022
Jan 25, 2022
Jan 25, 2022
Jan 25, 2022
Jan 25, 2022
Jan 25, 2022
Jan 20, 2022
Jan 20, 2022
Jan 20, 2022
Jan 20, 2022
Jan 20, 2022
Jan 20, 2022
Sep 17, 2021
Sep 17, 2021
Sep 17, 2021
Sep 17, 2021
Sep 17, 2021
Sep 17, 2021
Sep 3, 2021
Sep 3, 2021
Sep 3, 2021
Jul 26, 2021
Jul 22, 2021
Jul 22, 2021
Jul 22, 2021
Jul 21, 2021
Jul 21, 2021
Jul 21, 2021
Jul 20, 2021
Jul 15, 2021
Jul 15, 2021
Jul 15, 2021
Jul 15, 2021
Jul 15, 2021
Jul 15, 2021
Jul 15, 2021
Jul 14, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Jul 9, 2021
Nov 17, 2020
Nov 17, 2020
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
Feb 17, 2020
Feb 17, 2020
Oct 7, 2019
Oct 7, 2019
Oct 7, 2019
Oct 7, 2019
Oct 7, 2019
Jun 6, 2019
Jun 6, 2019
May 31, 2019
May 22, 2015
Mar 30, 2015
Mar 30, 2015
Mar 30, 2015
Sep 26, 2014
Dec 20, 2010
Dec 20, 2010
Nov 22, 2010
Nov 11, 2010
Jul 1, 2010
Jun 1, 2010
Feb 22, 2010
Jan 14, 2010
Jan 14, 2010
Jan 14, 2010
Jun 4, 2008
Feb 29, 2008
Feb 14, 2008
Feb 14, 2008
Jan 30, 2008
Nov 28, 2007
Nov 28, 2007
Nov 28, 2007
Nov 28, 2007
Nov 28, 2007
Nov 28, 2007