Patent No. EP1941942 (titled "Oxidation Catalyst And Exhaust-Gas Purification System Using The Same") was filed by Catalyst Technology on Nov 23, 2007. The application was issued on Jun 16, 2021.

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 |
|---|---|---|
| JOHNSON MATTHEY PUBLIC LIMTED | Mar 16, 2022 | NUNN |
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
Feb 7, 2024
Feb 7, 2024
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 24, 2023
Oct 24, 2023
Oct 24, 2023
Oct 24, 2023
Oct 24, 2023
Oct 24, 2023
Oct 6, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Aug 4, 2023
Feb 22, 2023
Feb 22, 2023
Feb 22, 2023
Feb 7, 2023
Feb 7, 2023
Feb 7, 2023
Feb 7, 2023
Feb 2, 2023
Feb 1, 2023
Feb 1, 2023
Jan 24, 2023
Jan 24, 2023
Jan 24, 2023
Dec 13, 2022
Dec 7, 2022
Dec 7, 2022
Dec 7, 2022
Dec 7, 2022
Dec 7, 2022
Dec 7, 2022
Dec 7, 2022
Aug 5, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Aug 2, 2022
Mar 31, 2022
Mar 31, 2022
Mar 22, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 16, 2022
Jun 29, 2021
May 20, 2021
May 6, 2021
Apr 19, 2021
Apr 12, 2021
Apr 12, 2021
Apr 12, 2021
Mar 3, 2021
Mar 3, 2021
Mar 3, 2021
Mar 3, 2021
Mar 3, 2021
Jan 27, 2021
Jan 27, 2021
Jan 27, 2021
Jan 27, 2021
Jan 27, 2021
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Aug 19, 2020
Aug 13, 2020
Aug 13, 2020
Aug 13, 2020
Apr 14, 2020
Apr 14, 2020
Apr 14, 2020
Apr 14, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Dec 2, 2019
Nov 26, 2019
Nov 26, 2019
Nov 26, 2019
Jul 17, 2019
Jul 17, 2019
Feb 19, 2019
Feb 19, 2019
Feb 19, 2019
Feb 19, 2019
Feb 19, 2019
Oct 10, 2018
Oct 10, 2018
Jul 30, 2018
Jul 30, 2018
Jul 30, 2018
Jul 30, 2018
Jul 30, 2018
Mar 19, 2018
Mar 19, 2018
Jan 2, 2014
Dec 18, 2013
Aug 30, 2013
Aug 30, 2013
Aug 30, 2013
Aug 30, 2013
Aug 30, 2013
Aug 30, 2013
Aug 30, 2013
Jul 4, 2013
Jun 28, 2013
Jun 28, 2013
Jun 28, 2013
Jun 26, 2013
Apr 19, 2013
Mar 14, 2013
Feb 27, 2013
Feb 27, 2013
Feb 27, 2013
Feb 20, 2013
Feb 20, 2013
Jan 10, 2012
Feb 10, 2011
Feb 10, 2011
Feb 10, 2011
Feb 10, 2011
Feb 10, 2011
Feb 10, 2011
Feb 10, 2011
Feb 7, 2011
Feb 7, 2011
Feb 7, 2011
Nov 5, 2010
Nov 5, 2010
Nov 5, 2010
Nov 5, 2010
Aug 16, 2010
Jul 13, 2010
Jul 13, 2010
Jul 13, 2010
Jul 13, 2010
Dec 10, 2009
Dec 10, 2009
Dec 10, 2009
Jun 11, 2008
Jan 31, 2008
Jan 25, 2008
Nov 23, 2007
Nov 23, 2007
Nov 23, 2007
Nov 23, 2007
Nov 23, 2007
Nov 23, 2007
Nov 23, 2007
Nov 23, 2007