Patent No. EP2292668 (titled "Process For Preparing Polymers And Compositions Thereof") was filed by The Lubrizol on Oct 21, 2005. The application was issued on Sep 10, 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 |
|---|---|---|
| NEW MARKET SERVICES | Dec 20, 2019 | SSM SANDMAIR |
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
Aug 14, 2025
Aug 14, 2025
Aug 1, 2025
Jul 24, 2025
Jul 24, 2025
Jul 24, 2025
Jul 24, 2025
Jul 24, 2025
May 7, 2025
May 7, 2025
May 7, 2025
Apr 28, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Jan 27, 2025
Sep 26, 2024
Sep 26, 2024
Sep 26, 2024
Sep 26, 2024
Aug 26, 2024
Aug 16, 2024
Aug 16, 2024
Aug 16, 2024
Jul 29, 2024
Jul 29, 2024
Jul 29, 2024
Jul 29, 2024
Jul 29, 2024
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
May 10, 2024
May 10, 2024
May 10, 2024
Apr 19, 2024
Apr 18, 2024
Apr 18, 2024
Apr 18, 2024
Apr 2, 2024
Apr 2, 2024
Mar 21, 2024
Mar 19, 2024
Mar 19, 2024
Mar 19, 2024
Mar 13, 2024
Aug 21, 2023
Aug 21, 2023
Aug 21, 2023
Aug 15, 2023
Aug 15, 2023
Aug 15, 2023
Jun 30, 2023
Jun 27, 2023
Jun 27, 2023
Jun 27, 2023
Jun 19, 2023
Jun 19, 2023
Jun 1, 2023
Jun 1, 2023
May 26, 2023
Jul 22, 2022
Jul 12, 2022
Jul 12, 2022
Apr 14, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Apr 8, 2022
Dec 10, 2021
Nov 18, 2021
Nov 18, 2021
Nov 18, 2021
Sep 10, 2021
Sep 7, 2021
Sep 7, 2021
Sep 1, 2021
Sep 1, 2021
Sep 1, 2021
Aug 13, 2021
Aug 13, 2021
Aug 13, 2021
Aug 13, 2021
Jul 12, 2021
Jul 12, 2021
Jul 12, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jul 8, 2021
Jun 1, 2021
May 6, 2021
Apr 29, 2021
Apr 29, 2021
Apr 29, 2021
Apr 29, 2021
Apr 29, 2021
Apr 29, 2021
Apr 9, 2021
Apr 6, 2021
Apr 6, 2021
Apr 1, 2021
Apr 1, 2021
Apr 1, 2021
Apr 1, 2021
Apr 1, 2021
Apr 1, 2021
Apr 1, 2021
Mar 30, 2021
Mar 30, 2021
Mar 30, 2021
Mar 24, 2021
Mar 24, 2021
Oct 28, 2020
Oct 23, 2020
Oct 23, 2020
Oct 23, 2020
Oct 23, 2020
Sep 30, 2020
Sep 30, 2020
Sep 30, 2020
Sep 22, 2020
Sep 17, 2020
Sep 17, 2020
Sep 17, 2020
Sep 17, 2020
Sep 17, 2020
Sep 17, 2020
Jun 8, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jan 14, 2020
Jan 14, 2020
Jan 9, 2020
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Dec 20, 2019
Apr 1, 2019
Feb 21, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Feb 8, 2019
Oct 9, 2018
Oct 9, 2018
Oct 9, 2018
Oct 9, 2018
Oct 9, 2018
Oct 9, 2018
Oct 4, 2018
Oct 4, 2018
Oct 4, 2018
Oct 4, 2018
Oct 4, 2018
Oct 4, 2018
Oct 4, 2018
Sep 25, 2018
Sep 25, 2018
Sep 19, 2018
Sep 19, 2018
Sep 19, 2018
Aug 31, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Aug 20, 2018
Feb 28, 2018
Feb 21, 2018
Dec 7, 2017
Dec 7, 2017
Dec 7, 2017
Dec 7, 2017
Nov 27, 2017
Nov 27, 2017
Nov 21, 2017
Nov 21, 2017
Nov 21, 2017
Nov 21, 2017
Nov 21, 2017
Nov 21, 2017
Nov 21, 2017
Jul 24, 2017
Jul 24, 2017
Jul 24, 2017
May 18, 2017
May 12, 2017
May 12, 2017
Jan 16, 2017
Jan 16, 2017
Oct 21, 2016
Oct 21, 2016
Oct 21, 2016
Oct 21, 2016
Oct 21, 2016
Aug 25, 2016
Aug 19, 2016
Aug 19, 2016
Apr 22, 2016
Apr 22, 2016
Jan 29, 2016
Jan 29, 2016
Jan 8, 2016
Jan 8, 2016
Jan 8, 2016
Jan 8, 2016
Jan 8, 2016
Nov 9, 2015
Jul 23, 2015
Jul 17, 2015
Jul 17, 2015
Jul 9, 2015
Jul 2, 2015
Mar 26, 2015
Mar 26, 2015
Jan 16, 2015
Jan 16, 2015
Dec 22, 2014
Sep 26, 2014
Sep 26, 2014
Sep 26, 2014
Sep 26, 2014
Sep 26, 2014
Sep 26, 2014
Sep 26, 2014
May 16, 2014
May 16, 2014
Mar 17, 2014
Mar 17, 2014
Mar 17, 2014
Feb 14, 2014
Feb 13, 2014
Jan 31, 2014
Jan 6, 2014
Jan 6, 2014
Jan 6, 2014
Jan 6, 2014
Jan 6, 2014
Jan 6, 2014
Nov 27, 2013
Nov 27, 2013
Nov 4, 2013
Nov 4, 2013
Nov 4, 2013
Nov 4, 2013
Nov 4, 2013
Nov 4, 2013
Nov 4, 2013
Nov 4, 2013
Jul 4, 2013
Jul 4, 2013
Feb 14, 2013
Feb 8, 2013
Aug 27, 2012
Aug 27, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Aug 9, 2012
Jun 1, 2012
Jun 1, 2012
Jun 1, 2012
Jun 1, 2012
Jun 1, 2012
Apr 4, 2012
Mar 29, 2012
Mar 29, 2012
Dec 7, 2011
Dec 7, 2011
Sep 2, 2011
Sep 2, 2011
Sep 2, 2011
Sep 2, 2011
Sep 2, 2011
Sep 2, 2011
Sep 2, 2011
Mar 14, 2011
Feb 9, 2011
Jan 31, 2011
Jan 31, 2011
Jan 31, 2011
Jan 25, 2011
Jan 10, 2011
Jan 10, 2011
Jan 10, 2011
Oct 11, 2010
Sep 27, 2010
Sep 27, 2010
Sep 27, 2010
Sep 27, 2010
Sep 27, 2010
Sep 27, 2010
May 26, 2006