Patent No. EP1328155 (titled "Combinations Of Active Ingredients For Protecting Animal Skins And Leather") was filed by Bayer on Sep 7, 2001. The application was issued on Apr 27, 2016.

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.
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
Feb 15, 2019
Feb 15, 2019
Feb 12, 2019
Nov 9, 2018
Nov 8, 2018
Nov 8, 2018
Nov 8, 2018
Nov 7, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Nov 2, 2018
Jul 4, 2018
Jun 7, 2018
Jun 7, 2018
Jun 7, 2018
Mar 14, 2018
Mar 14, 2018
Mar 14, 2018
Mar 14, 2018
Jan 22, 2018
Jan 16, 2018
Jan 16, 2018
Jan 16, 2018
Jan 3, 2018
Jan 3, 2018
Jan 3, 2018
Jan 3, 2018
Dec 27, 2017
Dec 22, 2017
Dec 20, 2017
Dec 20, 2017
Dec 20, 2017
Dec 20, 2017
Dec 20, 2017
Dec 20, 2017
Dec 20, 2017
Jul 19, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Jul 14, 2017
Mar 7, 2017
Mar 7, 2017
Feb 6, 2017
Jan 27, 2017
Jan 27, 2017
Jan 27, 2017
Jan 27, 2017
Apr 28, 2016
Apr 1, 2016
Mar 10, 2016
Mar 10, 2016
Mar 10, 2016
Mar 10, 2016
Mar 10, 2016
Nov 30, 2015
Nov 30, 2015
Nov 30, 2015
Nov 30, 2015
Nov 30, 2015
Jul 7, 2015
Jul 7, 2015
Jul 7, 2015
Jul 7, 2015
Jul 7, 2015
Jul 7, 2015
Mar 20, 2015
Mar 20, 2015
Jan 15, 2014
Jan 15, 2014
Jan 15, 2014
Jan 15, 2014
Jan 15, 2014
Nov 20, 2013
Nov 15, 2013
Nov 15, 2013
Nov 15, 2013
Aug 20, 2013
Aug 13, 2013
Aug 13, 2013
Jul 17, 2013
Jul 17, 2013
Mar 17, 2012
Mar 17, 2012
Mar 16, 2012
Mar 16, 2012
Jan 25, 2012
Jan 24, 2012
Jan 20, 2012
Sep 20, 2011
Sep 20, 2011
Aug 8, 2009
Aug 8, 2009
Aug 7, 2009
Aug 7, 2009
Apr 7, 2009
Apr 2, 2009
Mar 13, 2009
Mar 13, 2009
May 30, 2005
May 4, 2005
May 4, 2005
Jul 6, 2004
Jul 1, 2004
Nov 20, 2003
Nov 19, 2003
Nov 18, 2003
Oct 28, 2003
Oct 28, 2003
Oct 27, 2003
Oct 27, 2003
Jun 18, 2003
Jun 18, 2003
Jun 12, 2003
May 15, 2003
May 8, 2003
May 8, 2003
May 8, 2003
Mar 17, 2003
Feb 14, 2003
Jan 31, 2003
Dec 5, 2002
Oct 30, 2002
Oct 24, 2002
Oct 24, 2002
Oct 2, 2002
Aug 26, 2002
Aug 26, 2002
Aug 26, 2002
Jun 4, 2002
Apr 2, 2002
Mar 28, 2002
Mar 26, 2002
Mar 26, 2002
Mar 18, 2002
Dec 18, 2001
Dec 18, 2001
Dec 18, 2001