Patent No. EP1831545 (titled "Wind Turbine Comprising A Multiplied Redundancy Control System And Method Of Controlling A Wind Turbine") was filed by Vestas Wind Systems on Dec 30, 2004. The application was issued on Oct 14, 2015.

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
Mar 9, 2018
Mar 9, 2018
Mar 6, 2018
Jan 3, 2018
Dec 4, 2017
Dec 4, 2017
Dec 4, 2017
Dec 1, 2017
Nov 27, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 22, 2017
Nov 9, 2017
Nov 8, 2017
Nov 3, 2017
Nov 3, 2017
Nov 3, 2017
Nov 3, 2017
Nov 3, 2017
Nov 3, 2017
Oct 26, 2017
Oct 25, 2017
Oct 23, 2017
Oct 5, 2017
Oct 5, 2017
Sep 14, 2017
Sep 12, 2017
Sep 12, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 8, 2017
Sep 7, 2017
Sep 7, 2017
Sep 7, 2017
Sep 7, 2017
Sep 7, 2017
Sep 7, 2017
Sep 7, 2017
Sep 7, 2017
Sep 6, 2017
Sep 6, 2017
Sep 6, 2017
Aug 31, 2017
Aug 31, 2017
Feb 24, 2017
Feb 21, 2017
Feb 17, 2017
Feb 16, 2017
Feb 13, 2017
Feb 13, 2017
Feb 13, 2017
Feb 13, 2017
Feb 13, 2017
Feb 13, 2017
Feb 13, 2017
Jan 2, 2017
Dec 22, 2016
Dec 22, 2016
Dec 22, 2016
Aug 24, 2016
Aug 24, 2016
Jul 22, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Jul 13, 2016
Oct 14, 2015
Sep 17, 2015
Sep 4, 2015
Sep 4, 2015
Sep 4, 2015
Sep 4, 2015
Sep 4, 2015
Jun 25, 2015
Jun 25, 2015
May 29, 2015
May 29, 2015
May 29, 2015
May 26, 2015
May 26, 2015
May 26, 2015
May 26, 2015
May 15, 2015
May 15, 2015
Apr 23, 2015
Apr 23, 2015
Apr 23, 2015
Apr 23, 2015
Apr 23, 2015
Feb 18, 2015
Feb 18, 2015
Feb 18, 2015
Feb 18, 2015
Jun 28, 2012
May 15, 2012
May 15, 2012
Aug 5, 2011
Aug 5, 2011
Aug 5, 2011
Aug 5, 2011
Aug 5, 2011
Mar 30, 2011
Mar 30, 2011
Mar 3, 2011
Mar 2, 2011
Mar 18, 2009
Mar 18, 2009
Mar 18, 2009
Mar 18, 2009
Jan 23, 2009
Jan 20, 2009
Jan 20, 2009
Sep 24, 2008
Sep 24, 2008
Aug 16, 2007
Aug 7, 2007
Jul 11, 2007
Jul 11, 2007
Jun 21, 2007
Jun 21, 2007
Jun 21, 2007
Jun 21, 2007
May 25, 2007
May 22, 2007
May 22, 2007
May 22, 2007
May 22, 2007
May 22, 2007
May 22, 2007
May 22, 2007
May 22, 2007
May 22, 2007
May 11, 2007
May 4, 2007
May 1, 2007
May 1, 2007
Apr 25, 2007
Apr 25, 2007
Nov 27, 2006
Oct 31, 2006
Oct 31, 2006
Oct 27, 2006
Oct 27, 2006
Oct 27, 2006
Oct 25, 2006
Oct 25, 2006
Oct 25, 2006
Oct 25, 2006
Jul 6, 2006
Jul 6, 2006
Mar 14, 2005
Mar 14, 2005
Mar 14, 2005
Mar 14, 2005
Jan 14, 2005
Jan 14, 2005
Jan 14, 2005
Jan 14, 2005