Patent No. EP1709404 (titled "An Apparatus And Method For Calibration Of Spectrophotometers") was filed by Artel on Jan 21, 2005. The application was issued on Jun 4, 2014.

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 |
|---|---|---|
| JENSEN & SON | Mar 5, 2015 | - |
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
Aug 24, 2015
Jul 10, 2015
Jul 10, 2015
Jul 7, 2015
Apr 10, 2015
Mar 13, 2015
Mar 13, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Mar 5, 2015
Nov 26, 2014
Nov 21, 2014
Jun 4, 2014
May 9, 2014
Apr 24, 2014
Apr 24, 2014
Apr 24, 2014
Apr 24, 2014
Apr 11, 2014
Apr 11, 2014
Apr 11, 2014
Apr 11, 2014
Mar 6, 2014
Feb 26, 2014
Feb 25, 2014
Feb 25, 2014
Feb 25, 2014
Feb 25, 2014
Feb 25, 2014
Feb 25, 2014
Feb 11, 2014
Dec 11, 2013
Oct 22, 2013
Oct 22, 2013
Oct 22, 2013
Oct 22, 2013
Jul 23, 2013
Jul 23, 2013
Jul 23, 2013
Jul 23, 2013
Jul 23, 2013
Mar 14, 2013
Mar 14, 2013
Jan 5, 2012
Jan 5, 2012
Jan 5, 2012
Jan 5, 2012
Jan 5, 2012
Jan 5, 2012
Nov 11, 2011
Nov 9, 2011
Nov 7, 2011
Nov 7, 2011
Jun 30, 2011
Jun 30, 2011
Feb 18, 2011
Feb 7, 2011
Feb 4, 2011
Feb 4, 2011
Mar 27, 2010
Mar 27, 2010
Mar 27, 2010
Mar 24, 2010
Mar 24, 2010
Mar 24, 2010
Mar 24, 2010
Nov 27, 2009
Nov 27, 2009
Nov 3, 2009
Oct 29, 2009
Aug 25, 2009
Aug 6, 2009
Aug 6, 2009
Sep 13, 2006
Sep 6, 2006
Aug 16, 2006
Jul 10, 2006
Jul 10, 2006
Jul 10, 2006
Jul 10, 2006
Jul 5, 2006
Jul 5, 2006
Jul 5, 2006
Jul 5, 2006
Jul 5, 2006
Jul 5, 2006
Jun 23, 2006
Apr 5, 2006
Mar 23, 2006
Mar 23, 2006
Aug 18, 2005
Aug 18, 2005
Aug 18, 2005
Aug 18, 2005