World Intellectual Property Organization

Amendments to the PCT Regulations Archive

  • July 1, 2014
  • January 1, 2013
  • July 1, 2012 
  • July 1, 2011 
  • July 1, 2010 
  • July 1, 2009 and other practice changes
  • PCT Supplementary International Search Service (January 1, 2009) 
  • January 1, 2009 
  • July 1, 2008 
  • April 1, 2007   
  • April 1, 2006   
  • April 1, 2005 
  • January 1, 2004   

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