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Amendments to the PCT Regulations (since April 1, 2002)

  • Archive
  • January 1, 2026 PPT
  • July 1, 2025 PPT
  • July 1, 2024 PPT
  • July 1, 2022
  • July 1, 2020
  • July 1, 2019
  • July 1, 2018
  • July 1, 2017
  • July 1, 2016
  • July 1, 2015
  • 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 FAQs    
  • April 1, 2006 
  • April 1, 2005 
  • January 1, 2004 
  • January 1, 2003:  Rule 49.6: Reinstatement of Rights
  • April 1, 2002:  Article 22(1): Effects of modification of this time limit

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