ITC is a venerable institution which started its activity back to 1955. The dates and location of previous ITC Congresses are as follows:

• ITC 23: 6-8 September 2011, San Francisco, USA
• ITC 22: 7-9 September 2010, Amsterdam, Netherlands
• ITC 21: 15-17 September 2009, Paris, France
• ITC 20: 17-21 June 2007, Ottawa, Canada
• ITC 19: 29 August - 2 September 2005, Beijing, China
• ITC 18: 31 August - 5 September 2003, Berlin, Germany,
• ITC 17: 2-7 December 2001, Salvador da Bahia, Brazil
• ITC 16: 7-11 June 1999, Edinburgh, UK
• ITC 15: 22-27 June 1997, Washington D.C., USA
• ITC 14: 6-10 June 1994, Antibes - Juan-les-Pins, France
• ITC 13: 19-26 June 1991, Copenhagen, Denmark
• ITC 12: 1-8 June 1988, Turin, Italy
• ITC 11: 5-11 September 1985, Kyoto, Japan,
• ITC 10: 8-15 June 1983, Montreal, Canada
• ITC 9: 16-24 October 1979, Torremolinos, Spain,
• ITC 8: 10-17 November 1976, Melbourne, Australia
• ITC 7: 13-20 June 1973, Stockholm, Sweden
• ITC 6: 9-15 September 1970, Munich, Germany
• ITC 5: 14-20 June 1967, New-York, USA
• ITC 4: 15-21 July 1964, London, UK
• ITC 3: 11-16 September 1961, Paris, France
• ITC 2: 7-11 July 1958, The Hague, The Netherlands
• ITC 1: 20-23 June 1955, Copenhagen, Denmark