Our Circulars The international patent application (PCT) The prior searches Consult the News relating to PCT Amendments relating to the refund of the fees for European patent and euro-PCT application PCT : Lack-of-unity objection Legal texts Patent Cooperation Treaty and Regulations PCT Applicant's Guide Table of the time limits for entering national/regional phase under PCT Chapters I and II as from April 1, 2002 (in pdf) Entering the national phases at 30/31 months without reqesting an international preliminary examination : list of the Offices for which the national laws do not allow to modify the time limits for entering the national phases (modification in force as from April 1, 2002 for the other Offices) (in pdf) Notice from the EPO dated 8 February 2006 concerning limitation of the EPO’s competence as a PCT authority Notice from the President of the EPO dated 30 November 2003 concerning refund of search fees Notice from the President of the EPO dated 26 November 2001 concerning limitation of the EPO's competence as a PCT authority See also WIPO esp@cenet