What are the main member states of the PCT?

The following countries are members of the Paris Convention and not members of the PCT (24 countries):

Afghanistan, Andorra, Argentina, Bahamas, Bangladesh, Bhutan, Bolivia, Burundi, Congo (Gold), Guyana, Haiti, Vatican, Iraq, Jamaica, Lebanon, Mauritius, Nepal, Pakistan, Paraguay, Suriname, Tonga, Uruguay, Venezuela, Yemen

In addition to the above-mentioned Paris Convention and PCT member states In addition, the following 5 regions can be entered:

EP (Europe): Netherlands, Belgium, France, Cyprus, Greece, Ireland, Italy, Lithuania, Latvia, Monaco, Malta, Slovenia, Germany, Turkey , Albania, Austria, Bulgaria, Switzerland, Czech Republic, Denmark, Estonia, Spain, Finland, United Kingdom, Croatia, Hungary, Iceland, Liechtenstein, Luxembourg, North Macedonia, Norway, Poland, Portugal, Romania, Serbia, Sweden, Slovakia, San Marino ( 38; after authorization, you need to select a designated country to carry out the designated country authorization process; countries in blue font cannot be entered separately through the PCT, and can only be entered into Europe first and then designated)