Where can I find the most up-to-date list of PCT Contracting States?

The most current list of PCT Contracting States can be found on the World Intellectual Property Organization (WIPO) website. The MPEP Section 1817 provides direct links to these resources:

An updated list of PCT Contracting States is available from WIPO’s website ( www.wipo.int/pct/guide/en/gdvol1/annexes/annexa/ax_a.pdf or www.wipo.int/pct/en/pct_contracting_states.html ).

You can access the list in two formats:

  • PDF format: This provides a detailed list that may include additional information about each contracting state.
  • Web page format: This offers an easily accessible and potentially more frequently updated list of PCT member states.

It’s important to check these official sources regularly, as the list of PCT Contracting States can change when new countries join the treaty.

To learn more:

Tags: contracting states, international patents, patent resources, PCT, Wipo