World Intellectual Property Organization

WIPO-Administered Treaties

Statistics > Patent Cooperation Treaty

Total number of Contracting Parties: 148

List of Contracting Parties*

YearNumber of Contracting Parties
197820
198030
199045
2000108
2014148

*   The statistics are calculated up to the end of the current year (the total number of contracting parties may differ slightly when an entry into force date occurs in the following year).

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