WIPO-Administered Treaties
Statistics > Patent Cooperation Treaty
Total number of Contracting Parties: 147
| Year | Number of Contracting Parties |
|---|---|
| 1978 | 20 |
| 1980 | 30 |
| 1990 | 45 |
| 2000 | 108 |
| 2013 | 147 |
* 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).
