Patent Cooperation Treaty Yearly Review – 2020
The International Patent System
Publication year: 2020
DOI: English
![](https://www.wipo.int/edocs/pubdocs/en/cover/wipo_pub_901_2020.jpg)
Comprehensive facts, figures and analysis of the international patent system. Special theme: The top 50 PCT clusters
Publication year: 2020
DOI: English
Comprehensive facts, figures and analysis of the international patent system. Special theme: The top 50 PCT clusters