Exclusive data visualisation: Japanese firm biggest PCT filer

In collaboration with patent analytics company Patent-Pilot, WIPR is delighted to publish a striking ‘chart race’ showing the total number of international patent applications by law firms over the last 40 years.

The results show that since 1988, the title of ‘world’s top filer’ of Patent Cooperation Treaty applications has swapped from Sweden’s AWA and Zacco in the 1990s to US-based Fish & Richardson in the 2000s, before Japan’s Shiga International Patent Office swiftly rises to first place.