Despite difficult economic conditions, international patent filings under the WIPO-administered Patent Cooperation Treaty (PCT) set a new record in 2011 with 181,900 applications – a growth of 10.7% on 2010 and the fastest growth since 2005. China, Japan and the United States of America (US) accounted for 82% of the total growth. Chinese telecommunications company ZTE Corporation was the biggest filer of PCT applications in 2011. Among the top filing countries, PCT applications from China (+33.4%), Japan (+21%), Canada (+8.3%), the Republic of Korea (+8%) and the US (+8%) saw the fastest growth in 2011.
Source: WIPO http://www.wipo.int/sme.