Chinese technology companies targeted by US trade sanctions responded by ramping up their own scientific research, increasing scientific citations in their patent applications by 72% on average, according to a study published Thursday in the journal Science.
The study shows that Chinese companies moved to conduct their own research after being placed on the US Entity List, which aims to slow China's technological progress while safeguarding American technology. The list was launched in 2018 at the height of geopolitical tensions between the US and China.
An analysis of United States Patent and Trademark Office data showed that science-linked patents granted to Chinese firms increased 13.4-fold between 2010 and 2022, compared with a 1.3-fold rise for their US counterparts.
Each of the sanctioned companies added an average of 0.988 patents citing domestic science, 0.277 citing foreign science in aggregate, 0.197 citing US science, and 0.265 citing non-US foreign science per year, the researchers wrote in the journal Science.
The analyses "reveal that US trade sanctions have generated consequences that US policy-makers may not have fully anticipated," the researchers wrote in their abstract.
Despite the rapid growth, the researchers noted that Chinese firms still lag behind in terms of the scientific depth of their studies.
"Chinese firms still remain lagging behind U.S. firms in the intensity with which they incorporate science into patenting," the researchers said.



