Lichtenberg, Frank - 2002
change in health-related areas. Reported counts are based on “Triadic Patent Families”, that is sets of patents covering a … single invention, filed altogether in Europe, Japan and the US. There were nearly 40 000 health-related patent families filed … in the 1988-1995 period, which is 16% of the total number of patent families, with a majority (58%) of Medical …