Nelson, Richard R.; Cohen, Wesley M.; Walsh, John P. - National Bureau of Economic Research (NBER) - 2000
motives to patent indicate that firms patent for reasons that often extend beyond directly profiting from a patented … innovation through either its commercialization or licensing. In addition to the prevention of copying, the most prominent … motives for patenting include the prevention of rivals from patenting related inventions (i.e., patent blocking'), the use of …