"The goal of a patent troll (or it may be argued, a patent ‘dealer’) is typically to licence their patent to the alleged infringer. This after-the-fact licensing involves large money for the troll, for no contribution to the field. It has however been argued that ‘patent dealers’ support and encourage the patent system (and therefore innovation) by encouraging use of the patent process."
Source: http://www.lawdit.co.uk/reading_room/room/view_article.asp?name=../articles/9097-Patent-Tro


