Study claims patent trolls cost US firms $29 billion last year - Slashgear

According to the study authors, actions by patent trolls last year saw 2150 companies having to mount 5842 defenses lawsuits. The study research also suggests that half of the patent defenses mounted last year came from companies earning less than $100 million a year making those companies much smaller than many of the names that pop to mind when we think of patent suits such as Apple, Samsung, and others.