Patent trolls were dealt a hard blow recently with a US court ruling that a company can only be sued for unlawful infringement on patent rights in the country where the business resides and is incorporated. For thirty odd years, patent trolls have been making a killing by trolling after enterprises that they deem guilty of the patent infringement sin. They're a special breed of entrepreneurs cum opportunists who thrive on suing alleged errant companies in order to earn hefty rewards.

For patent trolls, the days are gone when they can run after the big fish in the pond. The new challenge that the court just added meant chasing perceived Dirty Harries in their bailiwicks where they have full access to an unlimited legal arsenal. Unless the new law were repealed, patent trolls could soon become a dying breed.