The "Farmville" developer Zynga must pay IBM 45 million US dollars for infringing patent rights, a US jury has ruled.

The internet is so core to how modern life operates that it's easy to forget how much of the technology that went into building the world wide web has patent protections. And some of those patents are still being enforced today.

Big Blue’s Prodigy from the 1980s comes back to haunt FarmVille giant IBM's patent farm has yielded another bumper crop, with a Delaware jury awarding Big Blue $45 million in damages from mobile games maker Zynga.