Henderson, who runs companies that have sued many of the largest technology companies over patents on everything from answering machines to video game technology, needed to convince patent officials that he had invented the device before another patent covering similar technology was granted.
The disputed patents include three covering design - including the exterior look of the device - and a 'list scrolling patent' which relates to how users view documents.
In previous tours in 2009, the battalion lost Lance Corporal Chris Harkett when he was killed by an improvised explosive device (IED) as he provided covering fire on a Taliban stronghold near Musa Qala.