Apple warned Samsung about patent infringement in August 2010

from an article by Rick Merritt at EETimes:

Apple’s chief patent counsel, Richard “Chip” Lutton, made the presentation, excerpted below, to unnamed Samsung executives on August 4, 2010, Teksler said. Lutton reportedly left Apple earlier this year to work with former Apple exec Tony Fadell’s startup Nest on patent litigation with Honeywell.

See Slideshow: Inside Apple, Samsung patent talks