Veteran Apple designer Christopher Stringer is leaving the company after 21 years, The Information reports. Stringer has been involved in the creation of some of Apple’s most iconic products, including the first iPhones and iPads. He was also a crucial witness in Apple’s defense against Samsung’s claim that the company stole the iPhone design from them. Stringer is one of a handful of long-time employees who have left the design team after Jony Ive accepted a promotion and turned over day-to-day operations to Richard Howarth. Apple declined to comment on the move.