Perkins, who joined Milbank from Clifford Chance in 2003 to head its IP group, was one of the highest-profile recruits to the US firm’s London office in recent years.
He will be joined at Arnold & Porter by counsel Christopher Stothers and associates Ben Clossick Thomson and Stephanie Hutchinson.
“Arnold & Porter has a dynamic and successful IP practice in the London office,” said Perkins. “I’m impressed by the firm’s overall commitment to IP and life sciences, and the calibre of lawyers with whom we’ll be working. Our team greatly looks forward to joining Arnold & Porter in London.”
Tim Frazer, head of the firm’s London office, added: “We have a vibrant and growing IP practice in London, and David ’s group will make an immense contribution to our strength in this area.”
Perkins’ departure leaves Julian Stait as the only partner in Milbank’s London litigation practice.