Thompson & Knight has expanded its intellectual property trial bench in Dallas by hiring three partners from Haynes and Boone in the latest move for the two Texas-based firms, each of which has seen some significant partner hires and losses this year.

Phillip Philbin, Jamie McDole and Michael Karson are now partners at Thompson & Knight. Bruce Sostek, the leader of Thompson & Knight’s Dallas office, knows Philbin well—for the last several years they have co-taught a patent litigation course at SMU Dedman School of Law—and they have long talked about practicing together.