When Richard Ross and his band of real estate lawyers broke away from Squire, Sanders & Dempsey to help establish a Phoenix office for Sonnenschein Nath & Rosenthal, the move marked the end of a 17-year relationship between Ross and his old firm.

At 54, Ross had risen through the ranks at Squire Sanders to become head of the 804-attorney firm’s hospitality practice, and leaving it was an emotional two-year process, he said.