Cooley has lured two more partners from Sheppard Mullin Richter & Hampton.

Corporate partners Kevin Rooney and Louis Lehot started work at Cooley’s Palo Alto, Calif., office Wednesday, becoming the fifth and sixth lawyers to join the Silicon Valley stalwart from Sheppard in the past month. Corporate partners C. Thomas Hopkins and Ian Smith were the first to move, switching to Cooley’s Los Angeles office in mid-February. They were joined by special counsel Peter Wenzel and associate Melika Martin this week, said Hopkins, who co-chaired Sheppard’s global corporate practice before his departure.