In the past two months, Baker Botts has added five partners in Northern California, where the Texas-based firm has offices in San Francisco and Palo Alto.

The latest is Michael Torosian, a former corporate partner at Pillsbury Winthrop Shaw Pittman, who joined the firm Monday. His arrival was preceded by litigators Cheryl Cauley and Jonathan Patchen, who joined from Taylor & Patchen, a litigation firm Patchen founded. Lily Chinn, managing partner of Katten Muchin Rosenman’s San Francisco office, also joined Baker Botts along with her colleague Matt Baker. The two partners are both experienced in handling environmental litigation and investigations.