After some setbacks to its Silicon Valley presence, New York’s Dewey & LeBoeuf has snatched a team of in-house lawyers from global biotech company Affymetrix.

The firm and Affymetrix announced Tuesday that Barbara Caulfield, formerly a federal judge for the Northern District of California and a top litigator with both Latham & Watkins and Orrick, Herrington & Sutcliffe, will head Dewey’s Silicon Valley office and will co-chair the firm’s intellectual property practice.