Longtime Fish & Richardson litigator Katherine Vidal is leaving the intellectual property-centric firm to spearhead Winston & Strawn’s ambitions in Silicon Valley.

Kathi Vidal.

Vidal will join 800-lawyer Winston as managing partner of its Menlo Park, California, office and is expected to become a member of the firm’s executive committee. Vidal said she will miss Fish after 20 years at the firm’s Silicon Valley office, but is determined to do big things at Winston, a global full-service firm that’s a relatively new entrant to the region.