Foley & Lardner has hired intellectual property litigators Duane Mathiowetz and Rick Chang as partners in the firm's San Francisco and Silicon Valley offices. Both attorneys were previously partners at LeClairRyan, where they represented clients including the Taiwanese image sensor company PixArt Imaging Inc. and wind tunnel manufacturer Indoor Skydiving Germany GmbH.

Chang said Mathiowetz has been a mentor to him since 2000, when Chang joined Townsend and Townsend and Crew as an associate. Mathiowetz was then a partner at that firm, and the pair moved to Howrey together in 2003 to launch its San Francisco office. Chang went on to work at McDermott Will & Emery and as senior counsel to Apple, while Mathiowetz hopped from Pillsbury Winthrop Shaw Pittman to Schiff Hardin to Novak Druce, but the pair were reunited at LeClairRyan in 2015.

Foley's reputation for IP work and the size of its 70-litigator patent practice caught the lawyers' attention, they said. When the firm outlined its ambition to expand in California in the wake of the Supreme Court's TC Heartland decision, which will likely increase patent filings in the Northern District of California, Chang and Mathiowetz were sold on the move.