North America

With strong North American roots originating in Chicago in 1853, Winston & Strawn serves businesses—from Fortune 500 corporations and financial institutions to small and midsize companies—from across America. In the 1970s, our law firm began expanding beyond Chicago and today has offices in Charlotte, Dallas, Houston, Los Angeles, New York, San Francisco, Silicon Valley, and Washington, D.C.

Our established presence across North America allows our attorneys to efficiently and effectively meet our clients’ legal needs. With the most recent openings in Dallas and Silicon Valley to serve clients in intellectual property, commercial litigation, and corporate and financial matters, to expanding our presence in New York to better assist clients with their financial services needs, we have the experience to advance our clients’ business objectives in the United States and abroad.

With nearly 900 attorneys across the United States, we work together to resolve challenging deals and complex cases. We are proud of our people, the interesting matters we handle, and the impressive clients we serve.


Silicon Valley

Winston & Strawn LLP
275 Middlefield Road
Suite 205
Menlo Park, CA 94025
Phone: +1 650-858-6500
Fax: +1 650-858-6550


Winston & Strawn’s Silicon Valley law office was opened in 2013 with the goal of serving clients with headquarters or significant operations in the area. Under the new leadership of Kathi Vidal, an established Valley tech litigator, the office is strategically positioned to expand its offerings.

Drawing from the firm’s deep bench strength and global network of resources, Winston’s Silicon Valley office counsels clients across a variety of industries, including the semiconductor, computer hardware and software, telecommunications, life sciences and pharmaceutical industry sectors. 

Our Silicon Valley-based corporate lawyers represent both growth-stage companies, as well as established public companies, with their financing transactions and M&A activities. Additionally, drawing from the firm’s global network of private equity attorneys, Winston assists private equity funds in establishing, managing, structuring, and negotiating their investments.

Winston’s Silicon Valley lawyers have served on the Northern District of California’s Rules Committee, on the Board of the Federal Circuit Bar Association, and have litigated extensively in the Northern District of California, in local and regional courts, the International Trade Commission, other Federal Courts, and the U.S.P.T.O. This experience uniquely positions them to advise and assist both individuals and companies with any defensive or offensive strategy or disputes. From developing initial patent prosecution and IP strategy to obtaining patents, trademarks and copyrights to litigating multi-venue cases, including in the Patent Office, we team with clients to achieve results.



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