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For more than four decades, Fenwick & West LLP has helped some of the world’s most recognized companies become, and remain, market leaders. From emerging enterprises to large public corporations, our clients are leaders in the technology, life sciences and cleantech sectors and are fundamentally changing the world through rapid innovation.  MORE >

Fenwick & West was founded in 1972 in the heart of Silicon Valley—before “Silicon Valley” existed—by four visionary lawyers who left a top-tier New York law firm to pursue their shared belief that technology would revolutionize the business world and to pioneer the legal work for those technological innovations. In order to be most effective, they decided they needed to move to a location close to primary research and technology development. These four attorneys opened their first office in downtown Palo Alto, and Fenwick became one of the first technology law firms in the world.  MORE >

From our founding in 1972, Fenwick has been committed to promoting diversity and inclusion both within our firm and throughout the legal profession. For almost four decades, the firm has actively promoted an open and inclusive work environment and committed significant resources towards improving our diversity efforts at every level.  MORE >

At Fenwick, we are proud of our commitment to the community and to our culture of making a difference in the lives of individuals and organizations in the communities where we live and work. We recognize that providing legal services is not only an essential part of our professional responsibility, but also an excellent opportunity for our attorneys to gain valuable practical experience, learn new areas of the law and contribute to the community.  MORE >

Year after year, Fenwick & West is honored for excellence in the legal profession. Many of our attorneys are recognized as leaders in their respective fields, and our Corporate, Tax, Litigation and Intellectual Property Practice Groups consistently receive top national and international rankings, including:

  • Nearly 15 percent of Fenwick partners named America's Leading Lawyers for Business by Chambers USA and Chambers Global
  • Selected as a "Go-To" law firm by in-house legal departments at Fortune 500 companies in Corporate Counsel magazine
  • Named to The National Law Journal's inaugural "Intellectual Property Hot List" for outstanding patent, copyright, trademark and IP litigation services

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We take sustainability very seriously at Fenwick. Like many of our clients, we are adopting policies that reduce consumption and waste, and improve efficiency. By using technologies developed by a number of our cleantech clients, we are at the forefront of implementing sustainable policies and practices that minimize environmental impact. In fact, Fenwick has earned recognition in several areas as one of the top US law firms for implementing sustainable business practices.  MORE >

At Fenwick, we have a passion for excellence and innovation that mirrors our client base. Our firm is making revolutionary changes to the practice of law through substantial investments in proprietary technology tools and processes—allowing us to deliver best-in-class legal services more effectively.   MORE >

Mountain View Office
Silicon Valley Center
801 California Street
Mountain View, CA 94041
650.988.8500

San Francisco Office
555 California Street
12th Floor
San Francisco, CA 94104
415.875.2300

Seattle Office
1191 Second Avenue
10th Floor
Seattle, WA 98101
206.389.4510

Shanghai Office
36/F, Room 3690, Tower 2
Shanghai IFC
8 Century Avenue, Pudong
Shanghai 200120, China
+86 21 6062 6104

Tax Litigation

About Our Tax Litigation Practice

Our tax attorneys represent Fortune 500 companies as well as other companies in tax disputes in the United States Tax Court, the Federal Court of Claims, and various federal circuit courts of appeals. We have represented our corporate clients in numerous leading tax cases, involving industry-wide issues and deficiencies in the hundreds of millions of dollars. We have handled more than 70 cases in United States Tax Court, as well as dozens of state tax cases. Our tax clients (including 100 Fortune 500 companies) represent every geographic area of the United States, as well as a number of foreign countries. We also have extensive experience in resolving tax controversies before they reach the courts.

Our tax attorneys recently won a tax victory for CBS in the U.S. Court of Federal Claims—securing summary judgment for our client. We are also currently representing other large multinational corporations in the US Tax Court. Additionally, the firm won landmark Ninth Circuit and Tax Court cases for Xilinx relating to cost-sharing. The final, favorable resolution of the Xilinx transfer pricing case — cited by The Wall Street Journal as “the biggest tax case in the last 20 years” — affirmed on appeal to the 9th Circuit.