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 >

FLEX by Fenwick is the only service created by an AmLaw 100 firm that provides flexible and cost-effective solutions for interim in-house legal needs to high-growth companies.  MORE >

Fenwick & West handles significant cross-border legal and business issues for a wide range of technology and life sciences who operate internationally..  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:

  • Named Technology Group of the Year by Law360
  • Ranked #1 in the Americas for number of technology deals in 2015 by Mergermarket
  • Nearly 20 percent of Fenwick partners are ranked by Chambers
  • Consistently ranked among the top 10 law firms in the U.S. for diversity
  • Recognized as having top mentoring and pro bono programs by Euromoney


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

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

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

New York Office
1211 Avenue of the Americas
32nd Floor
New York, NY 10036

Shanghai Office
Unit 908, 9/F, Kerry Parkside Office
No. 1155 Fang Dian Road
Pudong New Area, Shanghai 201204
P.R. China
+86 21 8017 1200


About Our Mergers & Acquisitions Practice

Fenwick & West is one of the premier technology mergers and acquisitions practices in the nation, recently ranked by Bloomberg as one of the Top 10 M&A legal advisors in the U.S. – across all industries.

Our M&A group provides customized transaction services to meet each client's unique business needs, communications preferences and technology infrastructure requirements. We have an extensive group of experienced attorneys available for deals of any size and complexity. ​Our team includes attorneys specializing in technology transactions, patents and IP litigation. In addition, our attorneys have a broad range of expertise in domestic and international tax issues.

Across all industries, Fenwick consistently ranks among the top M&A firms in the United States. Recent rankings include:

  • Ranked by FactSet as one of the Top 5 M&A legal advisors in the U.S.; also ranked by FactSet as one of the Top 20 M&A legal advisors worldwide
  • Ranked by Mergermarket as one of the Top 10 M&A legal advisors for Technology deals in the world
  • Ranked by Bloomberg as one of the Top 10 M&A legal advisors in the U.S. – across all industries
  • Ranked by Thomson Reuters as one of the Top 10 M&A legal advisors in the U.S. and as one of the Top 25 M&A legal advisors worldwide
  • International Tax Review named Fenwick & West "Americas M&A Tax Firm of the Year"
  • Honored by Global M&A Network with the “2014 Technology Deal of the Year” for representation of Cisco in its $2.7B acquisition of SourceFire; also honored with the “2014 Emerging Markets Deal of the Year” for representation of Spreadtrum Communications in its $1.78B going private acquisition by Tsinghua Unigroup
  • Honored by Global M&A Network with the “2013 Global M&A Deal of the Year” for representation of Facebook in its $1B acquisition of Instagram; also honored with the “2013 Technology & Services Deal of the Year” for representation of Cisco in its $5B acquisition of NDS

In recent years, the firm has completed more than $400 billion worth of transactions, including significant acquisition programs for leading serial acquirers. Representative experience includes:

  • Cisco Systems in its $6.9B acquisition of Scientific-Atlanta, its $5B acquisition of NDS Group, its $3.2B tender offer for WebEx Communications, its $2.9B acquisition of Starent Networks, its $2.7B acquisition of Sourcefire, and over 100 other transactions for Cisco Systems
  • Facebook in its $2B acquisition of Oculus VR, its $1B acquisition of Instagram, and over 40 other transactions for Facebook
  • WhatsApp in its $19B acquisition by Facebook – one of the largest private technology acquisitions ever
  • VeriSign in its $21B acquisition of Network Solutions – one of the largest Internet deals ever – and more than 25 other VeriSign acquisitions
  • Symantec in its $13.5B acquisition of VERITAS – one of the largest software mergers ever – and more than 30 other Symantec acquisitions
  • Counsel in many of the most important strategic cross-border mergers including Spreadtrum Communications in its $1.78B take private acquisition by Tsinghua Unigroup, and counsel to the Special Committee of the Board of Directors of Giant Interactive Group in its $3B take-private acquisition by Giant Investment and Giant Merger Limited
  • Counsel to Data Domain in the bidding war between NetApp and EMC, leading to Data Domain's $2.4 acquisition by EMC
  • Counsel in many of the most important strategic mergers of software companies, including: SuccessFactors in its $3.4B acquisition by SAP, Macromedia in its $3.4B merger with Adobe Systems, VERITAS in its $3.4B acquisition of Seagate Software, Opsware in its $1.6B acquisition by Hewlett-Packard, MySQL in its $1B acquisition by Sun Microsystems and Intuit in its $1.35B acquisition of Digital Insight
  • Counsel for some of the largest life sciences industry mergers in recent years – including Agilent Technologies in its $1.5B acquisition of Varian, Ocular Sciences’ $1.2B acquisition by The Cooper Companies, SonoSite in its $995M acquisition by Fujifilm and Connetics in its $930M acquisition by Stiefel Laboratories