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

Phillip K. Decker

Associate, Intellectual Property  

Seattle 206.389.4534


Phillip Decker focuses his practice on technology transactions and patent and intellectual property litigation in the life sciences and technology industries.

Phil has represented clients across a variety of life sciences technologies, including immunoassay, protein expression/modulation, antibody, and small molecule therapeutics. His representative transactions include development and collaboration agreements, intellectual property licenses and material transfer agreements.

In addition to his transactional work, Phil’s experience includes Hatch-Waxman litigation, contract dispute arbitration, unfair imports litigation at the United States International Trade Commission, and inter partes review (IPR) proceedings before the United States Patent and Trademark Office.

Prior to joining Fenwick & West, Phil was an associate at a nationally recognized intellectual property boutique in Washington, D.C. He also served as Law Clerk to the Honorable Pauline Newman of the United States Court of Appeals for the Federal Circuit.

Phil received his J.D. from George Mason University School of Law in 2010. While attending law school, he served as a Legal Extern in the Judicial Committee of the United States House of Representatives during debates over the America Invents Act, and as an in-house summer associate in the patent department of a major pharmaceutical company. In 2005, Phil earned a double degree in Microbiology and International Studies from the University of Washington, with research focus on biofilm formation by the nosocomial pathogen Pseudomonas aeruginosa. Following graduation, Phil earned a research training award from the National Institutes of Health and conducted two years of post-baccalaureate research on the topic of bacterial gene regulation and completed graduate-level coursework in molecular immunology.

Phil is admitted to practice in Washington, Massachusetts and Washington D.C. He is also registered to practice before the United States Patent and Trademark Office.

Publications and Speaking Engagements:

  • Co-author. “The Bacteriophage T4 activator MotA and the beta-flap tip of RNA polymerase target the same set of sigma-70 C-terminal residues.” J. Biological Chemistry (2011).
  • Co-author, "The Common-Interest Privilege May Prevent Waiver of Attorney-Client Privilege in Documents Shared Between Litigants and IP-Licensing Consultants,” LES Insights (2011).
  • Speaker, “Intellectual Property Rights and Economic Development,” U.S.P.T.O. Global Intellectual Property Academy, Alexandria, VA (November 2005, April 2006 and January 2007).