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

Patrick E. Premo

Chair, Trade Secret Litigation

Partner, Litigation  

Mountain View 650.335.7963


Patrick Premo began his career at Fenwick & West in 1996 and has extensive experience litigating technology and life science cases from pre-litigation through trial and appeal. He has represented both plaintiffs and defendants in all stages of litigation, including emergency relief proceedings where he has successfully brought and defended applications for temporary restraining orders and motions for preliminary injunctions, in both federal and state courts.

From 2004 through 2008, Pat developed and co-chaired the firm’s IP & Technology Litigation Group, which focuses on leveraging the firm’s expertise in technology and life sciences litigation, specifically in the areas of trade secrets, copyright, trademark and unfair competition. He is currently leading the Litigation Group’s initiative to increase use of technology to significantly reduce costs, particularly in eDiscovery.

Examples of Pat's more recent representations include:

Patent and Unfair Competition

  • Successfully defended patent suit by competitor after client introduced a competing medical device. Our defense team won summary judgment of non-infringement and invalidity, while pursuing counterclaims for unfair competition to shutdown competitor's allegedly false and misleading comparative advertising campaign. Ultimately, after defeating all dispositive motions and preserving the counterclaims in their entirety, competitor agreed to a stipulated order to stop using the accused advertising materials and refrain from making the comparative safety claims, while it pursued an appeal of the patent case. Laryngeal Mask Company v. Ambu A/S (S.D. Cal., filed Oct. 2007).
  • Successfully litigated patent suit on behalf of The Regents of the University of California for infringement of 12 patents covering the Guglielmi Detachable Coil ("GDC"), a revolutionary medical device for treatment of brain aneurysms. Initially, dismissed the declaratory relief action filed in Wisconsin for lack of jurisdiction. In later-filed California suit, defeated antitrust counterclaims on summary judgment. Dismissed all other state law claims at the pleadings stage. Case ultimately resolved in October 2007 on the first day of trial in a manner favorable to The Regents. This helped lead the way to settlement of two related suits on terms that were equally satisfactory to client and its licensee. See The Regents of the University of California v. Micro Therapeutics, Inc. (N.D. Cal., filed Dec. 2003).

Trade Secret Litigation

  • Obtained emergency relief on behalf of client after learning former employee had disclosed highly confidential product demo software and internal training video to his new employer – a direct competitor. Defeated efforts to stay court case and force arbitration of the trade secret dispute at SuccessFactors' sole expense. Case settled soon afterwards on terms satisfactory to SuccessFactors. SuccessFactors v. Taleo (San Mateo Superior Court, filed June 2008).
  • Successfully enjoined competitor from proceeding with its first-filed lawsuit against Georgia resident on grounds that non-compete agreement was anti-competitive and unenforceable. BladeLogic v. Opsware (Mass. & Georgia state courts, filed Nov. 2005).

False Advertising, Trademark and Trade Dress Litigation

  • Obtained emergency relief to prevent further distribution of an "anonymous" hit piece broadly distributed over the Internet. In short order, exposed direct competitor as author of the offending material and immediately obtained a temporary restraining order based on claims for false advertising, trademark infringement, Computer Fraud & Abuse Act violations, and unfair competition. Received an even broader preliminary injunction based on additional evidence uncovered. See 544 F. Supp. 2d 975 (N.D. Cal. 2008). Blocked direct competitor’s attempt to file a second suit in Massachusetts through successful motion practice. Case ultimately resolved on terms satisfactory to client, including a stipulated permanent injunction. As part of settlement, direct competitor agreed to a permanent injunction and issued a press release admitting it created and distributed the PowerPoint presentation to customers and prospective customers. SuccessFactors v. Softscape (N.D. Cal., filed March 2008).
  • Defeated direct competitor's motion for preliminary injunction for alleged trade dress infringement. Suit involved thirteen causes of action, including trade secret, trade dress, breach of confidence, and unfair competition, among others. Case resolved soon afterwards on terms satisfactory to client after competitor lost preliminary injunction. Advance America v. Allied Cash Advance Financial (N.D. Cal., filed March 2001).

Prior to graduation, Pat worked as a judicial extern for Justice Franklin Elia of the California Court of Appeal, Sixth Appellate District.

Pat is also chair of the firm's Pro Bono Program and has been a member of the board of directors for a number of pro bono organizations, including Community Legal Services of East Palo Alto. He is an active member of the Santa Clara County Bar Association and chaired the Bar Association's Pro Bono Committee in 2008.

Publications and Presentations

  • Federal Copyright Law Preempts State Law Breach of Confidence Claims for Unauthorized Use of Works, Fenwick & West Litigation Alert (2010)
  • California’s Uniform Trade Secrets Act Preempts State Common Law Claims, Fenwick & West Litigation Alert (2009)
  • California Court Blocks Subpoenas Aimed At Bloggers' Source of Trade Secret Information, Privacy & Data Security Law Journal (September 2006)
  • Transforming Uses of Celebrity Likenesses Protected Under First Amendment, Fenwick & West Litigation Alert (2006)
  • Electronic Discovery Focus Of Pending Federal Rules Changes Approved By U.S. Supreme Court, Mealey's Emerging Toxic Torts (June 2006)
  • Presenter, Email: The Smoking Gun Discovery, Strafford Legal Teleconferences (2006)