Zack Faigen practices complex civil litigation in state and federal court, representing clients in a wide range of cases, including securities and other class action litigation, shareholder derivative actions, antitrust lawsuits, trade secret cases, contract disputes and fraud claims.
Lawdragon Honors
| Honor | Year | Practice |
|---|---|---|
| The 2026 Lawdragon 500 Leading Litigators in America | 2026 | Securities Litigation, Class Actions, Antitrust |
| The 2025 Lawdragon 500 X – The Next Generation | 2025 | Litigation |
Faigen has represented clients in numerous matters, including:
- Paradigm Operations LP in multiple securities class actions centered around digital assets and blockchain protocols
- Airlines for America in a challenge to a City of San Francisco ordinance on constitutional and federal preemption grounds
- Rocket Lab USA, Inc. in a federal securities class action and follow-on derivative action after a stock drop following a short-seller report
- a former executive of Beyond Meat, Inc. in a putative securities class action and related shareholder derivative action alleging false and misleading statements over a multiyear period
- Keurig Dr. Pepper and American Bottling Co. in an alleged breach of contract action
- RTI Infrastructure, RTI Solutions and several of its executives in multijurisdictional litigation involving a variety of tort and contract claims
- Credit Acceptance Corp. in an antitrust suit stemming from a patent dispute associated with computer programming and AI-related issues
- The Conrad N. Hilton Foundation in a probate action seeking to invalidate a $3 billion bequest to the charity
- Cheetah Mobile Inc., a China-based mobile and computer applications developer, in multiple federal securities actions arising out of alleged misstatements related to a business dispute involving Google mobile ads
- Armstrong Flooring in a putative federal securities class action
- Questcor Pharmaceuticals, Inc. (now Mallinckrodt Pharmaceuticals) in a federal securities class action
Faigen is committed to pro bono work, having represented clients in matters ranging from immigration defense to tenant eviction cases to First Amendment challenges.