Bunsow DeMory

Bunsow De Mory LLP is a nationally recognized intellectual property litigation boutique headquartered in Redwood City, California. The firm also maintains offices in Northern Virginia (Alexandria), Texas, and Washington, D.C.. With approximately 19 lawyers, Bunsow De Mory is consistently recognized for its specialized expertise, including rankings by Chambers & Partners for Patent Litigation, Managing IP as a Top Tier Firm, and inclusion in Best Lawyers and Benchmark Litigation as a Litigation Star.

The firm's patent litigation practice spans a diverse range of sophisticated technology areas. Its attorneys possess deep technical expertise, with many holding science or engineering degrees, covering fields such as semiconductors, artificial intelligence, DNA, mobile, automotive, telecommunications, fintech, and life sciences. While the firm appears as counsel on the defendant side in matters such as Synthego Corp. v. Agilent Techs., Inc., Bunsow De Mory explicitly focuses on plaintiff-side patent cases, representing IP owners against large technology companies and consistently achieving favorable results.

Bunsow De Mory has secured significant outcomes in high-stakes patent disputes. Most notably, in June 2025, the firm obtained a more than $110 million jury verdict for its client TOT Power Control against Apple in the District of Delaware, related to 3G technology. Other notable successes include a Federal Circuit reversal of a claim construction in Lambeth Magnetic Structures v. Seagate and a non-infringement victory for Acushnet in Callaway Golf Company v. Acushnet Company. The firm also served as lead counsel for Ericsson in patent lawsuits against Apple, culminating in a global patent license agreement.

Beyond district court litigation, Bunsow De Mory boasts a highly regarded practice before the Patent Trial and Appeal Board (PTAB). Patexia recognized the firm as the best performing law firm at the PTAB from July 2020 to June 2025, handling Inter Partes Review (IPR) and Post-Grant Review (PGR) proceedings for both petitioners and patent owners. Key partners leading the firm's robust IP litigation efforts include co-founder and Managing Partner Denise De Mory, who has litigated over 150 patent and intellectual property cases and dozens of IPR petitions, and Elizabeth Day, also ranked by Chambers & Partners for Patent Litigation.