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Bunsow De Mory

California

2027_BM US_Recommended Firm.svg
Key contacts
Managing Partner: Denise De Mory
Quick facts
Partners

13

Other qualified practitioners

8

Total number of practitioners

21

Total number of practitioners

21

Languages

English, Spanish, Mandarin, Taiwanes

Key practice areas
PTAB litigation
Copyright & related rights
Intellectual property
ITC litigation
Patent disputes
Trade mark disputes
Trade mark
Patent
IP transactions
Intellectual property disputes
Dispute resolution
Firm overview

Bunsow De Mory is a leading IP litigation and trial boutique firm based in Silicon Valley with an additional office in northern Virginia. The firm’s recent victories  have firmly cemented its position as one of the country’s elite patent trial firms.

Bunsow De Mory succeeds because of its singular focus: unwavering commitment to achieving its client’s goals, even against the odds. Firm lawyers don’t shy away from the most difficult challenges against the biggest technology companies in the world. They thrive on them.

The firm focuses on plaintiff-side patent cases, where clearing the hurdles to get to trial is rare, and winning at trial is even rarer. Yet, Bunsow De Mory continues to defy the odds, securing more than $250 million in verdicts and settlements in the last two years alone. 

Bunsow De Mory PTAB’s practice is second to none. Based on empirical studies of PTAB results, Patexia recently ranked Bunsow De Mory as the best performing law firm at the PTAB from July 2020 to June 2025.

The firm works on matters across a range of technologies and industries, including mobile automotive, telecommunications, artificial intelligence, fintech, and life sciences.

Legal experts have recognized the firm’s excellence. In addition to its recognition by Benchmark Litigation, the was also ranked as Highly Recommended for patent disputes by Managing IP and was listed in the Chambers USA guide for intellectual property—patent litigation.

Updated Dec 2025

Key practice areas
  • Intellectual property
Sector expertise
  • Technology and telecommunications
Key practice contacts & recent matter highlights

Denise De Mory
Intellectual property
ddemory@bdiplaw.com

Power Control, S.L. v.  Apple, Samsung, LG (D. Del.):

In June 2025, Bunsow De Mory secured the second largest patent damages verdict in the District of Delaware this year. After a three-day trial, a jury returned a $110,738,008 verdict for Bunsow De Mory client TOT Power Control against Apple. TOT Power Control alleged that Apple infringed two patents which claimed important technological improvements to 3G technology that enable significant power savings, greatly increasing a mobile phone’s available bandwidth for data. The jury found that Apple infringed one patent, found the patent valid, and awarded a $0.25 running royalty. 

Inmar Brand Solutions, Inc. v. Quotient Technology Inc. (D. Del., PTAB):

Bunsow De Mory represented Inmar, an innovative company that specializes in electronic coupon distribution and clearing. The firm guided Inmar to convert an infringement notice letter it received from a competitor into a major strategic patent win against a different competitor. Inmar obtained an exclusive license to the competitor’s patents and asserted them against Quotient Technologies. The firm secured a non-institution decision on one of Quotient’s inter partes review petitions filed with the Patent Trial & Appeal Board, a denial of Quotient’s attempt to stay the case pending the instituted IPRs, and a sweeping claim construction victory. The case settled favorably for Inmar in July 2025 in a confidential settlement.

Lambeth Magnetic Structures LLC v. Seagate Technologies (US) Holdings Inc. (W.D. Pa., Fed. Cir.):

Bunsow De Mory represents Lambeth Magnetic Structures in a long-running patent infringement case against Seagate. The firm secured a big win for LMS when the Federal Circuit reversed the trial court’s claim construction and issued a vacatur on the jury’s verdict against LMS on infringement. LMS’s case against Seagate dates to 2016 when Seagate for infringing a patent that claims a new enabling magnetic structure with a property called uniaxial anisotropy. Disk drive manufacturers use this invention to produce and sell next-generation hard drives with greatly enhanced storage capability. Bunsow De Mory will re-try LMS’s infringement case against Seagate.

Other offices

Alexandria
277 South Washington Street
Suite 210, #1088
22314, United States

Address:
701 El Camino Real, Redwood City, CA
94063, United States
Tel:650-351-7248 Email:Contact Us Web Address:https://bdiplaw.com/
2027 Edition
Dispute resolution
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Linked Reviews
Dispute Resolution
Bunsow De Mory continues to distinguish itself in California's intellectual property market through its work in complex patent disputes, particularly on the plaintiff side, where the Silicon Valley firm has secured notable victories against some of the technology sector's biggest players. The firm's standing is reinforced by a nationally recognized IP bench that includes co-founder Denise De Mory, Michael Flynn-O'Brien, and Marc Belloli.

Denise De Mory was added to Benchmark Litigation's Top 250 Women in Litigation this year. She recently led TOT Power Control to a trial victory against Apple in a patent infringement dispute concerning wireless communications technology, helping secure a jury award of approximately $111 million. Her broader reputation extends beyond trial work alone, with clients commending both her strategic acumen and practical guidance. As one client observed, "Denise is a super smart trial lawyer. She sees around corners and is always a delight to work with."

Fellow national star Michael Flynn-O'Brien receives widespread praise from both clients and peers for his strategic approach to patent litigation and his ability to align legal objectives with broader business considerations. One peer remarked that his "knowledge of the technical side of things while understanding business and clients is unmatched," while another described him as having done "an incredible job of balancing the business concerns with the legal realities." Clients similarly commend his strategic foresight, with one noting that "His ability to anticipate opposing counsel's moves and prepare countermeasures proactively was a consistent differentiator."

The depth of the firm's litigation bench is further evident in the work of national star Marc Belloli, whom one client described as "a strong litigator who can drill down on the important issues in a patent case." Together, De Mory, Flynn-O'Brien, and Belloli form the core of a team that continues to attract recognition for its handling of technically sophisticated patent disputes.

The firm's collaborative culture also resonates with market sources. As one peer observed, "Bunsow De Mory has a team of attorneys that each have unique talents that complement each other, which provides for a strong team, and each of them is strong on their own." Such feedback reflects the firm's reputation for combining deep technical knowledge, trial capability, and commercial awareness, qualities that continue to strengthen its position within California's competitive intellectual property litigation market.


Updated October 2026


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