Donny K. Samporna


Address: 701 Palomar Airport Road
Suite 230
Carlsbad, CA 92011

Phone: (858) 227-6636

Overview Experience Interests


Donny brings years of real-world engineering and business experience to help his clients strategically plan and secure their most profitable intellectual property rights, including patents and trademarks. He has firsthand experience with a plethora of technologies, including mechanical, electrical, and computer-implemented methods and systems. He also helps clients protect their brand and customer goodwill by acquiring and managing their trademark assets.

Donny is a registered patent attorney at the United States Patent and Trademark Office (USPTO). He earned his Juris Doctor from Thomas Jefferson School of Law, in San Diego, CA, cum laude, where he was an Intellectual Property Fellow. While at Thomas Jefferson, Donny was a member of Moot Court Honor Society, President of the School’s Intellectual Property Law Association, and an active member of the Student Bar Association. Donny earned his Bachelor of Science in Mechanical Engineering from the University of the Pacific, in Stockton, CA.

Donny is an assistant supervising attorney for Thomas Jefferson School of Law’s (TJSL) Patent and Trademark Clinics, where he brings his real-world experience to teach the practitioners of tomorrow. In doing so, he guides the law students in providing quality legal services to the local community on a pro bono basis.

Before joining Insigne, Donny worked at other San Diego firms focusing on patent and trademark prosecution and civil litigation, including spending two years as the Supervising Student Associate at TJSL’s Patent Clinic. Before pursuing his legal career, Donny was a lead design engineer focusing on electro-mechanical and rotational machinery and a property developer.

Donny volunteers as a Range Safety Officer (RSO) at South Bay Rod and Gun Club as a way of promoting safe and open opportunities to enjoy shooting sports, and has recently taken up competing in USPSA and IDPA matches.


Represented Evolusion Concepts, Inc. in a patent enforcement campaign against numerous defendants in cases involving California compliance devices for modern sporting rifles. Donny was instrumental in achieving a six-figure settlement for damages and an on-going royalty rate of 18.77% on the accused products including kits that contain collateral products. E.g., Evolusion Concepts, Inc. v. Cross Engineering, LLC, et al., Case No. 3:18-CV-0871-MSB (S.D. Cal.).

Represented a global telecommunications company in a fee dispute with its previous patent counsel, garnering a favorable settlement.

Represented a major men’s fashion brand in a patent infringement suit involving reinforced ratcheting belts, first-chairing the Markman hearing and prevailing on claim construction.

Represented a digital camera pioneer as a respondent in an Inter Partes Review (IPR) before the Patent Trial and Appeal Board (PTAB), securing a finding affirming the patent’s validity, even in the face of the PTAB’s rigorous scrutiny.

Represented an industry-leading cybersecurity company in a patent infringement case involving CAPTCHA technology, successfully arguing against a motion to dismiss and ultimately garnering a favorable settlement.

Secured an early favorable settlement in a case involving trigger connectors for Glock pistols.


When not in the office, Donny enjoys taking advantage of the amazing San Diego weather, riding his motorcycle through the canyons, playing golf, engaging in shooting sports, playing music, exploring the local craft brewery scene, playing board games and poker, and simply relaxing near the water. Donny plays bass in his band called the Innocent Bystanders, for which Donny secured a Federal trademark registration. The Band regularly plays venues in Southern California and most of the members are attorneys that practice different areas of law. Check out

Practice Areas
Technical Expertise

San Diego


J.D., Thomas Jefferson School of Law, cum laude
B.S., Mechanical Engineering, University of the Pacific

Bar and Court Admissions

Supreme Court of California
United States District Court for the Southern District of California
United States District Court for the Central District of California
United States District Court for the Northern District of California
United States Patent and Trademark Office