Thomas M. DaMario

Specialty / focus areas. Thomas M. DaMario is an intellectual-property litigator whose practice centers on patent infringement and trademark disputes in U.S. district courts, the ITC, and the PTAB (Benesch bio, beneschlaw.com). His tracked litigation docket is built around LED lighting technology — specifically Feit Electric's U.S. Patent No. 8,604,678 covering white-filament LED bulbs — but his firm bio lists broader technical experience in Internet technologies, wireless/cellular communications, semiconductor design and fabrication, power tools, and computer/networking systems. He also handles IP transactions, licensing, and freedom-to-operate/patentability opinions.

Side / client profile. The tracked docket shows DaMario consistently on Feit Electric's side across a multi-front enforcement campaign: as out-of-state counsel for plaintiff Feit in Feit Electric Co. v. Elong International USA, Inc. (N.D. Tex.), and as back-up counsel for Feit as defendant in Elong International USA, Inc. v. Feit Electric Co. and Savant Technologies LLC d/b/a GE Lighting v. Feit Electric Co. (the latter pair reflecting IPR/defensive posture). So his tracked work skews toward representing an operating-company patent owner that both asserts and defends its portfolio (1 plaintiff-side / 2 defendant-side appearances), rather than NPE/PAE work.

Firm context and notable matters. DaMario is a Senior Managing Associate in Benesch Friedlander Coplan & Aronoff's Chicago IP group; he joined after a stint as an associate at McDermott Will & Emery (World Trademark Review author profile; firm bio confirms prior "large international law firm"). In the Feit/Elong matter, the N.D. Tex. court issued a detailed claim-construction order on the '678 patent before the case was resolved by joint dismissal without prejudice in January 2026 (Justia; PatSnap case summary). Parallel IPRs brought by Savant/GE Lighting, LEDVANCE, Elong, and Xiamen Longstar against Feit's '678 patent were instituted in mid-2025, with DaMario appearing for patent owner Feit (PTAB filings). He was also on the Benesch team representing ASUSTeK in a Federal Circuit appeal of a $10.5M Texas jury verdict, as reported by Law360 in June 2025.

PTAB / IPR experience. DaMario appears regularly in PTAB proceedings. Beyond the Feit IPRs, PTAB records show him as back-up petitioner counsel in LifeScan Inc. v. Senseonics (IPR2025-00102) and as patent-owner counsel in IPR2025-01218–1220 correspondence on discretionary-denial briefing, and he publishes frequently on Federal Circuit IPR decisions (Benesch IP Update, National Law Review).

Bar / education. Licensed in Illinois (2018) and admitted to the USPTO (Reg. No. 77,142), the Federal Circuit, and the Northern and Eastern Districts of Texas and N.D. Illinois; J.D., DePaul University College of Law (2017, magna cum laude, Order of the Coif) and B.S. in electrical engineering, University of Illinois (2008); he is also a licensed Professional Engineer (Super Lawyers; Benesch bio). Note: his prosecution/registration practice (per USPTO records) skews to medical-device/life-sciences applicants, which is not reflected in the tracked litigation docket.