Daymon Jeffrey Rambin

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Daymon Jeffrey Rambin — Patent Litigation Summary

Focus areas. Rambin's tracked patent work is as a local-counsel presence in the Eastern District of Texas, and the broader docket pattern visible in public records confirms that role across dozens of plaintiff-side patent suits. The two tracked matters — Fundamental Innovation Systems International LLC v. Samsung Electronics and FISI v. ZTE — concern USB battery charging and power-management patents (the Fischer and Veselic families, covering USB adapters and charging circuits for mobile devices). Beyond those, his name appears as counsel in patent suits spanning data compression (Realtime Data/IXO), voicemail systems (Klausner Technologies), WLAN/Wi-Fi standard technology (Commonwealth Scientific and Industrial Research Organisation v. Verizon Wireless), location-tracking hardware (PerdiemCo), education software (Solocron Education), and telecom/media devices (Guardian Media Technologies, Mantis Communications). The common thread is asserted patents in consumer electronics, telecom, and software, handled from the Marshall/Tyler courts.

Side preference. Overwhelmingly plaintiff-side. The authoritative count is 2 plaintiff-side appearances and 0 defendant-side, both as local counsel. Public dockets show this is representative of a much larger pattern of representing NPE/PAE plaintiffs — FISI, Realtime Data (d/b/a IXO), Klausner, St. Isidore Research, IPVX, Guardian Media, and CSIRO among them — rather than defending operating companies. At least one defense-side appearance exists (PerdiemCo, LLC v. Industrack, LLC, for Teletrac/Navman), so the practice is not exclusively plaintiff-side, but the volume clearly runs one direction.

Firm context. Rambin is affiliated with Capshaw DeRieux LLP, the Gladewater/Longview, Texas firm (Sidney Calvin Capshaw III and Elizabeth L. DeRieux) that is a fixture of E.D. Tex. patent litigation as local counsel; his tracked appearances are through that firm. State Bar and Martindale records separately list him with The Rambin Firm in Tyler, Texas and with Fairchild, Price, Haley & Smith, L.L.P. in Nacogdoches, indicating a general civil-litigation practice with a substantial patent local-counsel component rather than a dedicated IP boutique.

Notable matters and outcomes. FISI v. Samsung Electronics (No. 2:17-cv-00145, E.D. Tex.) produced a January 31, 2018 claim construction order construing "USB" and related terms in the asserted Fischer/Veselic patents; the case settled. FISI v. ZTE (filed 2:17-cv-00124, E.D. Tex., then transferred to N.D. Tex. as 3:17-cv-01827) was litigated through claim construction and summary-judgment briefing. These were part of a broad FISI campaign that also named LG and Huawei. I could not verify any trial verdict, Federal Circuit appeal, or dollar recovery attributable to Rambin personally; his role in these matters was local counsel.

PTAB / IPR experience. Caution here: the FISI IPRs (e.g., IPR2018-00215, -00274, -00276, -00425, -00479, -00683) were handled by Irell & Manella for the patent owner and by Kirkland & Ellis / McDermott Will & Emery for petitioners — not by Rambin. His name appears in PTAB public records primarily as the E.D. Tex. counsel of record whose filings were submitted as exhibits, and as an "attorney to be noticed" on certain petitions, which is consistent with a local-counsel role. I did not find verified evidence that he served as lead or backup counsel in a substantive IPR/PGR proceeding, so this should not be characterized as established PTAB practice.

Bar / education. Licensed in Texas since November 4, 1994 (State Bar No. 00791478); admitted to the E.D., S.D., and N.D. of Texas and the Fifth Circuit (2000). Baylor University J.D. (1994); Texas A&M University B.A. (1991), per Martindale. No public disciplinary history reported. I found no confirmation of U.S. Patent and Trademark Office registration as a patent attorney.