Elizabeth Day

I'll research this attorney's professional background and practice.

Let me dig into case outcomes and her earlier career.

Let me verify a few case outcomes and her current firm status.

Elizabeth Day (docketed variously as M. Elizabeth Day / Margaret Elizabeth Day; Cal. Bar No. 177125) is a partner at Bunsow De Mory LLP in Redwood City, California, focusing on patent infringement litigation and related IP disputes in federal district courts and before the International Trade Commission. Her stated technical experience covers video compression and content delivery/interactive television, Wi-Fi and cellular communications, smartphones, semiconductor packaging, flash memory, computer networking and security, blockchain-related patents, two-way wireless charging, and mobile app software. She also handles damages and IP valuation/monetization work, which her firm bio ties to her role in clients' licensing-enforcement strategies.

Side preference. In the tracked set she appears exclusively for plaintiffs (8 of 8, zero defendant-side) — and specifically for patent owners and licensing/monetization entities asserting infringement claims: VideoLabs, Intellectual Ventures, Emerging Automotive, and Perceptive Automata. That is a plaintiff/patent-assertion orientation, not a defense-of-operating-companies practice. Public dockets do show some earlier defense-side work (e.g., representing Equinox Payments in Cyberfone Systems v. Pandigital and Berkeley Design Automation in Cadence Design Systems v. Berkeley Design Automation), so she is not strictly plaintiff-only, but the tracked record here is one-sided.

Firm context. She is currently at Bunsow De Mory. Previously she was a founding partner of Feinberg Day Alberti & Thompson LLP (2011; Menlo Park/Palo Alto area), the boutique launched by former Mayer Brown and DLA Piper partners — four of her tracked matters arise there; the firm later practiced as Feinberg Day Kramer Alberti Lim Tonkovich & Belloli. Before that she was a partner at DLA Piper US LLP. Her venue experience includes D. Del., E.D. Tex., W.D. Tex., E.D. Va., N.D. Cal., S.D.N.Y., D. Md., and the ITC.

Notable matters, PTAB, and credentials. Her most prominent tracked matters are the Intellectual Ventures campaigns — IV v. Capital One (E.D. Va./D. Md.), where the Federal Circuit affirmed §101 invalidity (792 F.3d 1363 (Fed. Cir. 2015); 850 F.3d 1332 (Fed. Cir. 2017)), and the IV actions against BBVA Compass and PNC. Her firm bio additionally credits her with back-to-back IV jury wins against Motorola Mobility, a $172.5M verdict in Wapp Tech v. Seattle Spinco (E.D. Tex.), and a favorable eve-of-trial settlement in VideoLabs v. Dell after all of Dell's IPR petitions were denied institution (those results are firm-sourced, not independently verified as her personal wins). She appears regularly in PTAB proceedings, including IPRs (Relink v. Tesla; Identitii v. J.P. Morgan Chase; Dell v. VideoLabs) and earlier covered-business-method reviews for Intellectual Ventures. Admitted in California (1995) and Indiana (2009), and before the Federal and Ninth Circuits; Dartmouth College B.A. (cum laude) and UC Davis J.D./M.B.A. (1994). Chambers USA (Band 5, IP patent litigation – California) and IAM Patent 1000 list her for patent litigation.