William Vieth

I'll research this attorney before drafting.

William A. Vieth — patent litigation summary

Specialty / technology focus. Vieth is an intellectual property litigator at Desmarais LLP in New York (230 Park Avenue), whose docket footprint sits in computer, networking, and consumer-electronics patent disputes rather than life sciences or mechanical art. Public filings place him on matters involving IBM enterprise hardware and software (IBM v. Zillow Group, W.D. Wash.; IBM v. Zynga, D. Del.), video-streaming and codec technology (the Nokia/Paramount dispute over HEVC patents), and automated warehousing technology (Opex). His PTAB appearance was in a deposition defense involving expert testimony on storage/retrieval systems. Desmarais is a technology-litigation boutique, so his practice is concentrated in complex, technology-driven IP cases tried in Delaware, the Eastern/Western Districts of Texas, and the Western District of Washington.

Side preference. The tracked database reflects a defense-side posture — 0 plaintiff appearances, 1 defendant appearance, as counsel — and the one tracked matter (Nokia Technologies Oy v. Paramount) does have him on the defense/respondent side. That said, the tracked list is clearly incomplete relative to the public record: filings also show him appearing for IBM as plaintiff, and a Desmarais team including Vieth appeared in the Intellectual Ventures v. HP litigation in the Waco Division of W.D. Tex. (party alignment in that filing should be confirmed before relying on it). He also appears on the patent-owner side in an IPR. On the available evidence he is best characterized as a firm-side litigator who works both plaintiff- and defense-side matters rather than a dedicated NPE/PAE prosecutor or an operating-company-only defender — though the public record for him is thin and the tracked data lean defendant.

Firm context. Desmarais LLP (New York), where he has appeared as counsel since at least 2020–2021 (e.g., the IBM/Zillow matter); he is identified in directory listings as an associate at the firm. No prior firm history or in-house role was verifiable from the sources reviewed, and no current in-house affiliation appears.

Notable matters and PTAB experience. His most prominent tracked case, Nokia Technologies Oy v. Paramount Skydance Corp. (D. Del., No. 1:25-cv-01054), is part of Nokia's multi-jurisdiction video-streaming/HEVC licensing campaign filed in August 2025; Paramount responded with parallel proceedings, including a UK action seeking a FRAND determination, and the Delaware docket shows a stipulation of dismissal and termination of the case in March 2026. Other appearances include IBM's patent suits against Zillow and Zynga, and Exotec Product France SAS v. Opex Corp. (IPR2024-00850), where he appeared on behalf of patent owner Opex. His PTAB presence is limited to that proceeding — there is no evidence he is a regular IPR/PGR practitioner on the scale of the firm's PTAB-focused partners. A pro hac vice motion under the name "William A. V…" also appears in the Apple Inc. v. Masimo Corp. docket (D. Del.); that attribution is unconfirmed and should be verified.

Bar / education. Not reliably sourced in the materials reviewed; no bar admissions, law school, or clerkship information could be confirmed, so none is stated here. Note also that the "Vieth" names appearing in patent-owner filings (Reinhold and Elaine Vieth) and in older bar directories (H. Mark Vieth) are unrelated individuals.