Kasowitz

I'll research the firm's public profile before writing.

Kasowitz — Patent Litigation Practice Summary

Firm overview. Kasowitz Benson Torres LLP — which shortened its name to Kasowitz LLP effective June 25, 2025 — is a New York–headquartered national litigation firm, with its principal office at 1633 Broadway. Its office footprint includes New York (HQ), Atlanta, Houston, Los Angeles, Miami, San Francisco, Silicon Valley/Redwood Shores, and Washington, DC (older directories also list Newark). It is a litigation-focused firm rather than a full-service BigLaw shop or a pure IP boutique: ILRG's 2025 profile lists roughly 233 attorneys and 88 partners, ranking it around #196 among the largest U.S. firms, and its own recruiting materials describe it as "one of the largest litigation firms in the country." Chambers USA ranks the firm and partner Jonathan K. Waldrop in Intellectual Property: Patent Litigation (California, Band 5); IAM Patent 1000 describes the group as a "trial-focused IP shop." (ILRG; Chambers IP profile; IAM Patent 1000)

IP litigation specialty. The patent group is anchored in Silicon Valley/Redwood Shores and built its reputation on electronics and software disputes rather than life sciences or mechanical arts. Firm and ranking sources identify recurring subject matter including interactive web technologies, video streaming and video-on-demand, cable/broadcast technology, mobile payments and mobile wallets, telecommunications and Wi-Fi/onboard connectivity (the Intellectual Ventures airline campaign asserts Wi-Fi and cloud/parallel-processing patents), semiconductors and antennas (ASUS matters), medical devices, and gaming systems. A separate Atlanta-rooted contingent historically brought pharma, biotech, trade secret, and ITC § 337 experience from Sutherland. (Kasowitz – Waldrop bio; IAM Patent 1000)

Side preference. The firm works both sides, and the structured appearance data here overstates the plaintiff tilt because it reflects only one tracked matter. That tracked matter — Intellectual Ventures I LLC v. Southwest Airlines Co. (W.D. Tex., later transferred to N.D. Tex.) — is plaintiff-side, with Jonathan K. Waldrop as lead counsel and roles recorded as lead counsel, co-lead, and attorney of record. But public sources show a substantial defense practice for operating companies: Chambers notes the firm "frequently represents major technology companies both on the plaintiff and defense side," and the group's docket highlights include defense wins for Google, Uber, ASUS, LG, Motorola, and Reddit. Recent plaintiff-side work is heavily weighted toward patent owners and assertion entities (Intellectual Ventures, Fintiv, MV3 Partners), which fits the firm's self-described comfort with "bet-the-company" patent disputes on either side. (Chambers USA; CourtListener – IV v. American Airlines)

Notable matters. The firm's most consequential public patent win is Fintiv, Inc. v. Apple Inc. (W.D. Tex.): Kasowitz defeated Apple's motion to transfer venue, then obtained the PTAB's first discretionary denial of an IPR petition based principally on the advanced stage of parallel district court litigation — the decision that produced the widely cited "Fintiv factors" and was made precedential. Marc E. Kasowitz served as lead trial counsel in the later stages. The firm also won a claim-construction victory for MV3 Partners against Roku (the case went to a defense verdict for Roku after trial, which the firm moved to challenge), and publicized defense results for Google, including a Delaware § 101 dismissal in Data Engine Technologies v. Google and summary judgment plus sanctions in SuperSpeed Software v. Google. The Intellectual Ventures airline campaign (Southwest, American Airlines) is ongoing and has been heavily contested, including a magistrate recommendation narrowing claims and foreclosing some pre-suit damages; the Southwest matter was transferred out of Judge Albright's W.D. Tex. docket to N.D. Tex. in October 2025. (Daily Journal profile; Kasowitz – Waldrop bio)

PTAB / IPR practice. Kasowitz's PTAB profile is most clearly established on the patent-owner side — discretionary-denial and institution-stage defense in the Fintiv line, plus patent-owner prosecution of the IV airline matters in which defendants have filed IPRs (e.g., IPR2025-00200, -00201, -00202; American Airlines IPR2025-00786; Tesla IPR2025-00343). The firm also coordinates district court, ITC, and PTAB strategy as part of its practice description. No public report reliably quantifies the firm's overall IPR/PGR filing volume, so no scale figure is asserted here. (Joint Case Readiness Status Report, IV v. Southwest; Kasowitz viewpoints)

Key partners. Jonathan K. Waldrop — chair of the IP group, Chambers USA Band 5 (California patent litigation), IAM Patent 1000, leads the firm's IP work overall. Marcus A. Barber — Redwood Shores partner focused on software/telecom infringement cases; Daily Journal "Top 40 Under 40" (2020); co-leads the Fintiv matter. Darcy L. Jones — IP litigation partner with a trade-secret component, also on the IV airline team. John W. Downing — Redwood Shores partner litigating the IV matters alongside Waldrop; Marc E. Kasowitz, the firm's managing partner, has served as lead trial counsel on the Fintiv case. Atlanta-based partners John L. North and Jeffrey J. Toney (pharma/biotech, ITC) and New York's Jack Minnear were historically identified with the group's non-technology side; current rosters should be confirmed against the firm's website. (Chambers lawyer profile; Daily Journal – Barber; Fintiv petition)