Dustin F. Guzior

Dustin F. Guzior — Sullivan & Cromwell LLP (New York)

Specialty / focus. Guzior is a partner in S&C's Litigation Group and co-head of its Intellectual Property & Technology Litigation practice (with former USPTO Director Andrei Iancu). Per firm and Chambers profiles, his practice centers on patent and technology trials — patent infringement and licensing disputes, trade secret claims, and complex commercial/antitrust matters at the IP–antitrust intersection — in district courts, the ITC, the PTAB, and domestic and foreign arbitrations. Technology coverage is broad rather than single-industry: software and computer security/encryption, robotics and automated storage hardware, medical devices, audio/digital compression and standards-adjacent licensing, semiconductors, and biotech/pharma-adjacent trade secret work. He holds undergraduate degrees in physics and biological chemistry (Univ. of Chicago), which the firm cites as relevant to the technical subject matter. His published work (IAM's Patent Litigation Review, software-patent chapter, 2024) focuses on § 101 eligibility, means-plus-function construction, joint infringement, and extraterritorial damages for software.

Which side. His practice is predominantly defense-side for operating companies, despite the tracked record here. The single tracked appearance — Security First Innovations, LLC v. Google LLC (E.D. Va., 2023–24), back-up counsel — is plaintiff-side, representing a patent-owner/asserting entity, the 2022 assignee of Security First Corp.'s data-security and encryption portfolio (asserted against Google Cloud; three of Google's four IPRs were denied institution and the district case was stayed). That plaintiff-side role sits alongside a much larger defense portfolio: Ocado (ITC § 337, five patents), Bayer (ICC arbitration and Delaware Chancery), Cisco/Time Warner Cable against Rockstar, Dolby, LifeCell, Rocket Pharmaceuticals (DTSA), and a 2025 pro hac vice appearance for Ericsson in ASUS Technology Licensing v. AT&T (E.D. Tex.) — a standards/FRAND licensing dispute — which appears on the docket but not in the tracked list. He also does plaintiff-side patent-owner work for universities and licensors (Columbia, Masimo, Ocado's own assertion), so the better characterization is mixed but defense-weighted, with the tracked sample of one understating his volume.

Notable matters. Web-verified results include: co-lead trial counsel for Columbia University in Trustees of Columbia Univ. v. NortonLifeLock/Symantec (E.D. Va.) — unanimous willful-infringement verdict, $185.1M base damages, enhanced to ~$481M; the Federal Circuit vacated the judgment in March 2026, holding the claims abstract at Alice step one, invalidating the foreign-sales damages component, and vacating enhancement and fees (Nos. 2024-1243, -1244). Also: complete defense win for Ocado in ITC Inv. No. 337-TA-1228 (three AutoStore patents invalid, one not infringed; Commission affirmed March 2022), followed by a reported ~£200M/$250M settlement payment to Ocado in the parallel New Hampshire case; co-lead hearing counsel for BlackBerry in its JAMS arbitration against Qualcomm, resulting in a ~$940M award; and co-counsel (with Knobbe Martens) to Masimo in its $634M jury verdict against Apple (C.D. Cal., Nov. 2025). His Columbia and Ocado results were recognized by The American Lawyer's "Litigator of the Week" or runner-up seven times between 2022 and 2023.

PTAB/IPR and credentials. He appears regularly in PTAB proceedings, both defensively and on the patent-owner side — e.g., defending Columbia's patents in IPR, and IPR/PGR strategy and estoppel stipulations for Ocado in the AutoStore disputes; he has also spoken on PTAB practice at Fordham's IP conference. Chambers lists his education as Boston University School of Law (J.D., 2010) and the University of Chicago (B.A., 2006); he is based in New York. I did not find a source in this search that independently confirms his specific state bar admissions, so I'd omit that detail rather than state it.