Barcelo, Harrison & Walker

Firm overview. Barceló, Harrison & Walker, LLP (BHW IP Law) is a boutique intellectual property firm headquartered in Newport Beach, CA, with additional offices in Palo Alto, CA, and Washington, DC (patentlaw.us). It is a small firm — four partners (Barceló, Harrison, Walker, and Garcia) — and is not an AmLaw firm. Its principal external ranking is inclusion in the inaugural Chambers Spotlight California 2025 Guide for Intellectual Property Law in Orange County, a Chambers program for small and mid-sized firms (firm announcement, April 2025).

IP litigation specialty. The firm describes itself as a technology-focused IP boutique handling patent prosecution, litigation, licensing, and post-grant proceedings, with all partners holding Stanford Law degrees plus advanced engineering credentials (patentlaw.us partner bios). Practice areas span computer hardware and software, semiconductors, communication networks, signal processing, video compression, medical devices, aerospace, and gaming. That technical profile tracks the firm's tracked matters, which center on cluster-computing and microprocessor technology: the Advanced Cluster Systems (ACS) campaign asserting cluster-computing patents against Intel (W.D. Tex. 7:24-cv-00245) and AMD (7:24-cv-00244), and the related Intel/AMD IPR challenges to those patents.

Side preference. The firm works both sides. Of the three tracked appearances, two are plaintiff-side for ACS (Reynaldo Barceló as backup counsel in ACS v. Intel and PHV counsel in ACS v. AMD) and one defendant-side (backup counsel in Intel v. ACS). Notably, Barceló's bio emphasizes defense work — "defended against charges of patent infringement for some of the world's best-known companies" in microprocessors, hard disk drives, and semiconductor packaging — while also asserting patents for plaintiffs. Given the small sample, the reliable characterization is a dual-side practice with a stated focus on defense of operating companies.

Notable cases or outcomes. The most prominent tracked matters are the ACS cluster-computing campaign in the Western District of Texas (before Judge Albright). Public PTAB records show the firm's patent-owner defense strategy working: Intel's IPR2025-00795 was denied institution on discretionary grounds (Aug. 14, 2025), and in the related IPR2025-00913 series, trial was instituted but AMD settled with ACS, with the parties moving to terminate that IPR in January 2026 (PTAB dockets). The underlying ACS v. Intel district case remained pending with trial scheduled for November 2026. Separately, the firm represented Valve Corp. on appeal in Ironburg Inventions v. Valve Corp. (Fed. Cir. No. 21-2297), a four-patent games-controller dispute that the Federal Circuit affirmed-in-part, vacated-in-part, and remanded (PatSnap case analysis).

PTAB / IPR practice. PTAB work is a genuine practice pillar, not incidental: the firm publicly states it represents both petitioners and patent owners in IPR, PGR, and ex parte reexamination (patentlaw.us post-grant proceedings page), and the ACS IPRs demonstrate hands-on patent-owner defense, including discretionary-denial advocacy and settlement-driven termination. The firm does not publish IPR filing volume, and no independent report of its PTAB caseload scale was located, so volume should be treated as unverified.

Key partners. The named partners are Reynaldo C. Barceló (a former Federal Circuit clerk, admitted as an engineer, lead patent counsel on the tracked matters), Joshua C. Harrison (Ph.D. engineer; former Irell & Manella litigation associate and Western Digital in-house counsel), David B. Walker (former NASA Goddard Chief Patent Counsel and BPAI Administrative Patent Judge), and Guadalupe M. Garcia — all partners per the firm website; Barceló, Harrison, and Walker are the firm's named principals.