Roger Allen Denning

I'll research this attorney before drafting.

Let me verify the tracked case and a few additional details.

Roger A. Denning — Patent Litigation Practice Summary

Specialty / focus. Denning is a first-chair trial lawyer whose patent practice spans medical devices, pharmaceuticals (particularly Hatch-Waxman), computer software and encryption, semiconductors, network interfaces, and video compression. His firm bio describes him as an engineer by training (electrical engineering) and notes litigation experience across district courts in California, Texas, and Delaware, plus the ITC. His tracked matter with this dataset — Peer Global Inc. v. Apple Inc. (No. 7:26-cv-00033, W.D. Tex., Judge David Counts), a January 2026 suit accusing Apple's iOS 26/iPadOS 26 "Liquid Glass" interface of infringing three "selection ring" user-interface patents — fits the software/UI side of that portfolio.

Side preference. Denning is overwhelmingly a defense-side lawyer for operating companies. The tracked data shows 0 plaintiff-side and 1 defendant-side appearance, and that is consistent with his published record: he has represented Microsoft, Zix, W.L. Gore, Fresenius Medical Care, and brand pharmaceutical manufacturers as defendants or as respondents. He is not an NPE/PAE plaintiff's counsel. The principal counterexample is work asserting patents on behalf of patent owners — e.g., Zix Corp. v. Echoworx Corp. and several Hatch-Waxman actions for a brand pharmaceutical client where he obtained permanent injunctions keeping generics off the market.

Firm context and notable matters. Denning has been at Fish & Richardson since 2003 and has served as managing principal of the firm's San Diego office since 2009; he previously sat on the firm's management committee (2013–2017). He began his career at Brown & Bain in Phoenix. Notable results include Microsoft Corp. v. Lucent Technologies (S.D. Cal.), where he was lead trial counsel and the jury found no infringement and awarded no damages on a claim seeking over $400 million; Lucent Technologies v. Gateway (S.D. Cal.), where he was co-lead trial counsel on remand and post-trial JMOL briefing that reduced a damages award from roughly $356 million to $26 million; and Uniloc USA v. Microsoft (D.R.I.), a frequently cited damages case. He also obtained a defense verdict for Fresenius in a month-long False Claims Act trial (United States ex rel. Gonzalez v. Fresenius Medical Care, affirmed, 689 F.3d 470 (5th Cir. 2012)). The Peer Global matter is recent and appears to be at the pleading stage; no outcome is available.

PTAB / IPR. Yes — he appears regularly in post-grant proceedings. His own 2019 pro hac vice declaration lists prior appearances in numerous IPRs (including IPR2013-00511 through IPR2013-00516, IPR2016-01724/01735, IPR2017-00059/00061/00062/00272/00501/00504/00632/01789), and he argued for petitioner Intuitive Surgical in the IPR2018-01247/-01248/-01254 oral hearing against Ethicon. Note that Apple filed a separate IPR against Peer Global (IPR2026-00437, filed August 2026); I could not verify Denning's involvement in that particular petition from available sources.

Bar / education (sourced). Admitted in Arizona (1997) and California (2003), per his PTAB declaration; Super Lawyers reports a University of Chicago Law School J.D. (1997), while a Best Lawyers profile lists 2003 — the sources conflict on the graduation year, so treat it as uncertain. Fish's site and related bios also note an engineering degree.