Amy L. Mahan

I'll research this attorney before writing the summary.

Let me dig deeper into her case history and PTAB work.

Amy L. Mahan — Patent Litigation Practice Summary

Specialty / focus areas. Dr. Mahan's practice centers on complex IP litigation in the life sciences, pharmaceutical, biotechnology, and medical technology sectors, with additional work in software and financial technology disputes. Web-sourced practice descriptions list patent infringement matters involving cellular immunotherapies, monoclonal antibody biologics, small-molecule pharmaceuticals, medical devices, and fluorescence-based diagnostics. Her tracked litigation work is consistent with a software/fintech dimension as well: she is listed on the defense team for Clover Network in CloudofChange, LLC v. Clover Network (W.D. Tex. / N.D. Cal.), a web-based point-of-sale software dispute, and appears in WilmerHale's teams for the PNC Bank/USAA and Apple/Optis patent matters. She also has transactional IP experience (portfolio strategy, FTO/validity opinions, licensing and collaboration agreements).

Side preference. Her tracked appearances are entirely defendant-side (0 plaintiff, 1 defendant), and the broader record confirms a defense orientation: she defends operating companies — Clover Network, PNC Bank, Apple, and (as PGR petitioner) Merck Sharp & Dohme — against patent holders including NPEs and competitors. No verified record of plaintiff-side or NPE/PAE assertion work.

Firm context. Mahan's tracked appearance is at Wilmer Cutler Pickering Hale and Dorr (counsel role). Public sources indicate she has since moved to Sidley Austin LLP, where she is listed as counsel in the IP Litigation group (Boston); Sidley is named in her November 2025 PTAB filing and she is identified as "Amy L. Mahan, Sidley Austin LLP" in the November 2025 Federal Circuit judgment in the CloudofChange appeals. USPTO Registration No. 75,997 appears across both firms' filings, confirming these are the same attorney.

Notable cases and outcomes. Verifiable results on matters she is credited as a team member include: CloudofChange v. Lightspeed Commerce / Clover Network — Federal Circuit Rule 36 affirmance (Nov. 12, 2025) upholding PTAB findings that the asserted POS patents were unpatentable, after final written decisions of unpatentability in several IPRs; PNC Bank/USAA mobile check-deposit litigation — a September 2022 Eastern District of Texas jury awarded USAA less than 1% of the $80.5M sought (no willfulness), followed by a June 2025 Federal Circuit reversal of roughly $223M in verdicts on § 101 grounds; and Apple/Optis Cellular — a June 2025 Federal Circuit vacatur of a $300M verdict (jury unanimity instruction) after an earlier non-infringement defense verdict. She was named among the WilmerHale teams recognized by The American Lawyer's Litigation Daily as "Litigators of the Week" (July 2025) for the PNC and Apple appellate wins. She was also a first-name team member on the WilmerHale Apple v. VirnetX-related Federal Circuit reversal (2023) per the firm's release. Her specific individual contribution to each is not attributable from public sources; her name appears in firm team rosters, not as lead counsel.

PTAB / IPR experience. Yes — she appears regularly in post-grant proceedings. Verified examples: Clover Network's IPRs against CloudofChange (IPR2022-01143 and related, including the appeals); the USAA IPR proceedings underlying the PNC appeals; and, as Sidley counsel, Merck Sharp & Dohme v. Halozyme (PGR2025-00009). She was listed as backup counsel on Regions Bank v. USAA (IPR2025-01326) before being removed in an October 2025 updated mandatory notice, consistent with her firm transition.

Bar / education. Admitted in Illinois and Massachusetts; registered before the USPTO (Reg. No. 75,997). J.D., University of Pennsylvania Law School (2017); Ph.D., Neuroscience, Emory University (2011); B.S., Trinity University (2006). (Sourced from her WilmerHale and Sidley profiles.)

Note: the authoritative case list contains only one tracked appearance (defendant side, WilmerHale, counsel), and that entry is untitled, so it cannot be tied to a specific matter by name. All case identifications above derive from firm press releases, Federal Circuit opinions, and PTAB filings rather than from the tracked list.