Aimee P. Fagan

I'll research this attorney's background and the tracked case before writing the summary.

Let me verify the tracked case and her litigation history further.

Let me verify the status of the tracked district court case and the current firm naming.

Aimee P. Fagan — patent litigation practice summary

Focus areas. Fagan is a Dallas-based first-chair IP trial lawyer whose patent work concentrates on electronics, software, and emerging technologies, with a strong secondary emphasis on energy/oil-and-gas technology, medical devices, and wearable health-sensing systems. Her docket spans the major Texas patent venues (E.D. Tex., W.D. Tex., S.D. Tex.) as well as appeals, and she frequently pairs patent claims with trade secret, trademark, contract, and fraud theories. Public profiles describe her as lead trial counsel in technically complex infringement, invalidity, and damages matters.

Side preference. She is predominantly a defense-side litigator. Her single tracked appearance — Omni MedSci, Inc. v. Samsung Electronics Co. Ltd. et al. (E.D. Tex.) — is as lead counsel for the defendant group, and she has publicly stated that she "represent[s] defendants more often than plaintiffs," while noting prior-firm plaintiff-side experience. So the tracked record (0 plaintiff / 1 defendant) is consistent with her stated primary orientation, though she is not exclusively a defense lawyer.

Firm context and notable matters. Fagan spent roughly 13 years at McKool Smith before joining Sidley Austin as a Dallas partner in 2020, where she co-led the firm's IP litigation practice; the tracked Omni MedSci appearance is from that tenure. In April 2026 she moved to Winston & Strawn as a partner in its Dallas office (the U.S. arm now operates under the "Winston Taylor" banner following a June 1, 2026 combination). Her most-cited result is the defense win for Halliburton in Legacy Separators v. Halliburton Energy Services (S.D. Tex. 2020) — a take-nothing outcome on trade secret, contract, and fraud claims, with a favorable partial patent verdict and a hung jury on two remaining infringement claims (a patent retrial followed). She has also won an arbitration defense verdict for a Big Four accounting client and has represented Nexstar Media and Ernst & Young.

PTAB/IPR experience. The Omni MedSci dispute has generated an extensive PTAB docket (numerous Samsung-filed IPRs and PGRs, several instituted), and Fagan is a frequent commentator on PTAB practice, discretionary institution, and the shifting interplay between IPR and district court litigation. Note: the PTAB filings I could locate in that family list other counsel of record, so I cannot confirm from public sources that she personally serves as counsel in the IPR/PGR proceedings — treat her PTAB record as well-informed but not independently verified as appearances.

Bar/education. Admitted in Texas; J.D., SMU Dedman School of Law (1998); B.A., Louisiana State University (1994). These are consistently reported across firm and Chambers profiles. She is ranked in Chambers USA (Texas, IP), IAM Patent 1000, and Benchmark Litigation, and was named Managing IP's "Litigator of the Year – Texas" (2024). (Recognitions cited for context, not as endorsements.)

Caveat: the tracked case list reflects her Sidley-era appearance; her current firm is Winston & Strawn/Winston Taylor, per April 2026 reports.