Erik S. Maurer

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

Let me verify the tracked Nike v. Puma matter and dig into notable outcomes.

Let me check outcomes for these matters and any Federal Circuit activity.

Erik S. Maurer — Banner & Witcoff (Chicago) · USPTO Reg. No. 48,648

Specialty / focus. Maurer's practice centers on IP litigation and counseling at the intersection of industrial design and brand protection — design patents, trade dress, trademarks, and Section 337/ITC work, with utility-patent litigation in the mechanical/consumer-product space. His most visible matters involve footwear and athletic apparel (Nike's Flyknit knit-upper and Air technologies, shoe-sole and shoe-upper designs). Prosecution-side work under his registration number spans a broader range — Nike, Comcast, Brother, YETI, BOE Technology, Capital One, SolarEdge, ASM IP, Citrix — indicating electronics/software and mechanical exposure beyond the footwear docket. Firm materials describe experience ranging "from fitness products to architectural lighting."

Side preference. The tracked data show a single appearance, on the plaintiff side (Nike as patent owner), so the sample does not establish a defense or NPE/PAE focus. In practice he is a mixed-side litigator: his firm bio states he represents both plaintiff and defendant perspectives, and his D. Mass. and PTAB work for Nike is plaintiff/patent-owner enforcement against competitor operating companies (Puma, Skechers, adidas) rather than assertion-side NPE work. He is not an in-house attorney.

Firm context. Maurer has practiced at Banner & Witcoff, Ltd. since 2001 and is a shareholder; in January 2025 he was elected to the firm's board of directors. There is no indication of prior law-firm experience — before law school he worked at the U.S. Environmental Protection Agency and in environmental engineering. He is also an adjunct professor at Northwestern Pritzker School of Law, teaching patent trial practice, and a contributing author to the ABA's Patent Trial Advocacy Casebook (2d ed.).

Notable matters and PTAB experience. PTAB work is a genuine strength, not incidental: Patexia's 2019 IPR Intelligence Report ranked him among the top five best-performing attorneys representing patent owners, and the 2020 report placed him among the top 100 in that category. He was on the Banner Witcoff team that defeated all 15 Skechers IPR challenges to Nike's design patents (2016–2018), including backup counsel of record on the Nike patent-owner side of the Skechers petitions (e.g., IPR2016-01043–01045) and examining Skechers' expert in IPR2017-00620. In the tracked Nike, Inc. v. Puma North America, Inc., No. 1:18-cv-10876-LTS (D. Mass.), Nike asserted seven footwear patents (including U.S. 8,266,749, 9,078,488 and 6,973,746) against Puma's Proknit/Speed Netfit/Jamming lines; the court denied Puma's Alice §101 and willfulness dismissal motion in October 2018, and the case resolved by confidential settlement around January 2020, with Puma's parallel IPR on the '746 patent (IPR2019-01043) jointly dismissed and the district court claims dismissed with prejudice. One caveat: contemporaneous reporting from that case identifies Aaron P. Bowling as Banner Witcoff's lead attorney for Nike, so Maurer's specific role there is not independently confirmed beyond the tracked appearance.

Bar / education. B.S., Biology, University of Illinois at Urbana-Champaign (1996); J.D., cum laude, Order of the Coif, Northwestern University School of Law (2001); admitted in Illinois (2001) and before the USPTO, the Federal Circuit, Second and Seventh Circuits, the U.S. Supreme Court, and several Illinois/Wisconsin district courts.

Note on sourcing: the Georgetown Law adjunct reference in one directory (MoreLaw) conflicts with his firm bio listing Northwestern and may be outdated; no independent confirmation of the Georgetown appointment was found.