John LeRoy

- FRAND & Other Licensing DisputesMake primary

- Intellectual Property Litigation(Primary Practice Areas)Primary

- Legal IT ConsultingMake primary

- Licensing & AgreementsMake primary

- Open Source ComplianceMake primary

- Post-Grant ProceedingsMake pr

John S. LeRoy is a Shareholder in Brooks Kushman’s Litigation practice and serves on the firm’s Executive Committee. His career has centered on leading complex intellectual property disputes, including patent, trade secret, and copyright litigation involving sophisticated technologies. He has played a key role in shaping the firm’s litigation capabilities, particularly in high-stakes matters involving automotive, software, and telecommunications technologies.

John is recognized for his leadership in standard-essential patent (SEP) litigation, where he regularly serves as first-chair counsel in high-value infringement cases. His work includes defending large-scale claims involving cellular and wireless technologies, often involving significant damages exposure. He leads both liability and damages strategy, as well as parallel post-grant proceedings, providing clients with an integrated and business-focused litigation approach.

- Federal Bar Association (Liaison, Intellectual Property Law Section, E.D. Mich. Chapter)

- United States Supreme Court

- Intellectual Property Owners (IPO) Association - Open Source Committee

- State Bar of Michigan

Co-Author, "Ford IPRs Instituted at Patent Trial and Appeal Board," Brooks Kushman Trending IP Blog, January 2026

Co-Author, "Brooks Kushman Secures Federal Circuit Affirmance for Ford Motor Company in Patent Dispute, Upholding PTAB Rulings that the Asserted Automobile Safety Patents are Unpatentable," Brooks Kushman Client Alerts, November 2025

Co-Author, “AI Integration, Copyright, and Privacy: Navigating the Challenges in Software Terms of Service,” Brooks Kushman Trending IP Blog, September 2024

Co-Author, "Director Vidal Issues Favorable Ruling in Ford IPR," Brooks Kushman Client Alerts, March 2024

Co-Author, "Taking the Initiative: Proactive Litigation Strategies in Intellectual Property Disputes," Brooks Kushman Trending IP Blog, January 2024

Co-Author, "Court Enters Final Judgement for $3 in Versata Software, Inc. v. Ford Motor Company," Brooks Kushman Client Alerts, November 2023

Co-Author, "Covered Business Method Patent Review Will End as of September 16, 2020." Client Alert, August 2020

Co-Author, “Open Source Software (OSS) – What Every Attorney Needs to Know,” Association of Corporate Counsel, October 2014

John has extensive experience representing clients in complex intellectual property litigation, with a particular focus on patent disputes involving software and electronic technologies. He has successfully tried patent cases in federal courts and has handled appeals at the Federal Circuit.

His practice includes substantial work in post-grant proceedings, including inter partes review, often in parallel with district court litigation. He has handled numerous IPR proceedings and integrates them into broader litigation strategy to challenge or defend patent validity.

In addition to his litigation work, John advises clients on open source software issues and leads the firm’s open source software practice. This includes counseling on compliance, enforcement risks, and strategic considerations tied to software licensing and intellectual property protection.

University of Dayton

Juris Doctorate

University of Michigan

M.S., Electrical Engineering

University of Buffalo

B.S., Mechanical Engineering

The Best Lawyers in America

Best Lawyers

2026

IAM Patent 1000

Intellectual Asset Management

2026

IP Star

Managing Intellectual Property

2025