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Are you John S. LeRoy?
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Quick answer
John S. LeRoy is an attorney based in Royal Oak, MICHIGAN. The practice focuses on IP and Patent.
- Based in
- Royal Oak, MICHIGAN
- Experience
- attorney
- Known for
- IP · Patent
- Handles IP and Patent matters from Royal Oak, MICHIGAN.
- Recognized with Lawyer of the Year — Litigation - Intellectual Property (Detroit) (2017).
About John S. LeRoy: John S. LeRoy is an attorney based in Royal Oak, MICHIGAN. The practice focuses on IP and Patent.
Areas of practice
Practice focus
John S. LeRoy represents clients in Royal Oak, Michigan across the following areas of law. Each area links to other verified attorneys with the same focus.
Biography
About John S. LeRoy
John LeRoy is a highly skilled litigation professional. He uses his electrical and mechanical engineering background, and two decades of intellectual property litigation experience, to represent his clients in high-tech legal disputes and complex licensing negotiations.
John’s practice focuses on patent, trade secret and copyright litigation involving software, electronics, and mechanical systems. With over 20 years of experience, a Master’s degree in electrical engineering, and a Bachelor’s degree in mechanical engineering, he has successfully represented clients in many different industries. He focuses on efficiently resolving litigation disputes outside of the courtroom, leaving the jury trial as a “last resort.” And in the courtroom, John has won, and successfully defended against, multiple “$100+ million dollar” jury trials (and related appeals) involving complex technology and intellectual property claims.
Leveraging his extensive software litigation experience, John leads the firm’s FRAND licensing and Open Source Software audit and compliance practice. With respect to FRAND licensing, John works with automotive OEMs and suppliers to address licensing standard essential patents for wireless communication technology. John also advises companies regarding effective use of open source software in their commercial products. He helps companies develop customized corporate policies and strategies for compliance with applicable open source license terms. John’s team manages source code audits and works closely with software developers and business managers to properly navigate the various open source license terms. John’s team has undertaken the audit-and-advice service on complex systems in the automotive, consumer electronics, medical device, and computer industries.
John is devoted to his clients’ business interests. He brings a creative approach to his practice to solve the most complex issues his clients face. For example, John worked with several automotive companies to create the SmartDeviceLink Consortium, a thriving new organization of automotive companies managing an open source platform for communication between smart devices and automobiles.
John is admitted to practice before the United States Supreme Court, Federal Circuit Court of Appeals, the Sixth Circuit Court of Appeals, and the U.S. District Courts in the Eastern and Western District of Michigan, the Eastern District of Texas, the Western District of Wisconsin, and Colorado. John is also a registered patent attorney, and is authorized to practice before the U.S. Patent Office.
John holds a Master’s Degree in Electrical Engineering from the University of Michigan, and an undergraduate degree in Mechanical Engineering from the University of Buffalo, where he graduated cum laude. John’s background in both electrical and mechanical engineering allows him to handle patent cases involving many different technologies.
John is a regular guest lecturer on Patent Fundamentals at the University of Michigan. John has also personally handled six pro bono civil actions, including a pro bono jury trial.
Outside the office, John enjoys fishing and boating with his family in northern Michigan, playing ice hockey, and racing at the M1 Concourse. He is also a Pack Master for his local scout pack, which according to John, makes IP litigation look easy. Charities John regularly supports through donation and service include Alternatives for Girls, St. Jude, Gleaners Food Bank, and his local humane society.
Credentials
Education
University of Dayton
J.D. · 2000
Jurisdictions
Bar admissions
Michigan, United Sta
ACTIVE
Recognition
Awards & honors
Lawyer of the Year — Litigation - Intellectual Property (Detroit)
2017
Best Lawyers in America — Litigation - Intellectual Property
2026
Best Lawyers in America — Litigation - Patent
2026
Best Lawyers in America — Additional Areas of Practice:
2026
Best Lawyers in America — Patent Law
2026
Best Lawyers in America — Awards:
2026
Best Lawyers in America — Best Laywers in America, 2015
2026
Best Lawyers in America — "Top Lawyer," DBusiness Magazine, 2013, 2015
2026
Best Lawyers in America — Michigan Super Lawyers, Intellectual Property, 2014
2026
Best Lawyers in America — "Rising Star," Michigan Super Lawyers, Intellectual Property, 2008-2010, 2014
2026
Best Lawyers in America — "Up & Coming Laywer," Michigan Lawyers Weekly, 2008
2026
Locations
Office locations
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Schedule your consultationFrequently asked
Common questions
What areas of law does John S. LeRoy practice?
John S. LeRoy focuses on IP and Patent.
Where is John S. LeRoy located?
John S. LeRoy primarily serves clients in Royal Oak, Michigan, with an office at 150 W. Second St., Suite 400N.
Is John S. LeRoy a verified attorney?
John S. LeRoy's profile is listed but has not yet been claimed by the attorney. Verification status is pending.
How can I schedule a consultation with John S. LeRoy?
You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 248-358-4400.
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