Grant Peters is a registered U.S. Patent Attorney and intellectual property law partner in the Chicago office of Barnes & Thornburg LLP. He counsels U.S. and international businesses on all aspects of the IP life cycle — from patent prosecution and trademark registration to IP licensing, enforcement, and monetization. He provides comprehensive IP counsel to large and middle-market companies across a wide variety of industries. Grant helps his clients protect, leverage, and commercialize patents, trademarks, copyrights, and trade secrets. His clients rely on coordinated U.S. and international intellectual property strategies that enhance portfolio value and strengthen market position.
Known for a diplomatic approach, thorough analysis, and 360-degree problem-solving, Grant delivers practical, cost-efficient intellectual property advice tailored to each client’s business objectives. He actively listens, educates clients on their options, and guides them in making informed legal decisions that balance their IP strategy, commercial goals, and risk management.
Grant serves as de facto IP general counsel for clients that have in-house legal leadership but need dedicated and experienced IP oversight — providing institutional knowledge and strategic continuity along with diverse experience, broad skills, scalability, and efficiency. For clients with dedicated in-house IP leadership, he serves as experienced complementary IP counsel — providing a team of IP attorneys to seamlessly and flexibly extend in-house capabilities on demand. Grant immerses himself in his clients’ businesses by researching, listening, and questioning to develop a thorough understanding of their operations, markets, competitors, and goals — grounding his advice in commercial reality.
Grant’s IP practice includes patent prosecution (mechanical, electrical, software, computer-implemented, system, and design patents), trademark prosecution and opposition proceedings, copyright registration and enforcement, and IP clearance and freedom-to-operate opinions. His practice also includes patent and trademark licensing, IP due diligence for mergers and acquisitions, portfolio audits, and internet-related IP matters including domain name disputes. He has filed and secured thousands of patents and trademarks worldwide, collaborating with a global network of foreign counsel to provide seamless international IP coverage and a single point of coordination regardless of jurisdiction. Grant also develops proactive IP risk management programs that help clients anticipate disputes and preserve competitive advantage.
Grant is a recognized authority on patent marking and virtual patent marking (VPM) under 35 U.S.C. § 287. Patent marking can be one of the highest-value, lowest-cost programs a patent owner can implement. He designs patent marking compliance strategies and programs, audits existing marking practices, and advises patent owners on the litigation and damages advantages of proper constructive notice. Proper patent marking can unlock up to six years of additional pre-suit damages and provide significant negotiation leverage in patent infringement actions. Grant regularly speaks and writes on the benefits of VPM compliance, developments in federal court guidance, and best practices for virtual patent marking program design and management. Separately, he delivers specialized knowledge in U.S. design patents and international industrial designs, guiding clients through strategy development, application preparation, prosecution, and enforcement.
Clients across a wide range of technology and market sectors rely on Grant’s counsel, including aerospace and defense, beverage and food technology, commercial architectural lighting, financial and insurance services, engineering and consulting services, green technology and sustainable products, and Native American enterprise IP matters. He advises clients ranging from startups to Fortune 500 companies on protecting and monetizing their intellectual property assets.
Credentials
Education
- Loyola University Chicago School of Law, J.D.
- University of Iowa, B.S., engineering
Bar Admissions
- Illinois
- U.S. Patent and Trademark Office
Court Admissions
- Illinois Central District Court
- Illinois Northern District Court
- U.S. Court of Appeals for the Federal Circuit
- U.S. Court of Appeals for the Seventh Circuit
- U.S. Supreme Court

