About Mark
Mark Trenner began his legal education at the University of Denver in the mid‑1990s and earned his J.D. in 1999, concentrating on intellectual property and patent law. He completed a program that emphasized the technical and procedural aspects of patents, training that would shape the next phase of his career. That early academic grounding in patent doctrine and practice set clear direction for his work after graduation.
After law school he moved into practice in Colorado. He joined the rolls of the Colorado Bar Association in 1999 and has maintained membership since then. Trenner also secured registration to practice before the United States Patent and Trademark Office, allowing him to represent inventors and companies on patent matters at the federal level. His credentials reflect both state licensure and USPTO registration.
Over the years he has built a practice centered on patent prosecution and client counseling. He prepares and files patent applications, manages interactions with examiners, and advises on patentability and portfolio strategy. He also assists clients on transactional matters such as licensing and technology transfers. His work tends to intersect legal, technical, and commercial considerations, requiring close attention to both claim drafting and business objectives.
He founded Trenner Law Office, LLC to serve startups, individual inventors and small businesses. The firm handles patent preparation and prosecution and offers opinions on clearance and patentability. Casework ranges from assisting first‑time inventors through the patenting process to helping established companies maintain and prune their patent portfolios. He emphasizes careful documentation and procedural compliance in work before the patent office.
Outside of client files, Trenner remains connected to the Colorado legal community through his long‑standing association membership. He keeps current on USPTO rules and patent law developments that affect prosecution tactics and filing strategies. As of 2026 he continues to practice at Trenner Law Office, LLC, representing clients in patent prosecution, patent counseling and related intellectual property matters.
