Mr. Warn's practice has included all aspects of patent application, prosecution and maintenance of patents in the United States and foreign countries. He has significant experience in managing and evaluating portfolios of patents and patent applications for companies.

His legal practice has also included litigation in the areas of trademark counterfeiting and infringement, patent infringement, trade secrets, unfair competition and copyright infringement.

His applied chemical art patent experience has included areas such as polymer and electrophoretic coatings, electroplating baths and systems, circuit board plating systems, ink resist compositions, epoxies, lamination systems for vehicle panels, SMC compositions, metallurgical brazing materials and processes, cementatious compositions, pyrolysis processes and purification of by-products, diamond brazing, ophthalmic dyes, waste treatment systems, volatile filtration systems and deodorant compositions.

His applied mechanical and electrical patent experience has included areas such as complex automotive component assemblies, clutch brake units, vehicle trim strip assemblies, automotive interiors, vehicle glass run channels, fluid quick connectors, biomedical devices, automotive fuel control systems, solenoid valves, transmission control systems, vehicle mirror assemblies, software controls for T.V. control boxes, powder coating, welding and vehicle painting assemblies.

Mr. Warn has been in private practice as an attorney for over 20 years. In 2000, he left his position as a principal of Harness, Dickey and Pierce to form his own law firm. He then formed Warn Partners P.C. He is admitted to practice in Michigan, Federal and State Courts, before the United States Patent and Trademark Office, and the United States Court of Appeals for the Sixth Circuit and the Federal Circuit.

Prior to entering the legal field, Mr. Warn worked for Consumers Power Company conducting chemical and radiological tests for nuclear power plant operation. He holds a Bachelor of Arts degree with majors in both Chemistry and Business Administration from Hope College, and a Juris Doctor degree from the University of Detroit School of Law.

Mr. Warn is a helicopter and fixed wing pilot and enjoys shooting sports and other outdoor hunting activities.