Calfee, Halter & Griswold LLP At Calfee, the Intellectual Property Practice Group includes 39 dedicated IP attorneys-one of the largest groups of IP attorneys in Ohio. Our attorneys have 34 registrations with the United States Patent and Trademark Office, and we have had great success in trademark prosecution, litigation, opinions, and counseling.
Dinsmore & Shohl, LLP, is a Columbus-based, USA law firm offering first-rate trademark services to entities of all levels. With a nationwide team of attorneys numbering over 750, we serve a wide range of clients, including Fortune 500 companies, government agencies, professional firms, and individual entrepreneurs.