Mark Hamilton


Four Seagate
Eighth Floor
Toledo, Ohio 43604


Mark Hamilton is an inventor, registered patent attorney, and a member of the firm’s Intellectual Property group.  Prior to joining Marshall Melhorn, Mark worked in research and development and as in-house IP counsel. Mark serves a client base ranging from Fortune 500 companies and regional companies to local innovators. 

In his patent practice, he counsels inventors, product managers, R&D managers, and senior management on a wide variety of issues including securing and enforcing patent rights and patent strategy.  His patent practice also includes preparation and prosecution of foreign and domestic patent applications and performing patent due diligence.

In his trademark practice, he focuses on strategic counseling, clearance, and obtaining protection for his clients.

Professional / Community

  • Former President of the Toledo Intellectual Property Law Association
  • Leadership Toledo Graduate


J.D., University of Toledo College of Law
B.S., Chemical Engineering, The Ohio State University


United States Supreme Court
United States Patent and Trademark Office
United States District Court, Northern District of Ohio