Dennis Brown, Registered Patent Attorney

Dennis D. Brown is a registered patent attorney who has been helping clients in Oklahoma and clients from other states and internationally with their intellectual property needs for more than three decades.  Dennis' areas of practice include patents, trademarks, copyrights, trade secrets, litigation, licensing, infringement and invalidity analyses, opinion writing, and due diligence related to the purchase and sale of intellectual property assets and businesses.  Prior to attending law school, Dennis also obtained six years of valuable "real world" experience as a process engineer for a Fortune 100 company.


  • J.D., University of Tulsa College of Law, with honors, 1989
  • Master of Business Administration, Oklahoma State University, 1985
  • B.S. Chemical Engineering, Texas A&M University, Magna Cum Laude, 1980

Current Bar and Court Admissions

  • Registered to practice before the U.S. Patent and Trademark Office, 1989
  • Admitted to the Oklahoma Bar, 1989
  • U.S. District Courts for the Northern, Western, and Eastern Districts of Oklahoma
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Supreme Court


  • Martindale Hubbell AV Rating
  • Best Lawyers – Oklahoma
  • Oklahoma Super Lawyers