No Michigan Firm Has Done It Longer Than Reising Ethington! This year marks the 150th anniversary of the firm solely practicing intellectual property law. Throughout its history, the firm has helped some of the most recognizable names in invention, people whose creativity has changed the world — Henry Ford, Ranson Olds, David Buick, and Mike Ilitch. The history of our firm is more than dates and names to us, it is our heritage. It is the continuous overlap of careers of hundreds of professionals who have passed down the patent craft from generation to generation for 150 years.
