Attorney Biography

Donald E. Hasse is a partner in the law firm of Hasse & Nesbitt LLC. His practice concentrates on intellectual property matters, including the preparation and prosecution of patent applications and the preparation of freedom to market and patent infringement/validity opinions. He also advises clients on licensing and enforcement of intellectual property, patent and trade secret litigation, confidentiality and research agreements, and international patent matters. 

Mr. Hasse obtained a B.S. degree in Metallurgical Engineering and Material Science from the University of Notre Dame in 1975, and a J.D. degree from the University of South Carolina in 1978. Before entering private practice, he was Associate General Counsel-Patents at The Procter & Gamble Company, where he was employed as a patent attorney from 1978 to 2001.

He has worked in a wide variety of chemical and mechanical fields, including cleaning products, surfactants, enzymes, polymers, lubricants, pharmaceuticals, foods, medical devices, paper products, aircraft engine coatings and components, alloys, and conducting/magnetic materials.

Mr. Hasse is a member of the American Intellectual Property Law Association, the Cincinnati Intellectual Property Law Association, the Licensing Executives Society, and ASM International (material science and engineering technical society). He currently is Vice Chairman, and immediate past Chairman, of the Cincinnati Chapter of ASMI. He is admitted to practice before the United States Patent and Trademark Office, the State of Ohio, and the United States Court of Appeals for the Federal Circuit.