Eisner persuaded Rep Sonny Bono to pass a bill in congress that would protect the Disney name, and its properties with a copyright law that would last life+20 years in an attempt to keep the Disney name and it's properties untouchable by other companies and to make sure that the Disney name, and Mickey Mouse would never become part of the public domain. Anyone wanting to use anything Disney without approval would be breaking copyright infringement laws, and thus have to pay steep fines for retribution.
Amazingly, very strong copyright laws were passed as Congress may have been focusing on the extracurricular activities of our then President, Bill Clinton.
These copyright laws are still in effect and have been wreaking havoc on the business world at large. With the increase in technology over the last twenty years, many companies have acquired patents and copyrighted their inventions/merchandise to keep other companies from manufacturing or being able to use their software.
I agree that their should be a way to protect yourself and your intellectual property. I think Eisner was a genius in how he protected the Disney Brand and the Disney properties, so that no one can ever touch them.