It was easy to lose a copyright. As of 1989, new copyright law is simplified. Federal protection is national. Whereas, State protection is limited to area in the State where the mark has been used. BUT prior State use or registration is not preempted by subsequent federal registration.
Marks are to aid the consumer, rather than serve the interests of business.
Marks are valid as long as they are used. In late 1996, Congress adopted a federal criminal statute on international industrial espionage. There is a wide variation by State. Subject matter nearly unlimited. Trade secrets need not be exclusive.