Unfortunately, I don't believe that is correct. To the extent of my understanding, the vagueness doctrine applies only in some criminal law circumstances, while

Unfortunately, I don't believe that is correct. To the extent of my understanding, the vagueness doctrine applies only in some criminal law circumstances, while contract litigation would generally be within the realm of civil law, so it would be inapplicable. There may, however, be relief available under doctrines like that of unconscionability.