Yeah, some of the requirements do not seem well thought out. I've passed the EIT and PE exams but not the FE exam. I have two engineering degrees, but let's say I had a math degree.(If I recall correctly you can take the EIT/FE/PE with hard science or math degrees.) I wouldn't qualify for the patent exam. That said, all these licensing exams are about jumping through hoops- find out the requirements, and finish them.