I have tried to search the Internet for this.
I am thinking of creating my own (commercial) RPG and I am also thinking of using the same set of attributes the popular Fallout games are using, also known as the SPECIAL attributes;
SPECIAL is the ruleset that powers all Fallout games.
The name "SPECIAL" is an acronym standing for the primary statistics in the system: Strength, Perception, Endurance, Charisma, Intelligence, Agility and Luck.
http://fallout.wikia.com/wiki/SPECIAL
Would there be any legal concerns, using these seven attributes in my own (commercial) RPG?