Can Grandparents take a father to court for custody of their grandson if they raised him for 11 years then his Dad took him?

It certainly sounds as if you have some standing given that the child was in an established custodial environment to seek custody as a third party. Unfortunately, WV does not have laws specifically related to grandparent rights. The law treats you as any other third party. Seek the counsel of an experienced child custody attorney. Good luck.