My DS was a biter at that age too. He also had a spell of biting around 9 to 10 months and again around 14 months. I looked like I was being abused - my arms were covered in bruises. Nothing I did made him stop. It was as simple as , he had the impulse to bite and not the impulse control to stop it.
In hind sight, I can roughly match up major teething times with the biting spells. I really think that started it, however, as I say that, 18 month old DS has started up again. More teeth? or has he learned that it gets my attention to bite me? I think maybe both. He will walk up to my leg while I'm cooking or changing clothes and chomp my leg. Now, at 18 months when he puts his face against my leg or arm and I see him open up to chomp down, a stern "don't bite me. No teeth, kisses only" will curb the behavior. At 12 months, really nothing worked.
Not reacting is probably the best way to keep it from becoming an attention getting habit, but that is really hard to do - those tiny teeth HURT!!
Sorry no good advice, but hopefully it will be short lived.