I agree with some if not most of the fundamental principles of Alice despite its somewhat ambiguous construction as of now.
Presumed is a patent issued pre-Alice, and post-Alice be found not meeting the standards per Alice. Many patents, including some describing generic computers, abstract ideas in the form of algorithms one theoretically is able to follow cognitively without any machines etc., were retrospectively invalidated.
I'm wondering if, at the PTAB, may invalidate a patent per an Appeal Brief, invalidate a patent in light of Alice, or does one have to go to a district court?