1) Impeachment, if Congress feels strongly enough that the judges of the FC have breached their duty to uphold the law (as SCOTUS rulings are binding law upon lower courts).

2) SCOTUS cannot do anything except to rehear FC cases...but it can change internal procedures and court rules so that, for example, all patent cases are automatically granted review by SCOTUS upon application by either party, etc. (SCOTUS cannot do away with the requirement that parties request review, as that is a procedural requirement set forth by law.)