Appeal Decisions of B P A I
35 U.S.C. §146 permits an applicant to appeal from a final decision of the Board of Patent Appeals and Interferences to a federal district court and/or the Federal Circuit.
Most appeals from the Board are taken directly to the Federal Circuit, but in some cases, especially those in which an evidentiary hearing (which may include expert testimony and demonstration) is desired, an appeal to the district court may be preferable (from which decision a further appeal can be taken to the Federal Circuit). See also Federal Circuit appeals.

