the United States Government, United States Code — Title 35, Chapter 37…
“ The amounts of fees specified in subsection (a) of this section, except the international fee and the handling fee, shall be prescribed by the Director. He may refund any sum paid by mistake or in excess of the fees so specified, or if required under the treaty and the Regulations. The Director may also refund any part of the search fee, the national fee, the preliminary examination fee, and any additional fees, where he determines such refund to be warranted. ”
