U.S. Patent Act
..Part I. Patent and Trademark Office
....Chapt. 4. Patent Fees
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(a) All fees for services performed by or materials furnished by the Patent and Trademark Office will be payable to the Commissioner.
(b) All fees paid to the Commissioner and all appropriations for defraying the costs of the activities of the Patent and Trademark Office will be credited to the Patent and Trademark Office Appropriation Account in the Treasury of the United States.
(c) Revenues from fees will be available to the Commissioner of Patents to carry out, to the extent provided for in appropriation Acts, the activities of the Patent and Trademark Office. Fees available to the Commissioner under section 31 of the Trademark Act of 1946, as amended (15 U.S.C. 1113) [15 USCS Sect. 113], shall be used exclusively for the processing of trademark registrations and for other services and materials related to trademarks.
(d) The Commissioner may refund any fee paid by mistake or any amount paid in excess of that required.
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