28 U.S.C. § 1744 : US Code - Section 1744: Copies of United States Patent and Trademark Office documents, generally

Search 28 U.S.C. § 1744 : US Code - Section 1744: Copies of United States Patent and Trademark Office documents, generally

Copies of letters patent or of any records, books, papers, or
drawings belonging to the United States Patent and Trademark Office
and relating to patents, authenticated under the seal of the United
States Patent and Trademark Office and certified by the Under
Secretary of Commerce for Intellectual Property and Director of the
United States Patent and Trademark Office, or by another officer of
the United States Patent and Trademark Office authorized to do so
by the Director, shall be admissible in evidence with the same
effect as the originals.
Any person making application and paying the required fee may
obtain such certified copies.