be added, to be called Section 15.

"SECTION 15. Whenever any patent is inoperative or invalid, by reason
of a defective or insufficient specification, or by reason of the
patentee claiming as his own invention or discovery more than he had a
right to claim as new, if the error has arisen by inadvertance, accident
or mistake, and without any fraudulent or deceptive intention, the
Minister of the Interior shall, on the surrender of such patent and the
payment of the same fees required by law upon the issue of an original
or first patent, cause a new patent for the same invention, and in
accordance with the corrected specification, to be issued to the
patentee, or, in the case of his death, or of an assignment of the whole
or any undivided part of the original patent, then to his executors,
administrators, or assigns, for the unexpired part of the term of the
original patent. Such surrender shall take effect upon the issue of the
amended patent. The Minister of the Interior may, in his discretion,
upon demand of the applicant, and upon payment of the same or first fee
required to be paid on the issuing of a patent, cause several patents to
be issued for distinct and separate parts of the thing patented. The
specifications and claim in every such case shall be subject to revision
and restriction in the same manner as original applications are. Every
patent so re-issued, together with the corrected specification, shall
have the same effect and operation in law, on the trial of all actions
for causes thereafter arising, as if the same had been originally filed
in such corrected form; but no new matter shall be introduced into the
specification, nor in case of a machine patent shall the model or
drawings be amended, except each by the other, but when there is neither
model nor drawing, amendments may be made upon proof satisfactory to the
Minister of the Interior, that such new matter or amendment was a part
of the original invention, and was omitted from the specification by
inadvertance, accident, or mistake, as aforesaid. Upon the filing of
any such application for a re-issue with the Minister of the Interior,
the same examination shall be had as is provided by Section 6 of the
"Act to Regulate the issuing of Patents," approved August 29th, 1884."

SECTION 4. That a new Section to said Act, as amended by the Act
entitled "An Act to amend an Act to regulate the issuing of Patents,"
approved June 23rd, 1888, be added, to be