The daily union. [volume] (Washington [D.C.]) 1845-1857, 1845-06-24
EXTENSION OF PATENTS.
[cIRcuLAR.l


PATENT 0rFIcE, June 81, Ie45.
I'HE undersigned, constituted by law a board to
Il decide upon applications for the extension OF
patents, have adopted the following suggestions and
rules, for the benefit of those persons who NAV
hereafter apply for extensions.
The questions which arise on each application for
an extension are
l. Is the invention nopel?
2. Is it useful?
3. Is il paiuable and important to the publci
4. Has the inventor been adequately rsm,meraied
for his time and expense in originating and perfect
ing it,
S Has he used due diligence in introducing his
invention into general use'
The two first questions win be determined upon
the result Of an examination in the Patent Office;
as will also the third, to some extent.
To enable the board to come to a correct concur
sion in regard to the third point Of inquiry the APP
plcant should, if possible, procure the testimony OF
persons dsinterested in the invention, which test-
mony should be taken under oath.
In regard to the fourth and fifth points Enquiry,
in addition to his own oath showing his receipts and
expenditures on account of the invention, by which
its value is TO be ascertained, the applicant should
show, by the testimony of disinterested witnesses
on oath, that he has taken al reasonable measures
to introduce his invention into general USE and that
without default or neglect on his part he has failed
to obtain from the use and sale Of the invention a
reasonable remuneration for the time, ingenuity,
duction thereof into use.
The report Of the examiner upon the novelty and
utility of the invention, will be ready fifteen days
before the day appointed for the hearing, which will
be open for inspection at the Patent Office copies of
which will be furnished to all parties interested, If
desired, on payment Of the usual fees for copies.
In case Of opposition by any person to the extern
sion of patent, both parties may take testimony
each giving reasonable notice to the other of the
time and place oftaking said testimony, which shall
be taken according to the rules prescribed by the
Commissioner of Patents in cases of interference
All arguments Submitted to the board must be in
writing. tr
In conclusion, the undersigned would remark,
generally, that monopoly of his invention is Sc
cured by law to the inventor for the term of four
teen years This is done with view to compen-
safe him for his time and expense in originating and
perfecting it. At the end Of the time for which his
patent runs, his monopoly should cease, and the in
vention become public property, unless he can show
good reasons to the contrary. The presumption is
always against his application; and if he cannot
show that his invention is novel, useful, valuable
and important to the public, and that, having made
he has not been adequately remunerated for his
time and expenses in discovering and perfectng it,
the board cannot grant an extension.
JAMES BUCHANAN,
Secretary of State.
EDMUND BURKE,
Commissioner of Patents.
F. BARTON,
Solicitor of the Treasury.
Thepublishers of the following papers will please
insert the above notice twice each week for two
months, and send their bills to this office for pay
ment, viz: Union, Constitution, and United States
Journal, Washington; Republican and Argus, Bal
timore; Keystone, Philadelphia; Union, Harris
burg; Morning News and Jeffersonian, New. York;
Herald and Gazette, Providence; Post, Boston; Ad-
vertser, Lowell; N. H. Patriot, Concord; States
man, Columbus, Ohio; Kentucky Democrat, Louis
vile; Courier, New Orleans.
June 23--2aw2m 4.