The daily union. [volume] (Washington [D.C.]) 1845-1857, 1845-08-22
EXTENSION OF PATENTS.
[cIRcuLAR.l
PArrsr orrleE. June 81, 1916.

PATENT 0FFIcE, June 81, I645.
TINE undersigned, constituted by law 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 may
hereafter apply for extensions.
The questions which arise on each application for
an extension are
l. Is the invention novel;
2. Is it usetiiR
3. Is il paiuabie and important to the public?
4. Has the inventor been adequately remunerated
for his time and expense in originating and perfect
ing it,
Has he used due diligence in introducing his
invention into general use'
The two first questions will 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 correct conclu-
sion in regard to the third point of inquiry, the APP
plcan should if possible procure the testimony Of
persons disinterested in the invention, which test-
mony should be taken under oath.
In regard TO the fourth and fifth points ofinquiry,
IN addition to his own oath showing his receipts and
expenditures on account of the invention by which
its value is to be ascertaned, the applicant should
show, by the testimony Of dsinterested witnesses
on oath, that he has taken all reasonable
to introduce his invention into general use, and that,
without default or neglect his part he has failed
to obtain from the and sale of the invention a
reasonable remuneration for the time, ingenuity,
and expense bestowed on the same, and the intro
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 ofopposltion 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 Of taking 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.
( 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 asainst his applications and if he cannot
show tina: his invention is novel, useful, valuable
and important to the public, and that, having made
all reasonable effort TO introduce it into general use
he has not been adequately remunerated for his
time and expenses in discovering and perfecting it,
the board cannot grant an extension.
JAMES BUCHANAN,
EDMUND BURKE,
Commissioner of Patents.
S. BARTON,
Solicitor of the Treasury.
The publishers 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 Jeifersonian, New York;
Herald and Gazette, Providence; Post, Boston; Adj
vertser, Lowell; N. III, Patriot, Concord, States.
man, Columbus, Ohio; Kentucky Democrat, Louis
vile; Courier, New Orleans.
June 23-9aw2m