Patents Act, 1970
86. Endorsement of patent with the words "licenses of
right"
(1) At any time after the expiration of three years from the
date of the sealing of a patent, the Central Government may make an application
to the Controller for an order that the patent may be endorsed with the words
"licenses of right" on the ground that the reasonable requirements of
the public with respect to the patented invention have not been satisfied or
that the patented invention is not available to the public at a reasonable
price.
(2) The Controller, if satisfied that the reasonable requirements
of the public with respect to the patented invention have not been satisfied or
that the patented invention is not available to the public at a reasonable
price, may make an order that the patent be endorsed with the words
"licenses of right".
(3) Where a patent of addition is in force, any application made
under this section for an endorsement either of the original patent or of the
patent of addition shall be treated as an application for the endorsement of
both patents, and where a patent of addition is granted in respect of a patent
which is already endorsed under this section, the patent of addition shall also
be so endorsed.
(4) All endorsements of patents made under this section shall be
entered in the register and published in the Official Gazette and in such other
manner as the Controller thinks desirable for bringing the endorsement to the
notice of manufacturers.