Patents Act, 1970
147. Evidence of entries, documents, etc.
(1) A certificate purporting to be signed by the Controller as
to any entry, matter or thing which he is authorized by this Act or any rules
made thereunder to make or do, shall be prima facie evidence of the entry
having been made and of the contents thereof and of the matter or thing having
been done or omitted to be done.
(2) A copy of any entry in any register or of any document kept
in the patent office or of any patent, or an extract from any such register or
document, purporting to be certified by the Controller and sealed with the seal
of the patent office shall be admitted in evidence in all courts, and in all
proceedings, without further proof or production of the original.
(3) The Controller or any other officer of the patent office
shall not, in any legal proceedings to which he is not a party, be compellable
to produce the register or any other document in his custody, the contents of
which can be proved by the production of a certified copy issued under this Act
or to appear as a witness to prove the matters therein recorded unless by order
of the court made for special causes.