Patents Act, 1964


Proceedings for Infringement of Patents.

Restrictions on recovery of damages for infringement.

55.—(1) In proceedings for the infringement of a patent damages shall not be awarded against a defendant who proves that at the date of the infringement he was not aware, and had no reasonable ground for supposing, that the patent existed; and a person shall not be deemed to have been aware or to have had reasonable grounds for supposing as aforesaid by reason only of the application to an article of the word “patent”, “patented”, or any word or words expressing or implying that a patent has been obtained in the State for the article, unless the number of the patent accompanied the word or words in question.

(2) In any proceeding for infringement of a patent the Court may, if it thinks fit, refuse to award any damages in respect of any infringement committed after a failure to pay any renewal fee within the prescribed period and before any extension of that period.

(3) Where an amendment of a specification by way of disclaimer, correction or explanation has been allowed under this Act after the publication of the specification, no damages shall be awarded in any proceedings in respect of the use of the invention before the date of the decision allowing the amendment, unless the Court is satisfied that the specification as originally published was framed in good faith and with reasonable skill and knowledge.

(4) Nothing in this section shall affect the power of the Court to grant an injunction in any proceedings for infringement of a patent.