Ravi holds Patents for a specific design of tamper-proof locks sold under the trade mark "Tech-Lock". He sought an injunction against Sumit for infringement of his patented invention and restrain claiming a patent of add

A patent of addition application cannot be rejected on the grounds that the disclosure in the primary application or patent lacked innovative step. However, the disclosure in the main application or patent may be used as evidence of innovation against the patent addition application. In the matter of Ravi Kamal Bali v/s Kala Tech and others the Bombay High Court on 12th February, 2008 dismissed the defendant's arguments that Patent of addition can only be granted if it has an inventive step over the main application.