Question

Which of the following is a ground for revocation of patent?

• A. That the patent was obtained wrongfully in contravention of rights of petitioner
• B. That the invention, so far as claimed in any claim of the complete specification, was claimed in a valid claim of earlier priority date contained in the complete specification of another patent granted in India
• C. That the invention, so far as claimed in any claim of the complete specification, is not useful
• D. All of the above

Answer 1

The Correct Option is D

To revoke a patent, the following grounds are valid:
1. If the patent was obtained wrongfully, contravening the rights of a petitioner. 
2. If the invention claimed in the patent overlaps with a prior invention that was granted earlier in India. 
3. If the invention, as specified in the patent, does not have utility or is non-functional. 
Thus, the correct answer is d) All of the above.