Which of the following statutes define ‘person interested’?

Correct option is A

According to Section 2(1)(t) of the Patents Act, 1970, the term “person interested” includes a person engaged in, or in promoting, research in the same field as that to which the invention relates, or a person who has a direct interest in the manufacture or use of the patented invention, or one who may be affected by the patent's existence. It also includes those who may file for revocation of the patent or oppose its grant or maintenance.

This definition ensures that third parties who could be commercially or academically affected by a patent can participate in relevant legal processes such as opposition proceedings, revocation applications, or compulsory licensing requests.

Information Booster:

This inclusive definition provides standing to entities beyond the applicant or patentee, making the patent system more transparent and accountable.
Common examples of "persons interested" include competitors, industry bodies, academic researchers, or consumer interest groups.