A patent application can be filed either by the true and first inventor or his assignee, either alone or jointly with any other person. However, the legal representative of any deceased person can also make an application for a patent.

Yes, India has four patent offices located at Kolkata, New Delhi, Mumbai and Chennai. Each office has a separate territorial jurisdiction. The appropriate office for all proceedings including filing of the application depends normally where the applicant/first mentioned applicant resides/has domicile/has place of business/has origin of invention. In case of foreign applicants, it depends on the address for service in India given by such applicant.

A request for restoration of patent can be filed within 18 months from the date of cessation of patent along with the prescribed fee. After receipt of the request the matter is notified in the official journal for further processing of the request.