<h1>Understanding India's Patent Process: Filing Steps, Patentability Criteria, and Roles of Patent Office and Agents.</h1> The text provides a detailed overview of the patent process in India, including the definition of a patent, territorial limitations, and the procedure for filing both national and international applications. It explains the criteria for patentability, the importance of filing before publication, and the stages involved in the grant of a patent. The roles of the Indian Patent Office, the process for examination and opposition, and the obligations of patentees. It also addresses the role and selection of patent agents, fees, and the necessity of prior permission for filing patents abroad. Additionally, it highlights the requirement for depositing biological materials and the existence of an International Depository Authority in India.