Patent applications may be filed at one of the four patent offices in India, depending on territorial jurisdiction of the applicant (based on the address of the applicant). The patent office information including the regions covered by the respective offices is provided hereunder:

1. Chennai

Address: Intellectual Property Office, Intellectual Property Office Building, G.S.T. Road, Guindy, Chennai-600032,
Phone: 044-22502081-84
FAX: 044-22502066,
Email: chennai-patent@nic.in

Regions covered: The States of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu and the Union Territories of Pondicherry and Lakshadweep

2. Delhi

Address: Intellectual Property Office, Intellectual Property Office Building, Plot No. 32, Sector 14, Dwarka, New Delhi-110075,
Phone : 011-28034304, 28034305 28034306
FAX:011- 28034301,02
Email: delhi-patent@nic.in

Regions covered: The States of Haryana, Himachal Pradesh, Jammu and Kashmir, Punjab, Rajasthan, Uttar Pradesh, Uttaranchal, Delhi and the Union Territory of Chandigarh.

3. Mumbai

Address: Intellectual Property Office, Boudhik Sampada Bhawan, Near Antop Hill Post Office, S.M.Road,Antop Hill, MumbaiI – 400 037.
Phone : 24137701, 24141026, 24150381, 24148165, 24171457
FAX : 24130387
EMAIL: mumbai-patent@nic.in

Regions covered: The States of Maharashtra, Gujarat, Madhya Pradesh, Goa and Chhattisgarh; and the Union Territories of Daman and Diu, and Dadra and Nagar Haveli

4. Kolkata

Address: Intellectual Property Office, Intellectual Property Office Building, CP-2 Sector V, Salt Lake City, Kolkata-700091,
Phone : 23671945, 1946, 1987,
FAX-033-2367-1988,
Email:- kolkata-patent@nic.in
Regions covered: The rest of India