Emergency Legal Support: +91 90070 00603 | Chamber: 14 Hare Street, Kolkata
PANCHANAND SHAW Advocate • Calcutta High Court
Call Now
Power of Attorney July 13, 2026 7 min read

Patent Registration Lawyer Kolkata | Patent Filing Expert | Panchanand

PS

Advocate Panchanand Shaw

Practicing Advocate, Calcutta High Court | 15+ years | 14 Hare Street, Kolkata

Table of Contents

Expert Patent Registration Lawyer Kolkata in Kolkata

Need Legal Help? Talk to Advocate Panchanand Shaw

Advocate Panchanand Shaw provides expert legal representation for clients in Kolkata. With extensive experience at the Calcutta High Court and district courts across West Bengal, he delivers decisive legal solutions tailored to your needs.

Call +91 90070 00603 WhatsApp Now Book Appointment

Need Legal Help? Talk to Advocate Panchanand Shaw

Expert Patent Registration Lawyer in Kolkata — Patent Filing & Prosecution

Call +91 90070 00603 WhatsApp Now Book Appointment

Patent law in India, governed by the Patents Act, 1970, protects inventions by granting exclusive rights to inventors for a limited period. Patents are crucial for protecting technological innovations, encouraging research and development, and providing a competitive advantage in the marketplace. At Panchanand, our patent registration lawyers in Kolkata provide comprehensive services for patent filing, prosecution, enforcement, and portfolio management.

Whether you are an individual inventor, startup, research institution, or multinational corporation, securing patent protection for your inventions is essential for commercial success and innovation-driven growth.

Need a Patent Registration Lawyer in Kolkata?

Speak with an expert lawyer today. Get a free case evaluation.

Need urgent legal advice? Chat with us!

Frequently Asked Questions

What is a patent and what does it protect?

A patent is an exclusive right granted for an invention — a product or process that provides a new way of doing something or offers a new technical solution to a problem. It protects the technical or functional aspects of an invention, not just its appearance.

What are the requirements for patentability?

For an invention to be patentable, it must satisfy three criteria: novelty (new and not anticipated by prior art), inventive step (non-obvious to a person skilled in the art), and industrial applicability (capable of being made or used in industry).

What cannot be patented in India?

Section 3 of the Patents Act excludes: frivolous inventions, inventions contrary to law or morality, mere discovery of a scientific principle, mere new form of a known substance, mere admixture resulting in aggregation of properties, mere arrangement or re-arrangement of known devices, medical treatment methods, plants and animals, mathematical methods, business methods, computer programmes per se, and traditional knowledge.

How long does patent registration take?

A patent application typically takes 2-5 years for grant in India, depending on the field of invention, examination workload, and office actions. Expedited examination is available for certain categories including startups, small entities, and female inventors.

How long does patent protection last?

Patent protection lasts for 20 years from the date of filing (or priority date) of the patent application. After the term expires, the invention enters the public domain and can be freely used by anyone. Annual renewal fees must be paid to maintain the patent.

Can a granted patent be challenged?

Yes. A granted patent can be challenged through: pre-grant opposition (before grant), post-grant opposition (within 12 months of grant), revocation petition before the Intellectual Property Appellate Board (now High Court), and counterclaim in infringement proceedings.

Share this article:

Need Legal Assistance in Kolkata?

Advocate Panchanand Shaw specializes in Power of Attorney matters at the Calcutta High Court and all Kolkata courts. Get professional legal counsel tailored to your case.

Call +91 90070 00603 Free Consultation