Types of Patents in India

Innovation drives economic growth and societal progress. To protect innovations and encourage disclosure, the law provides patent rights. A patent in India is an exclusive right granted under the Patents Act, 1970 to the inventor or assignee for a limited period. The patentee gains the right to prevent others from making, using, selling, offering for sale, or importing the invention without permission.

In India, the term of a patent is 20 years from the filing date. While “types of patents” is a broad phrase, under Indian law patents are usually classified as product patents, process patents, and provisional vs complete specifications. Some categories such as design patents or plant patents, which are recognised in the United States, are not formally part of the Indian patent regime. Instead, India has parallel systems like the Designs Act, 2000 and the Protection of Plant Varieties and Farmers’ Rights Act, 2001.

This article explains the types of patents relevant to India, with comparisons to global practices where necessary.

What Is a Patent under Indian Law

According to Section 2(1)(m) of the Patents Act, 1970, a patent means a patent granted for any invention under the Act. The invention itself is defined under Section 2(1)(j) as a new product or process involving an inventive step and capable of industrial application.

To qualify as a patentable invention in India, the subject matter must be:

• Novel – not anticipated by prior art.
• Inventive – not obvious to a person skilled in the art.
• Industrially applicable – capable of being made or used in industry.

Certain exclusions are provided under Sections 3 and 4, such as mere discoveries, business methods, mathematical formulae, atomic energy-related inventions, and inventions contrary to public order or morality.

Types of Patents in India

Product Patents

A product patent protects the end product itself, irrespective of the method used to produce it. It grants the patentee the right to prevent third parties from making, using, offering for sale, selling, or importing that product without consent. This aligns with Section 48(a) of the Patents Act.

Examples

• A pharmaceutical drug molecule (for example, a new cancer drug).
• A novel agricultural machine with unique structural features.
• A chemical compound with specific composition and properties.

Process Patents

A process patent protects a method of manufacturing or a technical process rather than the final product. The patentee can prevent others from using the process and from dealing in products directly obtained from that process. This is covered by Section 48(b) of the Patents Act.

Examples

• A method for synthesising a pharmaceutical drug using a novel catalytic pathway.
• A process to manufacture industrial cement with improved strength.
• A method of producing biofuel using a specific sequence of steps.

Provisional and Complete Specifications

In India, the “type” of patent application is also important. The law provides two stages of filing:

Provisional application (Section 9(1))

• Filed when the invention is at a developing stage.
• Requires only a provisional specification without complete claims.
• Secures an early priority date, which is valuable in patent races.
• Valid for 12 months; within this period, the applicant must file a complete specification.

Complete specification

• Contains a full and detailed description of the invention with claims, drawings, and best method disclosure.
• Examination and grant are based on the complete specification.
• Provides enforceable rights once the patent is granted.

Design Protection (not patents, but often confused)

India does not recognise design patents like the US. Instead, the Designs Act, 2000 protects the aesthetic features of an article—shape, configuration, ornament, or composition of lines or colours applied by an industrial process.

• Term: 10 years, extendable by 5 years.
  Functionality is not protected; only appearance is covered.

Example: The unique external design of a mobile phone or a chair.

A patent protects technical function, whereas a registered design protects visual appearance.

Plant Varieties Protection (separate law in India)

India does not grant plant patents under the Patents Act. Plant varieties are protected under the Protection of Plant Varieties and Farmers’ Rights Act, 2001 (PPVFR Act).

• Criteria: Distinctness, Uniformity and Stability (DUS). 
• Balances breeders’ rights with farmers’ rights to save, use, and exchange seeds.

Example: A new variety of rice or wheat developed by agricultural research institutions.

Utility Models (not applicable in India)

Some countries (like China, Germany, and Japan) provide utility model protection for minor inventions with lower inventive thresholds. India currently has no utility model regime, though discussions have taken place in policy circles. For now, inventors must rely on regular patents or other IP forms.

Key Features of Indian Patent System

• Single unified patent: India does not categorise patents into “utility” or “design” patents as the US does. The Patents Act covers product and process patents only.
  
• Term: 20 years across all categories from the date of filing.
• Examination system: Applications are published after 18 months unless early publication is requested; examination is on request.
• Exclusions: Section 3 lists non-patentable subject matter (e.g., discoveries, methods of agriculture, business methods, algorithms).

Conclusion

In India, the types of patents essentially revolve around product patents, process patents, and provisional vs complete applications. While terms like “design patent” or “plant patent” appear in global discourse, they are not directly part of Indian patent law. Instead, India uses the Designs Act, 2000 for industrial designs and the PPVFR Act, 2001 for plant varieties.