Types of Patent Applications in India

Patents are one of the most important forms of intellectual property rights. A patent is an exclusive legal right granted to an inventor over an invention, which prevents others from making, using, selling, or distributing the invention without the inventor’s permission. In India, patents are governed by the Patents Act, 1970 and the Patents Rules, 2003.

The purpose of granting patents is twofold. First, it provides recognition and economic benefit to the inventor by giving exclusive rights for a limited time. Second, by publishing the contents of the invention, it ensures that others cannot claim similar rights over the same subject matter, thereby promoting further innovation.

For a patent to be granted in India, three essential conditions must be met:

• Novelty – The invention must be new and not published anywhere before the filing date.
• Non-obviousness – The invention must not be obvious to a person skilled in that particular field.
• Utility – The invention must have industrial application and serve a practical purpose.

Once these conditions are satisfied, the applicant may proceed to file a patent application. There are different types of patent applications available, depending on the stage of the invention, geographical scope, and purpose of protection.

What is a Patent Application?

A patent application is a formal request made to the Patent Office for the grant of a patent. It contains:

• A description of the invention,
• Claims defining the scope of legal protection,
• Drawings (if any), and
• Prescribed official forms and fees.

Filing a patent application is the first step towards securing exclusive rights over an invention. The Indian Patent Office follows a first-to-file system, meaning the person who files the application first gets the right, even if someone else invented it earlier. Hence, early filing is crucial.

Types of Patent Applications in India

The Patents Act, 1970 provides for various kinds of applications depending on the circumstances of the inventor. The main types are:

1. Provisional Application
2. Ordinary or Non-Provisional Application
3. Convention Application
4. PCT International Application
5. PCT National Phase Applicaton
6. Patent of Addition
7. Divisional Application

Let us understand each of them in detail.

Provisional Application

A provisional application is a temporary application filed when the invention is not fully developed or is still under experimentation. It is useful for inventors who need more time to finalise their invention but want to secure an early filing date.

Key Features:

• Establishes a priority date for the invention.
• Gives the applicant 12 months to file a complete specification.
• Allows the use of the term “Patent Pending” on the invention.
• Cheaper and simpler than a complete specification.
• Provides time to test market potential before investing in a full patent.

If a complete specification is not filed within 12 months, the provisional application becomes void. Therefore, while provisional applications are helpful, they must be drafted carefully to ensure that the invention’s novelty is adequately protected.

Ordinary or Non-Provisional Application

An ordinary application (also known as a non-provisional application) is filed when the invention is fully developed. Unlike a provisional application, it must be accompanied by a complete specification at the time of filing.

Complete Specification Includes:

• Title of the invention
• Technical field
• Background of the invention
• Objects of the invention
• Detailed description
• Claims defining scope of protection
• Abstract
• Drawings, if any

Modes of Filing:

• Direct Filing – filing a complete specification directly with the Indian Patent Office.
• Subsequent Filing – filing a complete specification after a provisional application, claiming priority from it.

Ordinary applications are examined in detail by the Patent Office, and if the invention meets the criteria of novelty, inventive step, and utility, a patent is granted.

Convention Application

A convention application is filed in India if the applicant has already filed a similar application in a convention country (a country that is a member of the Paris Convention). It allows the applicant to claim the priority date of the first application filed abroad.

Key Features:

• Must be filed in India within 12 months of the first filing in the convention country.
• Helps secure the same priority date in India.
• Protects the invention across multiple jurisdictions.

Documents Required:

• Name, address, and nationality of applicants and inventors.
• Priority application details (number, date, country).
• Specification, claims, and drawings (in English).
• Certified copy of priority documents within 6 months.
• Proof of right to file the patent (assignment deed or employment contract).

PCT International Application

The Patent Cooperation Treaty (PCT) allows inventors to file a single international application to seek protection in more than 150 member countries. Although the PCT itself does not grant an “international patent,” it simplifies the process of filing in multiple countries.

Advantages:

• A single application covers multiple jurisdictions.
• Internationally recognised priority date.
• Provides 30–31 months before entering national phases, giving more time to decide in which countries to seek protection.
• Provides an International Search Report (ISR) to assess novelty and prior art.
• Option to obtain an International Preliminary Examination Report (IPER), which gives an opinion on patentability.
• Helps reduce costs by delaying national filings until the invention’s market potential is evaluated.

Filing Options for Indian Applicants:

• Through the Indian Patent Office (IPO) as the receiving office.
• Directly with the International Bureau of WIPO, after obtaining permission from IPO.

PCT National Phase Application

After filing a PCT application, the applicant must enter the national phase in each country where protection is sought.

In India:

• Must be filed within 31 months from the priority date or international filing date.
• Application can be filed in English or Hindi.
• Examination is carried out only after a request for examination is filed (within 48 months).
• The Patent Office issues a First Examination Report (FER), and the applicant must comply with objections within 6 months (extendable by 3 months).

This process ensures that protection is granted only in those countries where the applicant chooses to pursue patent rights.

Patent of Addition

A patent of addition is filed for an improvement or modification of an invention for which a patent has already been filed or granted. It is useful when the change is minor and does not involve a substantial inventive step.

Key Features:

• No separate renewal fee required.
• It expires with the main patent.
• Governed by Sections 54–56 of the Patents Act, 1970.
• Must contain a reference to the main patent.
• Granted only if the main patent is valid and in force.

This provision allows inventors to refine their inventions and secure protection for improvements without filing a completely new patent.

Divisional Application

When a single patent application contains more than one invention, the applicant may divide it into separate applications. These are called divisional applications.

Key Features:

• Filed either voluntarily or to meet objections raised by the Patent Office.
• Each divisional application is treated separately but retains the same priority date as the parent application.
• Helps secure individual protection for multiple inventions disclosed in the original filing.

This ensures that applicants do not lose rights over different aspects of their invention.

How to Choose the Right Patent Application?

Selecting the right type of application is crucial. Factors to consider include:

1. Status of the Invention
   • Still in development → file a provisional application.
   • Fully developed → file a non-provisional application.
2. Geographical Scope
   • Only in India → ordinary or provisional application.
   • In convention countries → convention application.
   • In multiple countries → PCT international and national phase applications.
3. Nature of Protection Required
   • Minor modifications → patent of addition.
   • Multiple inventions in one filing → divisional application.
4. Novelty and Prior Art: Conduct searches in databases like Google Patents or Espacenet.
5. Cost and Time: Consider filing and prosecution fees in different jurisdictions.
6. Professional Guidance: Drafting patent claims requires expertise. Consultation with a registered patent agent or attorney ensures stronger protection.

Conclusion

Patents encourage innovation by rewarding inventors with exclusive rights. In India, several types of patent applications exist to suit different circumstances—whether the invention is under development, already filed abroad, intended for international protection, or involves improvements.

Understanding the types of patent applications—provisional, ordinary, convention, PCT international, PCT national phase, patent of addition, and divisional—is essential for effectively safeguarding intellectual property. Choosing the right application type, preparing accurate documentation, and filing within deadlines ensures that inventions receive maximum legal protection and commercial value.