Every patent granted in India passes through the hands of one pivotal authority – the Controller General of Patents, Designs and Trade Marks (CGPDTM). Whether an inventor is filing a new application, responding to an objection, or seeking a correction in their specification, the Controller is the officer they must engage with. But the Controller’s role is far more than a rubber stamp. Under the Patents Act, 1970, this officer carries sweeping powers – administrative, quasi-judicial, and procedural – that collectively make the patent system work. Understanding these powers is essential for anyone navigating India’s intellectual property landscape.

Table of Contents

Who is the Controller General?

Under Section 73 of the Patents Act, 1970, the term “Controller” refers to the Controller General of Patents, Designs and Trade Marks. This official is appointed under the Trade Marks Act, 1999 and, by operation of the Patents Act, also functions as the Controller of Patents. The Controller is the principal officer responsible for administering India’s patent system, overseeing everything from the examination of patent applications to the resolution of disputes. Officers appointed by the Central Government under Section 73(3) discharge their functions under the superintendence and directions of the Controller General, who may delegate authority through general or special written orders.

The Controller’s powers are spread across several chapters of the Patents Act but are consolidated most prominently in Chapter XV (Sections 77 to 81), which specifically deals with the “Powers of Controller Generally.” These provisions, read together with the Patents Rules, 2003, form the backbone of the Controller’s authority.

Civil court powers: the heart of the Controller’s authority

The most significant provision in Chapter XV is Section 77, which grants the Controller the powers of a civil court. This is not a vague administrative grant – it is a specific, statutory conferral of judicial-style authority for the purpose of conducting proceedings under the Act.

Summoning and enforcing attendance of witnesses

Under Section 77(1)(a), the Controller can summon and enforce the attendance of any person and examine them on oath. This power mirrors what a civil court does when it orders a witness to appear. In practice, the Controller may require the presence of patent applicants to clarify aspects of their application, opponents in opposition proceedings to present their case, or technical experts to provide specialized knowledge on complex inventions. This power ensures that proceedings before the Controller are not merely paper exercises but can involve real oral evidence when necessary.

Discovery, inspection, and production of documents

Section 77(1)(b) empowers the Controller to require the discovery and production of documents. This is directly drawn from the powers available to a civil court under the Code of Civil Procedure, 1908 (CPC). When facts are disputed – for example, whether an invention was truly novel or whether a specification adequately discloses the invention – the Controller can compel the production of documents that may resolve the question.

Receiving evidence on affidavit

Section 77(1)(c) allows the Controller to receive evidence on affidavit. This complements Section 79, which deals specifically with how evidence is given before the Controller. Under Section 79, the Controller may take oral evidence in addition to, or in lieu of, affidavit evidence, and may allow any party to be cross-examined on the contents of their affidavit. The importance of cross-examination as a safeguard of natural justice in patent proceedings was underscored in the case of Onyx Therapeutics, Inc. v. Union of India & Ors., where courts recognized it as an integral procedural right.

Issuing commissions for examination of witnesses

Section 77(1)(d) empowers the Controller to issue commissions for the examination of witnesses or documents. A commission is typically issued when a witness is located outside the jurisdiction of the Patent Office or is otherwise unable to appear in person. This power allows proceedings to continue without being stalled by geographical constraints – a practically important provision for patent matters that often involve inventors, assignees, or experts located across the country or even abroad.

Awarding costs

Under Section 77(1)(f), the Controller has the authority to award costs. This is significant because it introduces accountability into patent proceedings. A party that files a frivolous opposition, for instance, may be directed to pay the costs of the other party. Section 77(2) further provides that any order for costs made by the Controller is executable as a decree of a civil court – meaning it carries the same enforcement weight as a court judgment. This enforcement mechanism was noted in the Calcutta High Court’s decision in Natco Pharma Ltd. v. Union of India & Ors.

Setting aside ex parte orders

Section 77(1)(g) provides the Controller with the power to pass orders ex parte – that is, in the absence of one party – when that party has failed to appear despite notice. Importantly, the Act also provides a remedy: an application to set aside such an ex parte order must be made within one month from the date of communication of the order, extendable by one further month, accompanied by a statement of reasonable grounds. Where the ex parte order also affects another party, the Controller must transmit copies of the application and statement to that other party as well.

Power to correct clerical errors under section 78

Mistakes happen – a wrong date, a misspelled name, or a transcription error in a specification. Section 78 of the Patents Act gives the Controller the authority to correct clerical errors in any patent, specification, or other document filed in connection with a patent application, as well as clerical errors in anything entered in the Register of Patents. This power covers errors in the patent itself, in specifications, in other documents filed in pursuance of a patent application, and in any matter entered in the register.

This might seem like a minor administrative function, but its significance is considerable. An uncorrected clerical error in a patent specification could create ambiguity about the scope of the patent, potentially affecting an inventor’s rights or misleading third parties. The power under Section 78 ensures that administrative mistakes do not permanently cloud the legal validity or clarity of a patent. The correction is made on an application by the interested party, and the Controller has the discretion to allow or refuse it based on whether the error is genuinely clerical in nature rather than substantive.

Power to amend patent applications and specifications

Beyond correcting clerical errors, the Controller also holds broader powers related to the amendment of patent applications and specifications. Under Chapter X of the Patents Act (Sections 57 to 59), amendments may be made to a patent application or its complete specification before the Controller at any time before the grant of the patent.

Amendments before the Controller: section 57

Section 57 allows an applicant (or after grant, a patent holder) to apply to the Controller for permission to amend the application or specification. The Controller examines the proposed amendment to determine whether it introduces new matter or broadens the scope of the claims – both of which are generally not permitted. The Patents Act, 1970 mandates under Section 59 that no amendment shall be allowed that would result in the specification disclosing additional matter or that the claims, as amended, would not fall within the scope of the claims of the original specification.

Supplementary provisions: section 59

Section 59 lays down the limits within which amendments are permissible. It acts as a check on the applicant’s ability to use the amendment process to expand their patent claims after seeing what competitors are doing. The Controller’s role here is to act as a gatekeeper – permitting amendments that clarify or narrow the invention without allowing the patent to morph into something beyond what was originally disclosed.

This power is particularly important in the Indian context, where the Patent Office receives applications from both domestic inventors and multinational corporations. The ability to amend specifications helps applicants respond to examination reports and overcome objections, while the Controller’s oversight ensures that these amendments serve legitimate purposes.

Discretionary powers and the right to be heard: section 80

Section 80 deals with the exercise of the Controller’s discretionary powers – a nuanced but critically important provision. It states that before the Controller exercises any discretion adversely against any applicant or other party, that party must be given an opportunity to be heard, provided the party has requested a hearing at least ten days before the expiry of the relevant period.

This provision embeds the principles of natural justice – specifically the rule of audi alteram partem (hear the other side) – directly into the patent process. The Controller is not an absolute authority; any adverse exercise of discretion must be preceded by an opportunity for the affected party to make their case. This safeguard is essential for a quasi-judicial body making decisions that can have significant commercial and legal consequences for inventors and businesses.

Power over time extensions: section 81

Section 81 grants the Controller a practical administrative power – the ability to extend the time limit for doing any act under the Act. Notably, when granting such an extension, the Controller is not required to give notice to or hear any party that might be interested in opposing the extension, and no appeal lies against an order granting an extension. This reflects a pragmatic legislative choice: time extensions are routine administrative matters, and requiring full adversarial hearings for every extension would slow down the patent process considerably.

Additional procedural powers across the Act

Beyond Chapter XV, the Controller exercises a range of specific powers across the Patents Act. These include the power to refuse applications or require amendments under Section 15, to order the division of a patent application under Section 16, to post-date an application under Section 17, to handle cases of anticipation under Section 18, and to substitute applicants under Section 20. In opposition proceedings under Section 25, the Controller adjudicates both pre-grant and post-grant challenges, functioning essentially as a first-instance tribunal for patent disputes. The Controller also manages the Register of Patents under Chapter XIII, recording grants, assignments, licences, and corrections.

For matters involving national security, the Controller has further powers under Sections 35 to 41 to issue secrecy directions and restrict the foreign filing of patent applications – powers exercised in coordination with the Central Government and defence authorities.

Why these powers matter for inventors and practitioners

The breadth of the Controller’s powers reflects a deliberate legislative design. India’s patent system is designed to be accessible and administratively self-contained for the most common patent matters, without requiring parties to rush to courts at every turn. The Controller functions as a quasi-judicial authority capable of conducting proceedings with civil court-like rigour – summoning witnesses, receiving evidence, issuing commissions, awarding costs – while also performing routine administrative functions like correcting errors and granting time extensions.

For law students and patent practitioners, understanding these powers means understanding that proceedings before the Controller are not informal administrative meetings. They carry legal weight: orders can be executed as court decrees, adverse decisions can be challenged in the High Court, and procedural safeguards like the right to be heard are constitutionally grounded. The Controller General acts as the Controller of Patents for all purposes under the Act, making this office the single most important administrative and quasi-judicial institution in India’s patent ecosystem.

What do you think? Given that the Controller exercises powers equivalent to a civil court, should there be a dedicated patent tribunal at the first instance instead of combining administrative and quasi-judicial functions in a single office? And do the time-extension provisions under Section 81 – which allow no appeal and require no hearing – strike the right balance between efficiency and fairness?

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References
  1. https://www.indiacode.nic.in/handle/123456789/1392?locale=en
  2. https://corpbiz.io/learning/general-powers-of-controller-of-patent-in-india/
  3. https://iprstudio.com/powers-of-the-controller-under-the-indian-patent-regime/
  4. https://ipindia.gov.in/writereaddata/Portal/IPOAct/1_113_1_The_Patents_Act__1970___incorporating_all_amendments_till_1-08-2024.pdf
  5. https://ipo.org/wp-content/uploads/2013/03/Whitepaper-PatentprocurementinIndia.pdf

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Patents

1 Fundamentals of Patenting

  1. Historical Background of Patents
  2. Types of Patents
  3. World Patent
  4. Procedure for Filing a Patent in India
  5. Filing Patent Application in Other Countries

2 Terms and Definitions

  1. Inventions
  2. Inventive Steps
  3. Capable of Industrial Application
  4. New Invention
  5. Pharmaceutical Substance

3 Rights in Patents

  1. Scope of Patent Protection
  2. Limitation on Patent Rights
  3. Acts Not Considered as Infringement
  4. Compulsory License
  5. Revocation of Patent

4 Administration of Patents

  1. Patent Office
  2. Powers of the Controller General
  3. Register of Patent
  4. Patent Agents
  5. Training of Patent Agents and Examiners
  6. Modernization of Patent Offices
  7. Introducing Patent Education in Science Colleges

5 Procedure for Obtaining A Patent in India

  1. Stages Involved in Grant of a Patent
  2. Type of Patent Applications
  3. Format for Making Application
  4. Appropriate Office
  5. Prescribed Fee
  6. Person Entitled to File
  7. Procedure of Filing Application
  8. Patent of Addition

6 International Patent Search, Documentation and Analytics

  1. Structure of Patent Document
  2. Bibliographic Information Contained in Patent Documents INID Codes
  3. Kind Codes for Patent Documents
  4. International Patent Classification
  5. Types of Searches
  6. Sources of Patent Information
  7. How to Conduct Patent Search
  8. Understanding an International Search Report

7 Patent Specification and Claims

  1. Provisional and Complete Specification
  2. Categories of Invention
  3. Process of Drafting a Patent Specification
  4. Description Requirements of a Patent Specification in Different Jurisdictions
  5. Examples illustrating Various Components of a Patent Specification
  6. Essential Features of Description of an Invention
  7. Filing of a Patent Application at Patent Office

8 Commercialisation of Patents

  1. Objectives of Commercialisation of Patents Organisations
  2. Patent Commercialisation vs Product Marketing
  3. PatentlTechnology Valuations and Pricing
  4. Identifying Potential Licensees
  5. Formulating a Patent Licensing Strategy
  6. Licensing of Patented Know How to Clients in Developed Countries

9 Infringement of Patent

  1. Infringement: Its Meaning
  2. Exceptions to Infringement
  3. Types of Infringement
  4. Determination of Infringement
  5. Jurisdiction of Suit for Infringement
  6. Time for Filing the Suit

10 Filing Opposition- Pre/Post Grant Issues

  1. Pre-Grant Opposition
  2. Post-Grant Opposition
  3. Grounds of Opposition
  4. Procedure for Pre-Grant Opposition
  5. Procedure for Post-Grant Opposition

11 Grounds of Defence

  1. Defences
  2. Revocation Grounds
  3. Gillette Defence
  4. Relief or Remedy
  5. Declaration as to Non-Infringement

12 Intellectual Property Appellate Board (IPAB)

  1. Introduction
  2. Amendments in the Patents Act
  3. Objective of IPAB
  4. Location of IPAB and its Benches
  5. Salient features of the IPAB
  6. Qualifications of the Chairman and Vice-Chairman
  7. Qualifications of the Technical Member Patents
  8. Transfer of Cases
  9. Operationalisation of IPAB for Patents

13 Patent Co-operation Treaty and International Patent Filing Strategies

  1. Introduction
  2. Need for Protecting Inventions Abroad
  3. Using PCT Route for Filing Patent Applications
  4. General Procedure of PCT Filing
  5. Strategies followed by Applicants for PCT Filings
  6. Benefits of Using PCT System

14 Technology Transfer

  1. Introduction
  2. Technology Transfer Activities
  3. Dynamic Relationship between IPR Activity, Technology Transfer, and Commercialisation
  4. Partnerships in Technology Transfer and Development
  5. Methods of Technology Transfer
  6. Major Technology Transfer Organisations in India and Abroad
  7. Government Control on Technology Transfer
  8. Reasons for Failure of a Technology
  9. Future Scenario of Technology Transfer
  10. Practical Examples of Technology Transfer

15 Patents and Indian Biodiversity Act

  1. Convention on Biological Diversity 1992 (CBD)
  2. CBD and Biodiversity Act of India 2002
  3. Provisions in BDA
  4. Sourcing Biological Material and Associated Knowledge from India
  5. Patents Act and Protection of Bio-Resources
  6. Application Format for Access to Biological Resources and Associated Traditional Knowledge
  7. Benefit Sharing and Other Provisions