INTRODUCTION
In India, the system of granting and protecting patent rights is governed by the Patents Act, 1970 ("Act") and the Patent Rules, 2003. One of the foundational pillars of this legal framework is the process of patent grant and the rights conferred upon patentees. Chapter VIII of the Act outlines key provisions related to the scope of patent rights, co-ownership, foreign use exemptions, and disputes over inventorship.
GRANT AND AMENDMENT OF PATENTS
Under Section 43, a patent is granted once the application is found to be in order, not refused by the Controller, and compliant with the Act. Upon grant, the patent is sealed by the Patent Office and its date is recorded in the Register of Patents, confirming its legal enforceability. As per Rule 74, the Controller must publish the grant, making the complete specification, provisional specification (if any), drawings, abstracts, and related documents available for public inspection.
Section 44 addresses cases where a patent is granted to a deceased individual or a defunct corporate entity. In such instances, the Controller may amend the patent by substituting the name of the rightful successor, ensuring the patent remains legally valid and is deemed to have always been in the successor's name. Applications for amendment must be supported by documentary evidence and submitted in Form 10, as outlined under Rule 75.
To keep a patent in force, annual renewal fees must be paid starting from the end of the second year after the patent date, as specified in the First Schedule. As per (Rule 80(1A)), the payment period may be extended by up to six months using Form 4, with the applicable fee. Renewal fees for multiple years may be paid in advance, and the Controller issues a certificate upon successful payment. If the renewal fee is not paid within the prescribed or extended period, the patent ceases to have effect, and its subject matter enters the public domain.
No protection is granted after expiry or lapse, and no infringement suit can be filed for acts committed before the actual grant date. However, restoration may be requested within 18 months from the date of lapse, subject to conditions under the Act.
FORM, EXTENT, AND EFFECT OF PATENT
Under Section 45, every patent is dated from the filing date, which determines its 20-year term and renewal schedule, and is recorded in the Register of Patents as per Section 67. For international applications filed under the Patent Cooperation Treaty (PCT) designating India, the term is calculated from the international filing date. Under Section 46, every patent must be issued in the prescribed format and shall have effect throughout India, ensuring uniform protection and enforceability across all jurisdictions. A patent is granted for one invention only, but no legal objection can be raised on the ground that it covers more than one invention.
Under Section 47, every patent is subject to conditions that allow limited use without infringement. The Government may use, import, or manufacture patented products or processes for its own use, and individuals may use them for research or education. For medicines or drugs, the Government can distribute them through public institutions and notify others via the Official Gazette. As per Rule 97, related documents are open for public inspection, ensuring transparency and balancing patent rights with public welfare.
Under Section 48, a patentee is granted exclusive rights to prevent others from using the invention without consent, subject to Section 47 and other provisions of the Act. These rights differ based on whether the patent covers a product or a process. For a product, the patentee can stop third parties from making, using, offering for sale, selling, or importing the product in India. For a process, the patentee can prevent unauthorized use of the process and restrict dealings in any product directly obtained from it.
As per Rule 74, no infringement proceedings can begin before the publication date of the patent application, although the Act does not define "infringement," any violation of these rights qualifies as such. As clarified by Rule 64, these are negative rights that allow the patentee to exclude others, not necessarily to use or commercialize the invention themselves. These rights may be limited by regulations, overlapping patents, or public interest provisions.
CO-OWNERS PROVISIONS
Under Section 50, co-owners hold equal undivided shares unless otherwise agreed. Each may independently use the patent under Section 48, but cannot assign or license their share without mutual consent. Sale by one co-owner grants full rights to the buyer. Patents are treated as movable property, and general laws of ownership apply.
Under Section 51 read with Rules (76-78), the Controller is empowered to issue directions to co-owners of a patent regarding its sale, lease, licensing, or exercise of rights under Section 50. Any co-owner may apply for such directions using Form 11, accompanied by a statement of facts. The Controller must send copies of the application to all other registered co-owners, Rule 76, or to the person in default, Rule 77, depending on the nature of the request.
If a co-owner fails to execute a required instrument or perform an action within 14 days of a written request, the Controller may authorize another person to act on their behalf. Before issuing any direction, the Controller must provide an opportunity to be heard to all affected parties. The hearing procedure follows Rule 78, which applies the opposition process outlined in (Rules 55A) and (57–63).
PROVISIONS FOR PATENT OBTAINED BY FRAUD
Under Section 52 read with Rule 79, the Controller may grant a patent to the true and first inventor if an existing patent is revoked under Section 64 for having been obtained fraudulently. If the court finds that the invention was wrongfully acquired, it may either revoke the patent or direct amendment of the specification to exclude the fraudulently obtained claims. In such cases, the court may permit the grant of the whole or part of the invention to the rightful inventor.
Upon such order, the petitioner must file a request in Form 12 within three months, along with a statement of facts and a certified copy of the court's order. If the entire patent is granted, it retains the same date and number as the revoked one. If only part is granted, the new patent bears the same date but is assigned a new number in the prescribed series. The Controller may require a fresh, complete specification for the granted portion. Importantly, no infringement suit can be filed for acts committed before the actual grant date of the new patent.
FOREIGN USE
Under Section 49, the use of a patented invention on foreign vessels, aircraft, or land vehicles entering India temporarily or accidentally does not constitute infringement, provided the invention is used solely for the actual needs of that craft. This exemption applies to components used in the body, machinery, tackle, apparatus, or accessories of such vehicles. However, the protection is reciprocal; it does not apply to vehicles from countries that do not offer similar exemptions to Indian patents when present in their jurisdiction.
CONCLUSION
The grant of patents under the Act plays a crucial role in securing exclusive rights for inventors, defining ownership rules. It also addresses joint ownership, fraudulent acquisition, and renewal procedures to ensure legal clarity and enforceability. Countries like the USA, UK, Japan, and Germany follow similar systems that grant time-bound rights while safeguarding public interest. These frameworks help verify legal entitlements, support commercialization, and reduce disputes.
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