Introduction to the Indian Patent System and Medical Devices
India’s patent regime is governed by the Patents Act, 1970, as amended in subsequent years, including alignments with the TRIPS Agreement in 2005. This framework aims to balance innovation incentives with public interest, particularly in healthcare. Medical devices and equipment form a critical sector, contributing significantly to India’s growing medtech industry, valued at around USD 11 billion in 2023 and projected to reach USD 50 billion by 2030. The sector encompasses a wide array of products, from simple bandages to advanced imaging systems, and is regulated by the Central Drugs Standard Control Organization (CDSCO) under the Medical Devices Rules, 2017.
Patent protection for medical devices in India is available, but it is not absolute. Unlike pharmaceuticals, where evergreening is restricted, medical devices can be patented if they demonstrate novelty, an inventive step, and industrial applicability. However, a patent drafting personnel must take utmost care while drafting the claims of a patent application on a medical device, as the subject matter goes through a minefield. This ensures that essential medical advancements remain accessible while rewarding genuine innovations. For instance, while a novel surgical tool can be patented, methods of performing surgery cannot. The Indian Patent Office (IPO) has seen a surge in filings for medical devices, with over 2,000 applications annually in recent years, driven by domestic startups and foreign multinationals.
The National Medical Devices Policy, 2023, classifies devices into broad categories: implants (e.g., pacemakers, stents), consumables and disposables (e.g., syringes, gloves), electronic equipment (e.g., MRI machines, ventilators), surgical equipment (e.g., scalpels, endoscopes), and in-vitro diagnostic reagents (e.g., test kits for blood glucose). These classifications help in understanding patentable scopes, as patents are granted for the device itself or its novel features, not for therapeutic methods. This policy underscores India’s push towards self-reliance in medtech, encouraging patent filings to foster R&D.
General Criteria for Patenting
For the sake of ease, the criteria of patenting may be segregated into Patenteligibility and Patentability. For the former, i.e., Patenteligibility, any invention, including medical devices, must satisfy three standard essential criteria under Section 2(1)(j) of the Patents Act, as also in other jurisdictions: novelty, inventive step, and industrial applicability.
Patenteligibility:
- Novelty: The device must be new, meaning it has not been disclosed in any form (published, used, or sold) anywhere in the world before the filing date. For medical equipment, this requires a thorough prior art search. For example, a modified catheter with a unique coating to prevent infections could qualify if no similar design exists globally.
- Inventive Step: The invention must involve a technical advance over existing knowledge and not be obvious to a person skilled in the art. Being a grey area, this is often the toughest hurdle, and often is subjected to discretion. A mere improvement, like enhancing the ergonomics of a known stethoscope without a significant functional upgrade, may not qualify. However, if the modification results in better accuracy or reduced patient risk, it could pass. The IPO evaluates this through examiner reports, often citing international standards from the European Patent Office or USPTO for comparison. Cost-effectiveness as well as environmental edge may also assign inventiveness to a hitherto obvious subject matter.
- Industrial Applicability: The device must be capable of being made or used in industry. Most medical equipment meets this easily, as it is designed for manufacturing and clinical use. For instance, a portable ECG machine that can be produced at scale qualifies.
Additionally, the invention must be sufficiently disclosed in the patent specification, including drawings and claims, to enable a skilled person to replicate it.
Patentability:
Almost every jurisdiction has certain exclusions of subject matters that are not considered patent-worthy, despite satisfying all the criteria of Patenteligibility. Regarding this, the USA, at least by its principle, sticks to “anything under the Sun, made by Man, is patentable”, although this stand has been dwindled post the widely discussed BRCA decision. Most of the jurisdiction keeps a safeguard by rendering “anything against public order and morality” non-patentable, whereas some jurisdictions, such as Europe and India, don’t consider “method of treatment/ diagnosis” as patentable subject matter. India, particularly, maintains a very stringent standard regarding judging the “method of treatment/ diagnosis”.
For medical devices, this often includes details on materials, mechanisms, and safety features. Software-integrated devices, like AI-driven diagnostic tools, can be patented if they produce a technical effect beyond mere computation, avoiding exclusion under Section 3(k) for computer programs per se. The patent term is 20 years from filing, providing exclusivity to recoup investments.
Non-Patentable Aspects in the Medical Domain
While devices are generally patentable, several exclusions under Section 3 of the Patents Act apply specifically to medical inventions, reflecting India’s public health priorities.
- Section 3(i) – Methods of Treatment and Diagnosis: This is the most relevant barrier. It excludes “any process for the medicinal, surgical, curative, prophylactic, diagnostic, therapeutic, or other treatment of human beings or any process for a similar treatment of animals.” Thus, surgical methods, diagnostic procedures, or therapeutic protocols cannot be patented. For example, a new way to perform laparoscopic surgery is non-patentable, but the laparoscopic instrument itself is. This provision prevents monopolies on life-saving techniques, ensuring doctors can practice freely without infringement fears. Diagnostic methods practiced on the body (in vivo) are barred, but in vitro diagnostics, like lab-based test kits, may be allowed if claimed as apparatuses rather than methods. Patenting medical devices in India involves hurdles like rigorous examinations and oppositions. Applicants often face objections under Section 3(i) if claims inadvertently include method steps; redrafting to focus on the device resolves this.
- Section 3(f) – Mere Arrangement of Known Devices: Patents are denied for “the mere arrangement or rearrangement or duplication of known devices, each functioning independently of one another in a known way.” A medical device that simply combines existing components without synergy, such as attaching a standard thermometer to a blood pressure cuff, won’t qualify. However, if the integration creates a novel function, like a smart cuff that auto-adjusts based on temperature readings, it could be patentable. There may be an objection u/s 3(f) as well, seeking synergy of action of all the components/ parts of the device, ensuring mutually interdependent actions of the said components of the device.
- Section 3(k) – Algorithms and Software: Pure software or mathematical methods are excluded, but if embedded in hardware with a tangible effect, like software in an ultrasound machine improving image resolution, it may be protected. With the advent of AI, ML, and IOT, most of the new devices have a potent software component that may be objected u/s 3(k).
- Section 3(d) – New Use of Known Substances: For devices involving pharmaceuticals, like drug-eluting stents, this section bars patents for mere discovery of new properties or uses of known substances unless enhanced efficacy is proven. Second medical uses are generally not patentable, impacting combination devices.
Objections u/s 3(d) may also be raised based on multiple cited documents during the prosecution.
Other exclusions include Section 3(e) for mere admixtures without synergy and Section 3(b) for inventions contrary to public order or morality, though rarely applied to devices. These safeguards align with India’s commitment to affordable healthcare, as seen in landmark cases like Novartis v. Union of India (2013), which reinforced strict standards against evergreening.
Patentable Medical Devices and Equipment: Categories and Examples
Medical devices that overcome these exclusions are widely patentable. The IPO grants patents for innovative apparatuses, systems, and compositions in various categories.
- Implants and Prosthetics: These are highly patentable if novel. Examples include bioresorbable stents with unique materials to reduce clotting, or orthopedic implants with 3D-printed lattices for better osseointegration. Patents focus on structural innovations, not implantation methods. Indian filings have surged in cardiology (e.g., pacemakers) and orthopedics.
- Consumables and Disposables: Items like advanced syringes with auto-retracting needles to prevent needlestick injuries, or smart bandages with sensors for wound monitoring, qualify. Patents emphasize safety features or material advancements.
- Electronic Equipment: Diagnostic and monitoring devices, such as portable MRI scanners or AI-enabled ventilators, are patentable. For instance, a wearable ECG device with real-time arrhythmia detection via proprietary algorithms can be protected, provided the claims highlight the hardware-software synergy. Filings in this area include hypothermia devices and infusion pumps.
- Surgical Equipment: Tools like robotic arms for minimally invasive surgery or endoscopic cameras with enhanced optics are eligible. Patents cover mechanical innovations, e.g., a scalpel with vibration reduction for precision.
- In-Vitro Diagnostic Reagents and Kits: Test kits for diseases like diabetes or COVID-19 are patentable as products. Claims must avoid diagnostic methods; instead, focus on the kit’s composition or apparatus. For example, a multiplex PCR kit with novel primers is protectable.
- Combination Devices: Drug-device combos, like inhalers with metered-dose delivery, can be patented if the integration is inventive. However, claims must steer clear of treatment methods. Trends show patents in dentistry (e.g., implants), ophthalmology (e.g., intraocular lenses), and urology (e.g., catheters).
Foreign entities dominate filings (about 70%), but domestic players like Tata Consultancy Services have patented AI diagnostics. Successful examples include patents for hypothermia devices and blood collection sets.
Possible solutions
Strategically, inventors should conduct freedom-to-operate searches to avoid infringement. Licensing and technology transfers are common, with patents enhancing market entry. The Make in India initiative supports local manufacturing, boosting patent incentives. Courts have upheld device patents, e.g., in disputes over inhalers, granting injunctions against infringers. Provisional filings allow 12 months to refine inventions.
To obviate any objection u/s 3(i) while drafting, care must be maintained to limit the claims around the device only, without considering any physiological association, especially in terms of human or animal. Secondly, the device claim must not be allied to a “method of diagnosis” or a “method of treatment”, but rather, for the process/ method part, “method of operating the device” may be claimed, by limiting the claim through a phrase, such as “in vitro”, never “in vivo”. Any such “in vivo” method through such a medical device would be considered non-patentable.
Further, to avoid any scope u/s 3(f), the interdependence of the components of the device should be highlighted in the claims.
Last but not least, any software part of the device must be clubbed with any operations of any of the hardware parts of the device to sail through any objection u/s 3(k).
Conclusion
In summary, medical devices and equipment in India are patentable, provided they meet statutory criteria and avoid exclusions like treatment methods. This framework promotes innovation while safeguarding public health, positioning India as a medtech hub. With rising filings in implants, diagnostics, and electronics, patents drive competitiveness and accessibility in healthcare.
R K Dewan & Co. is a leading Intellectual Property law firm in India, known for our deep expertise and long-standing commitment to protecting innovation. We work with businesses across industries, offering services such as medical device patent services and medical device patent filing. With a strong global reach and a client-focused approach, we support both Indian and international clients in securing, managing, and enforcing their IP rights. Backed by decades of experience, we help innovators and organizations safeguard their ideas and build lasting value in competitive markets.
