Can You Patent Plant Innovation in India? Understanding of Section 3(h) of the Indian Patent Act, 1970February 19, 2026

Most plant innovation begins with a real problem in the field. A disease spreads faster than expected. A pest shows up earlier each year. A drought hits at the wrong time. Or a crop simply does not perform the way it should, even when everything looks right on paper. For companies and researchers working in plant genetics, crop protection, and agricultural biotechnology, these challenges lead to meaningful innovations: better formulations, improved delivery systems, stronger plant resilience, and smarter ways to protect yield. Before filing in India, many innovators ask one key question: can we patent this in India? The short answer is often yes, but India has patent eligibility rules that can surprise global applicants. One of the most important is Section 3(h) of the Indian Patents Act, 1970.

Section 3(h) states that a method of agriculture or horticulture is not patentable in India. The intent behind this exclusion is both practical and policy driven. India’s patent system aims to encourage innovation while also protecting public interest, and agriculture is central to India’s economy, society, and culture. The fundamental idea is straightforward: basic farming practices should remain available to farmers and the public, not locked behind patent rights. As a result, India generally does not allow patents for inventions that are essentially “how to farm,” such as broad methods of growing, propagating, or cultivating plants using routine steps. For innovators accustomed to U.S. practice, where plant-related methods can often be patented if they are novel, non-obvious, and properly supported, this approach can feel unfamiliar. Understanding this difference is especially important because India is a major global market for agricultural and plant-based innovation, with crops such as cotton playing a critical role across agriculture and downstream industries. For U.S. innovators in plant genetics, crop protection, and gene-editing technologies, India represents a strategically important jurisdiction for long-term innovation and IP protection.

In practice, Section 3(h) can become tricky because the Indian Patents Act does not define “agriculture” or “horticulture”. As a result, examiners often rely on guidance documents published by the Indian Patent Office (IPO), including the IPO Manual and biotechnology examination guidance. These materials include examples of subject matter that may fall under Section 3(h), such as methods of producing plants, methods of improving soil, methods of producing mushrooms, methods of cultivating algae, and methods for weed removal. IPO biotechnology guidance also suggests that conventional methods performed on actual open fields should generally be treated as agricultural or horticultural methods. The practical takeaway is straightforward: if a claim reads like a cultivation protocol, it is more likely to trigger a Section 3(h) objection. That does not mean the invention is not innovative, but the claim language may resemble a routine field practice.

The challenge is that modern agriculture is not just “farming better.” It is biology, chemistry, and engineering working together. Today’s plant innovation includes not only crop protection solutions, but also advanced genetic tools that were never part of traditional plant breeding. Researchers are now using gene editing platforms such as CRISPR and other targeted DNA editing approaches to develop traits like improved disease resistance, stress tolerance, and better yield stability. These innovations reflect how plant science has evolved into a highly technical space, and why patentability questions today are very different from those that shaped conventional agricultural exclusions decades ago.

In addition, today’s plant innovation often includes technical interventions such as:

• disease control treatments with defined active agents
• insect prevention strategies with targeted delivery
• seed treatments for stress tolerance or improved vigor
• microbial consortia designed to support plant health
• formulations that improve stability, uptake, or field performance
• gene regulation technologies, including RNA based approaches
• gene editing based trait development, including CRISPR enabled interventions

Many of these inventions are highly technical and research driven. They are not traditional farming. They are scientific solutions to agricultural challenges. But in India, even technical inventions can face Section 3(h) objections if the claims are drafted in a way that resembles routine field activity. This is why Section 3(h) objections appear frequently in plant related prosecution, particularly when claims are written broadly as a “method of growing, propagating, or cultivating a plant” or a “method of controlling disease by applying” a composition. Sometimes the invention is strong, but the framing invites the objection.

The good news is that Indian courts have begun narrowing the application of Section 3(h). Over the last few years, Indian High Courts have issued decisions that are especially helpful for innovators in plant health and crop protection. The shared message is encouraging: Section 3(h) is not a blanket ban on every invention involving plants. Indian courts are emphasizing that Section 3(h) is meant to exclude traditional agricultural practices and should not be applied indiscriminately to technical innovations. Three recent decisions illustrate this trend and are shaping how innovators and patent professionals think about patenting plant related methods in India.

In Decco Worldwide Post Harvest Holdings B.V. & Anr. v. The Controller of Patents and Designs (Calcutta High Court, 2023), the applicant sought protection for a method of treating banana plants affected by Black Sigatoka, a fungal disease, using a fungicidal treatment. The IPO rejected the application under Section 3(h), treating it as a method of agriculture. The Calcutta High Court set aside the refusal, noting that the Controller had not sufficiently explained why a plant disease treatment method should be categorized as an agricultural method under Section 3(h). The Court emphasized that Section 3(h) is intended to cover traditional agricultural methods, and a technical plant treatment method should not be rejected without clear reasoning. The Court also clarified that IPO manuals are guidance tools and cannot override the statute. The matter was remanded for fresh examination. This decision supports the idea that plant disease treatment methods may be patentable and that Section 3(h) should not be applied mechanically.
🔗 Decco Worldwide judgment: https://indiankanoon.org/doc/96422861/

In Mitsui Chemicals Inc. v. Controller of Patents (Delhi High Court, 2024), the invention related to preventing plant disease and insect damage. The IPO refused the application under Section 3(h) and also raised issues around amendments. The Delhi High Court set aside the refusal and remanded the case, emphasizing that the IPO must conduct a nuanced and detailed analysis. The Court stressed the importance of distinguishing between purely agricultural methods and technical or scientific solutions to agricultural problems. This decision reinforces that India’s patent system is not meant to block genuine innovation simply because it is used in agriculture, and it encourages a more balanced, reasoned approach at the examination stage.
🔗 Mitsui Chemicals reference (case overview): https://www.lexology.com/library/detail.aspx?g=c28b9810-2a4e-4bc3-9ca0-4b8fd8f4c3ae

In Syngenta Crop Protection AG v. Assistant Controller of Patents and Designs (Delhi High Court, 2024), the invention involved controlling or preventing infestation of rice plants by a phytopathogenic microorganism. The IPO refused the application under Section 3(h). Syngenta appealed and also proposed amendments. The Delhi High Court allowed the appeal, permitted the amendments, and remanded the matter for de novo examination. The Court aligned with earlier decisions and confirmed that plant treatment inventions should not be excluded simply because they relate to agriculture. This decision adds further momentum to the view that Section 3(h) should primarily exclude traditional practices, not technical plant treatment inventions.
🔗 Syngenta case snippet: https://indiankanoon.org/doc/192885741/

For innovators filing in India, these decisions show that India can support patents in plant innovation, but drafting strategy matters. The Indian Courts appear to be drawing a line between what belongs in the public domain as conventional farming practice and what deserves patent protection as a technical advancement. Applicants can reduce Section 3(h) risk by avoiding claims that resemble routine farming steps. Instead, applicants should emphasize the technical contribution and ensure that the technical features of the invention are clear from the claims and specification.

In practice, a few strategies can improve the chances of smoother prosecution in India:

• Avoid overly broad “method of growing, propagating, or cultivating” claim language when possible
• Highlight the technical features that distinguish the invention from routine field practice
• Include composition and formulation claims as a strong anchor, especially for crop protection inventions
• Support technical advantages in the specification, such as improved efficacy, reduced resistance risk, or improved field stability
• For gene editing or CRISPR related innovations, clearly define the technical intervention and the claimed output, and avoid framing the invention as a general cultivation method

Section 3(h) is designed to keep traditional farming practices in the public domain, but modern plant science is increasingly technical, and recent court decisions show a trend toward a more balanced interpretation. For innovators, this is encouraging. Patent protection in India is achievable, but it requires careful claim drafting and clear technical framing.

In addition to patents, innovators developing new plant varieties should also be aware that India also provides protection through Plant Breeder’s Rights (PBRs) under a separate statutory framework, which may be relevant where patent protection is limited by Section 3(h). For more discussion on PBRs rights, click here.

At MVS, our focus is helping innovators understand how India’s patent eligibility framework applies to plant-related inventions, allowing them to design protection strategies that support innovation while aligning with commercial and regulatory realities.

Monica Nagpal is a Patent Agent at McKee, Voorhees & Sease, where she supports the firm’s life-sciences & agritech clients with patent preparation, prosecution and portfolio management.  For additional information please visit www.ipmvs.com or contact Monica directly via email at monica.nagpal@ipmvs.com.