If you’ve developed a new variety of rose, apple tree, or ornamental shrub, you may have IP rights worth protecting. Plant breeders and horticulturists often overlook the specific legal tools available to them, assuming patent law applies only to machines, software, or chemicals. In fact, U.S. patent law has protected new plant varieties since 1930, and understanding how that protection works can make the difference between owning a commercially valuable variety and watching competitors propagate it freely.
At Goldstein Patent Law, we help plant breeders, nurseries, and agricultural companies understand their options. Here’s what a plant patent covers, who qualifies, and how it compares to the other forms of IP protection available for plants.
What Is a Plant Patent?
A plant patent is a specific category of U.S. patent established under 35 U.S.C. §§ 161 through 164 of the Patent Act. It grants an inventor the right to exclude others from asexually reproducing, using, offering for sale, or selling the protected plant variety throughout the United States for a period of 20 years from the application filing date.
The statute reads: whoever invents or discovers and asexually reproduces any distinct and new variety of plant, including cultivated sports, mutants, hybrids, and newly found seedlings, other than a tuber-propagated plant or a plant found in an uncultivated state, may obtain a patent.
Plant patents are issued by the U.S. Patent and Trademark Office and follow a separate examination track from utility patents, with their own rules around drawings, claim structure, and application format.
What Types of Plants Qualify?
The coverage of a plant patent is defined, in part, by what it excludes.
Asexually reproduced varieties are eligible. This covers plants reproduced by means other than seeds, including by the rooting of cuttings, layering, budding, grafting, inarching, division, slips, rhizomes, runners, corms, tissue culture, and similar methods. If your new variety can be reproduced asexually and meets the other requirements, it is potentially eligible.
Tuber-propagated plants are excluded. Plants where the edible part and the propagating part are the same, such as potatoes and Jerusalem artichokes, fall outside the plant patent statute. This exclusion was written into the original 1930 Plant Patent Act and has not changed.
Plants found in an uncultivated or wild state are excluded. A variety discovered growing in the wild cannot be plant-patented. However, a newly found seedling discovered in a cultivated area, such as a greenhouse or a managed field, can qualify. The applicant’s declaration must specifically state that the plant was found in a cultivated state.
Cultivated sports, mutants, and hybrids are included. A sport is a spontaneous mutation that produces a plant with distinct characteristics different from the parent plant. Mutants induced through selective breeding or controlled processes are also eligible. Hybrids created by crossing two distinct varieties qualify as well.
The Requirements: New and Distinct
To qualify for a plant patent, a variety must be both new and distinct.
New means the variety has not been sold or released to the public for more than one year prior to the filing date of the application. This follows the same statutory bar that applies to utility patents. Commercializing your variety before filing, even informally, can cut off your patent rights.
Distinct means the variety must differ from all known related plant varieties by at least one distinguishing characteristic that is clearly describable. That characteristic can relate to many aspects of the plant, including:
- Flower color, form, size, or fragrance
- Fruit characteristics such as flavor, size, shape, or color
- Leaf shape, color, texture, or structure
- Growth habit or vigor
- Disease resistance or environmental hardiness
- Blooming season or fruiting time
- Storage characteristics
The distinction must be stable, meaning the characteristic must reliably appear in asexual reproductions of the variety and not be a transient or environmentally induced trait.
These requirements are related to, but distinct from, the non-obviousness standard that applies to utility patents. Our post on non-obviousness in patent law covers that standard in depth if you are considering a utility patent as an alternative route.
What Rights Does a Plant Patent Grant?
A plant patent gives the patent holder the right to exclude others from:
- Asexually reproducing the patented plant variety
- Using the reproduced plant
- Offering the reproduced plant for sale
- Selling the reproduced plant
- Importing the asexually reproduced plant, or any part of it, into the United States
This is an important distinction from utility patents. A plant patent protects the specific reproduced plant variety. It does not, on its own, cover seeds, genes, traits, or the underlying biological processes, which may require separate utility patent protection to address fully.
The Plant Patent Application Process
The application process for a plant patent has several distinctive features that set it apart from a standard utility patent application.
Paper filing is required. Unlike most patent applications, plant patent applications must be filed on paper with the USPTO. Electronic filing through Patent Center is not available for plant applications.
A single claim is permitted. Plant patents are limited to a single claim. That claim covers the new and distinct plant variety as described. This differs significantly from utility patents, which typically include multiple independent and dependent claims providing layered protection.
Drawings or color photographs are critical. Because the distinguishing characteristics of a plant variety are often visual, the drawings in a plant patent application carry exceptional importance. Color photographs are permitted and often preferred, since they capture color-based distinctions that black-and-white drawings cannot. The USPTO requires that photographs or drawings show the plant’s distinctive features clearly.
A detailed botanical description is required. The specification must describe the plant in sufficient detail that a person skilled in the art can identify it. This includes technical botanical language alongside general horticultural description. The description should document all characteristics that distinguish the variety from related plants, including color values referenced by an accepted color chart such as the Royal Horticultural Society color chart.
Asexual reproduction must be demonstrated. The applicant’s declaration must state that the inventor has asexually reproduced the plant. This requirement confirms that the variety is stable and that the distinguishing characteristics carry through reproduction.
For a broader overview of how the patent application process works from filing through examination, our post on the patent application process covers each stage in detail. If you are not yet ready to file a full application, a provisional application can establish your filing date. Our guide on provisional patent applications explains what to include and why the details matter.
Plant Patents vs. Utility Patents for Plants
One of the most important decisions a plant breeder faces is choosing between a plant patent and a utility patent. The two are not mutually exclusive, and in some cases both apply.
The Supreme Court confirmed in J.E.M. Ag Supply, Inc. v. Pioneer Hi-Bred International, Inc. (2001) that plants are patentable subject matter under 35 U.S.C. § 101, the general utility patent statute, even though the Plant Patent Act exists as a separate provision. The two statutes have different requirements and offer different scopes of protection.
Key differences:
Scope of protection. A utility patent can cover seeds, genetic traits, methods of producing the plant, and the plant itself across both sexually and asexually reproduced forms. A plant patent covers only the asexually reproduced variety. For commercially significant innovations, particularly in agriculture, utility patents typically offer significantly broader and more enforceable coverage.
Claim structure. Utility patents allow multiple claims of varying scope, providing layered protection. A plant patent allows only one claim.
Eligibility. Plant patents require asexual reproduction and exclude tuber-propagated plants. Utility patents cover a much wider range of plant-related innovations.
Cost and complexity. Plant patent applications tend to be less expensive and faster to prepare than utility patent applications covering the same variety. For nursery breeders or horticulturalists focused on a specific variety rather than underlying genetics, a plant patent is often the more practical and proportionate tool.
Many companies in the seed and agricultural industries pursue utility patents because of the broader protection they provide. Nurseries, rose breeders, and fruit tree developers more commonly rely on plant patents, sometimes in combination with other protections.
Plant Variety Protection Certificates: A Third Option
Entirely separate from the patent system, the U.S. Department of Agriculture administers the Plant Variety Protection program under the Plant Variety Protection Act (PVPA), providing IP protection for new varieties of seeds, tubers, and asexually propagated plants through the USDA’s Plant Variety Protection Office (PVPO) rather than the USPTO.
PVPA certificates protect plant varieties for 20 years generally and 25 years for vines and trees. They differ from plant patents in several important ways:
Coverage. PVPA certificates cover sexually reproduced (seed-propagated) varieties and tuber-propagated plants, making them the primary protection tool for crops like soybeans, wheat, corn, and potatoes where plant patents do not apply.
Seed-saving exception. PVPA certificates historically allowed farmers to save seed from a protected variety for replanting on their own farms, a significant limitation compared to patent protection. Utility patents do not carry this exception.
Examination process. PVPA certificates are issued by the USDA rather than the USPTO and follow different examination standards focused on the variety being new, distinct, uniform, and stable.
For plant breeders with innovations that span sexually and asexually reproduced forms, or for agricultural varieties where seed-saving is a commercial concern, understanding the distinction between plant patents, utility patents, and PVPA certificates is essential to structuring an effective protection strategy.
Frequently Asked Questions
What kinds of plants are most commonly protected by plant patents?
Ornamental plants are among the most common subjects of plant patents, particularly roses, chrysanthemums, and other flowering varieties where breeders invest heavily in developing new colors, forms, and disease resistance. Fruit trees, including apple, peach, and cherry varieties, are also commonly patented, as are ornamental shrubs and landscape plants propagated through the nursery trade.
Can I get a plant patent for a variety I discovered rather than bred?
Yes, provided the discovery was made in a cultivated area rather than in the wild. If you found an unusual seedling in your greenhouse or managed garden that exhibits distinct and new characteristics, you may qualify as the inventor. Your declaration must state that the plant was found in a cultivated state.
What happens if someone asexually propagates my plant-patented variety without permission?
The plant patent gives you the right to seek legal remedies for infringement, including injunctive relief and damages. Unauthorized propagation of a protected variety for commercial sale is infringement regardless of whether the infringer was aware of the patent.
Can I protect my plant variety with both a plant patent and a PVPA certificate?
Yes. They are issued by different agencies and provide different rights. Having both can extend your coverage and fill gaps, particularly for varieties that have both commercial seed and vegetatively propagated markets.
How long does a plant patent application take?
Plant patent applications typically take one to two years from filing through examination and grant, though this varies with the USPTO’s current workload in the relevant technology area. The examination focuses on whether the variety is new and distinct as described and whether the botanical description is adequate.
Protecting the Variety You’ve Worked to Develop
A plant patent is a targeted, effective tool for plant breeders who have developed new asexually reproduced varieties worth protecting. Understanding whether a plant patent, a utility patent, a PVPA certificate, or a combination of these best serves your situation requires looking at your variety, your market, and your commercial goals together.
Contact Goldstein Patent Law to schedule a consultation. We’ll evaluate your variety, walk you through the available protection options, and help you build a strategy designed to protect your work for the full term of your rights.
