Editorial commentary
A plant patent is a U.S. patent granted under 35 U.S.C. § 161 to anyone who invents or discovers and asexually reproduces a distinct and new variety of plant. It protects the plant as a genetic entity that has been reproduced without seeds — by grafting, budding, rooting cuttings, or similar means — not a plant grown from seed or propagated from tubers. It is one of the USPTO’s three patent categories alongside the utility patent and the design patent, and it is a distinct legal instrument from the Plant Variety Protection Act (PVPA), a separate USDA statute often confused with it.
Last verified August 25, 2026 against USPTO’s “Apply for a Patent” overview and its “General Information About 35 U.S.C. 161, Plant Patents” page.
What qualifies for a plant patent
Under 35 U.S.C. § 161, a plant patent covers “a living plant organism which expresses a set of characteristics determined by its single, genetic makeup or genotype, which can be duplicated through asexual reproduction.” Eligible subject matter includes cultivated sports, mutants, hybrids, newly found seedlings, and transformed plants. Algae and macro-fungi qualify as “plants” for this purpose; bacteria do not.
The defining requirement is asexual reproduction — propagating the plant “by means other than from seeds” so the resulting plant is an exact genetic duplicate of the original. USPTO recognizes methods such as rooting cuttings, grafting, budding, layering, division, bulbs, slips, rhizomes, runners, corms, tissue culture, apomictic seeds, and nucellar embryos as acceptable asexual reproduction. Three categories are explicitly excluded from plant-patent protection:
- Plants propagated from ordinary (non-apomictic) seeds — i.e., sexually reproduced plants
- Tuber-propagated plants, such as the potato and the Jerusalem artichoke
- Plants found growing in an uncultivated state
A plant patent’s term runs 20 years from the U.S. filing date — the same term length, and the same term statute (35 U.S.C. § 154(a)(2)), as a utility patent. Unlike a utility patent, however, a plant patent carries no periodic maintenance fees: 35 U.S.C. § 41(b) states that “no fee may be established for maintaining a design or plant patent in force.”
How this differs from a utility patent on a plant
A plant patent is not the only way the patent system can protect a plant. USPTO also accepts utility patent applications with claims to plants, seeds, genes, and traits — a practice the Supreme Court confirmed as proper patentable subject matter in J.E.M. Ag Supply Co. v. Pioneer Hi-Bred International, Inc., 534 U.S. 124 (2001). This means the same plant-breeding invention can, in principle, be pursued through either route, or both at once, but the two protect genuinely different things:
- A plant patent covers the whole plant as a single asexually-reproduced genetic entity — one claim, covering the variety as reproduced.
- A utility patent on a plant can claim an underlying gene, trait, breeding or transformation method, or seed itself, with multiple claims of varying scope — and it can cover a plant regardless of whether it is asexually or sexually reproduced.
Utility applications claiming plant subject matter are also more expensive to prepare and prosecute, and unlike plant patents they do carry USPTO maintenance fees. A university plant-breeding program disclosing a new variety needs to determine early which claim scope actually fits the invention — the variety itself (plant patent) or an underlying trait or method (utility patent) — since that choice, not just cost, determines what the resulting right will and will not cover.
How this differs from the Plant Variety Protection Act (PVPA)
The Plant Variety Protection Act is not a patent at all. It is a separate federal statute, administered by USDA’s Plant Variety Protection Office rather than the USPTO, that grants a certificate-based IP right in a plant variety. Historically PVPA covered only sexually reproduced (seed-grown) and tuber-propagated varieties — precisely the categories a plant patent excludes — but the 2018 Farm Bill extended PVPA eligibility to asexually reproduced varieties as well, creating a genuine overlap with plant patents for that category for the first time. A breeder with an eligible asexually-reproduced variety can now choose between a plant patent and a PVP certificate, or in some cases pursue both.
| Protection | Administered by | Statutory basis | Covers | Term |
|---|---|---|---|---|
| Plant patent | USPTO | 35 U.S.C. § 161 | Asexually reproduced varieties only (not seed-grown, not tuber-propagated) | 20 years from filing date |
| Utility patent (on a plant) | USPTO | 35 U.S.C. § 101 | A gene, trait, breeding/transformation method, or seed — any reproduction mode | 20 years from earliest filing date |
| PVP certificate (PVPA) | USDA (PVPO) | 7 U.S.C. §§ 2321–2582 | Sexually reproduced and tuber-propagated varieties; asexually reproduced varieties since the 2018 Farm Bill | 20 years from issue (25 years for trees/vines) |
The practical distinction to hold onto: a plant patent and a utility patent are both examined by the USPTO under patent law and require no showing of statutory exemption exposure, while a PVP certificate is issued by an entirely different agency under a different statute that includes a farmer’s exemption and a research exemption with no direct patent-law equivalent. Confusing “Plant Patent” with “Plant Variety Protection” is a common error — they share a subject (plants) but not an agency, a statute, or an eligibility rule.
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