Plant Patents and Plant Variety Protection in the US

Two distinct federal frameworks govern intellectual property protection for plants in the United States: plant patents under Title 35 of the U.S. Code and plant variety protection certificates under the Plant Variety Protection Act. Choosing between them — or determining eligibility for either — depends on how the plant reproduces, whether it qualifies as a distinct and new variety, and which agency administers the applicable program. The regulatory boundaries between these systems create meaningful consequences for breeders, agricultural businesses, and research institutions. For broader context on how these frameworks fit within U.S. patent law generally, see the Patent Law Authority home.

Definition and scope

Plant patents are authorized under 35 U.S.C. §§ 161–164, which grant inventors the right to patent "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." Administration falls to the United States Patent and Trademark Office (USPTO). A plant patent confers a 20-year term from the filing date, consistent with utility patent duration under 35 U.S.C. § 154, and covers asexually reproduced plants — those propagated by cuttings, grafting, budding, or division rather than by seed.

The Plant Variety Protection Act (PVPA), codified at 7 U.S.C. §§ 2321–2582, operates under a separate agency — the USDA's Plant Variety Protection Office (PVPO) within the Agricultural Marketing Service. PVPA certificates apply primarily to sexually reproduced plants (seed-propagated varieties) and, since a 1994 amendment, to tuber-propagated species such as potatoes. Protection under a PVPA certificate runs 20 years for most crops and 25 years for trees and vines (7 U.S.C. § 2483).

A third avenue exists through utility patents under 35 U.S.C. § 101. The U.S. Supreme Court confirmed in J.E.M. Ag Supply, Inc. v. Pioneer Hi-Bred International, Inc., 534 U.S. 124 (2001), that sexually reproduced plants and plant varieties are patentable as utility patents — a broader and more powerful form of protection than either the plant patent or PVPA certificate. More on patentable subject matter covers the full scope of § 101 eligibility analysis.

How it works

Plant patents (USPTO)

The prosecution process for a plant patent tracks the standard utility patent workflow but includes plant-specific requirements. The applicant must:

The USPTO Plant Patent Guidelines define the required disclosure content. Examination proceeds before USPTO examiners with botany expertise. On issuance, the patent bars others from asexually reproducing, selling, or using the patented plant variety without authorization.

PVPA certificates (USDA)

PVPA applicants submit to the PVPO a variety description, a seed or propagating material deposit, and evidence of distinctness, uniformity, and stability (DUS) — the three substantive criteria. The PVPO examines DUS documentation and growing trial data. A granted certificate gives the holder the exclusive right to sell, offer for sale, reproduce, import, export, and condition the protected variety. Two statutory exceptions limit certificate scope that do not exist in patent law: the research exemption allows breeders to use protected varieties in developing new varieties without infringement, and the crop exemption (also called the saved-seed exemption) permits farmers to save seed from a protected variety for replanting on their own holdings (7 U.S.C. § 2543). Neither exemption applies to utility patents covering the same plant material.

Common scenarios

Ornamental plant breeding — Nursery operations developing new rose, chrysanthemum, or orchid cultivars through clonal propagation are the prototypical plant patent applicants. Because the new variety is reproduced asexually, a plant patent provides a direct fit. Color, form, and bloom time differentiate the variety as "distinct."

Field crop seed development — Corn, soybean, or wheat breeders producing new open-pollinated varieties through sexual reproduction face a choice between a PVPA certificate and a utility patent. Seed companies protecting inbred lines and hybrid parents commonly pursue utility patents because they eliminate the saved-seed exemption, providing stronger downstream control.

Genetically engineered plant varieties — Transgenic plants incorporating novel traits are typically protected through utility patents covering both the plant and the inserted gene construct. The regulatory context for patent law page addresses how agency oversight from the USDA, EPA, and FDA intersects with patent rights for biotech crop varieties.

Tuber-propagated species — Potato varieties qualify for PVPA protection following the 1994 amendment but are expressly excluded from plant patents under 35 U.S.C. § 163. Utility patents remain available for potato varieties meeting § 101 eligibility.

Decision boundaries

The table below summarizes the 3 primary frameworks across key dimensions:

Key boundary rule: If a plant reproduces sexually and the breeder seeks to eliminate the saved-seed and research exemptions, a utility patent is the only mechanism that accomplishes both objectives — a PVPA certificate cannot be structured to remove those statutory carve-outs. If the plant is exclusively asexual in reproduction and the applicant cannot meet utility patent disclosure requirements for a broader claim, the plant patent route offers a lower-barrier path with defined botanical description standards.

A plant cannot receive both a plant patent and a PVPA certificate for the same variety, but it can be protected simultaneously by a utility patent and subject to PVPA certification — though in practice the stronger utility patent typically renders the PVPA certificate redundant. Breeders evaluating protection strategy for plant patent law should analyze which statutory framework aligns with the reproductive biology of the variety and the commercial threats they seek to foreclose.