US Justice Department argues seed patents stifle agricultural competition
A May 2026 court submission suggests dominant seed firms use intellectual property rights to suppress innovation and pass subsidy costs onto taxpayers.
The US Department of Justice has argued that patents on seeds are obstructing competition and research within the agriculture industry, according to a May 2026 court filing. The submission, issued by the Antitrust Division in a legal dispute between agrochemical giant Corteva and genetic engineering startup Inari, contends that dominant seed companies utilise patent rights to suppress innovation, limit access to genetic material, and raise prices.
The filing indicates that the government views the extension of patent rights as an illegitimate method for companies to exclude competitors. Notably, the document originated from the Antitrust Division rather than the Civil Division, which typically handles intellectual property matters. This distinction suggests the Justice Department sees the current application of patent law as a barrier to fair market competition rather than a standard protection of innovation.
Market concentration in the sector is significant, with the US Department of Agriculture finding that two companies control more than 70% of US corn and soybean seed sales. The top four cottonseed companies control nearly 94% of that market. This consolidation has coincided with a sharp rise in costs; seed prices have risen by 463% since 1990, while farmer profits have stagnated. During the same period, the price farmers receive for crops increased by only 56%.
The filing highlights that threats of patent-infringement lawsuits have prevented independent researchers and public plant breeders from conducting comprehensive genetic assessments of economically crucial crops. Although the patent system requires applicants to disclose how inventions are made, seed companies have restricted access to this genetic material. Consequently, no comprehensive genetic assessments of key crops have been conducted to date, leaving the industry unaware of vulnerabilities to emerging pests and pathogens.
An August 2025 study cited in the context of the dispute indicates that for every 1% increase in farm subsidies, seed companies raise prices by 0.5%. Iowa farmer Noah Coppess testified in October 2025 that farmers are "price takers" due to consolidation in input and equipment supply chains. The Justice Department’s position is that companies should not be able to restrict the public from sequencing genetic material deposited as part of the patent protection process.
The legal case remains ongoing, but a ruling in favour of the Justice Department’s interpretation could allow competitors to understand the strengths and weaknesses of existing seed varieties. This transparency could foster new breeding programs and provide a check on seed prices, potentially reducing the financial burden on American farmers and the taxpayers who fund agricultural subsidies.
