Bayer faces U.S. antitrust suit over GMO corn seed market

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Bayer faces antitrust suit GMO corn

Highlights

Bayer faces a proposed class action in the U.S. District Court for the Eastern District of Missouri alleging anti-competitive conduct in the genetically engineered corn seed market.
The lawsuit claims Bayer blocked independent companies from using NK603 genetic material after patent expiry in 2022 and continued charging royalties and increasing licensing fees.
Nearly all U.S. genetically engineered hybrid corn seeds carry Bayer's NK603 trait, with about 92% of corn acres using herbicide-tolerant seeds, highlighting Bayer's significant market influence.

Lawsuit targets corn seed licensing practices

According to Reuters, Latham Quality, an Iowa-based family-owned seed company, alleges in a federal lawsuit that Bayer used anti-competitive conduct to monopolize the U.S. market for genetically engineered corn seeds, according to court documents made public on Tuesday. The proposed class action, filed last month in the U.S. District Court for the Eastern District of Missouri, seeks treble damages for losses that Latham and similar companies allegedly sustained.

The complaint says Bayer controls the market for corn seeds engineered to resist Roundup, its widely used weedkiller, and has reaped hundreds of millions, if not billions, of dollars through that position. It alleges Bayer blocked independent seed companies from using its genetic seed material to develop competing generic products tied to the NK603 trait, even after its last patent on NK603 expired in 2022.

Latham further alleges Bayer continued charging royalties on seed grown from its genetic material and raised licensing fees. The lawsuit also claims Bayer retaliated when Latham did not abandon its efforts, with sales representatives for Bayer brands allegedly using non-public information to take business from the Iowa company, leaving it near bankruptcy.

Bayer says the allegations lack merit and that it will respond in court. The company says it competes fairly across its agricultural business and complies with applicable laws, adding that crop input and corn seed markets are competitive, fair and diverse.

Broader pressure on farm input competition

The case adds to wider regulatory and political focus on concentration in the U.S. seed industry. The Department of Justice said last week that Bayer removed potentially anti-competitive provisions from a loyalty program for independent seed companies that license its technology to produce seeds.

The lawsuit lands as President Donald Trump says his administration will address risks from anti-competitive behavior in food supply chains. It also comes as U.S. crop farmers face a fourth straight year of shrinking margins while dealing with elevated costs for seed, fuel and fertilizer.

According to the complaint, nearly all genetically engineered hybrid corn seeds sold in the U.S. carry Bayer's NK603 trait. U.S. government estimates say about 92% of corn acres are planted with herbicide-tolerant seeds, underscoring the commercial importance of the market at the center of the dispute.

We previously reported on the U.S. Justice Department’s move to accelerate reviews of whistleblower (qui tam) complaints under the False Claims Act involving federally funded public benefits programs. Our coverage explained that the Civil Division will conduct an initial review within 60–120 days and route stronger matters more quickly for potential prosecution, as part of a broader push to curb fraud, waste, and abuse in programs like housing, food, and medical care.

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