Samsung Electronics, SK Hynix and Micron are facing a new US class-action lawsuit that puts the memory-chip boom under legal scrutiny.
The case lands at an awkward moment for the industry as AI demand has pushed memory prices sharply higher, data-centre buyers are racing to secure supply, and consumer electronics companies are starting to pass higher costs on to customers.
Now the legal question is whether the world’s three biggest DRAM makers simply followed the same market incentives, or coordinated to squeeze supply and lift prices.
What the DRAM lawsuit alleges
The complaint was filed on June 25 in the US District Court for the Northern District of California.
The case is Garciaguirre et al v Samsung Electronics Co Ltd et al, and it has been assigned to Judge Nathanael M Cousins.
The plaintiffs include 14 consumers and three small businesses involved in PC building and distribution.
They are seeking class-action status, an injunction and treble damages, which means damages could be tripled if the plaintiffs ultimately prove antitrust violations.
The core allegation is simple: Samsung, SK Hynix and Micron allegedly restricted output of conventional DRAM, especially older DDR3 and DDR4 memory, while shifting capacity toward higher-margin high-bandwidth memory, or HBM, used in AI systems.
The plaintiffs argue that the AI pivot became a cover for an artificial shortage in mainstream memory.
Together, the three companies control roughly 90% of the global DRAM market, which is why their production choices matter so much.
The complaint says conventional DRAM prices have risen about 700% over four years.
For readers, this is the legal angle behind a price shock they may already be seeing.
Apple recently raised prices on several MacBook and iPad models, with the MacBook Pro 1TB rising by $300, citing soaring memory and storage costs.
Not the first time, but a harder case
This is not the first time DRAM pricing has attracted antitrust scrutiny.
In the mid-2000s, Samsung and Hynix pleaded guilty in a US Justice Department investigation into DRAM price fixing.
Samsung paid a $300 million criminal fine, while Hynix paid $185 million.
Micron cooperated with the earlier probe and avoided a corporate fine, though one Micron employee later pleaded guilty to obstruction of justice.
That history gives the new lawsuit political and legal weight. But it does not make the current case easy.
A similar class action filed in 2018 against Samsung, SK Hynix and Micron was dismissed in 2020, and the dismissal was upheld by the Ninth Circuit in 2022.
Courts found that the plaintiffs had not shown enough evidence of an actual agreement among the companies.
That distinction matters as in antitrust law, companies can independently make the same business decision if they face the same market conditions.
The legal experts call it parallel conduct.
What plaintiffs usually need to prove is coordination, some form of agreement, communication or shared plan to restrict competition.
The new case tries to clear that hurdle by focusing on the timing of production cuts, the industrywide shift toward HBM, and the sharp rise in conventional DRAM prices.
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