Netlist has filed a new complaint at the US International Trade Commission seeking to block imports of Micron memory chips used in AI hardware made by Nvidia, Google and Broadcom. The complaint, first filed under seal on Friday and announced publicly Tuesday, alleges infringement of two Netlist patents covering high bandwidth memory, the stacked DRAM that feeds modern AI accelerators.
The Irvine, California company asked the tribunal to bar imports of Micron DRAM devices and the graphics processing units, servers and other products that incorporate the allegedly infringing technology. It is seeking exclusion and cease-and-desist orders against Micron and its downstream customers, which the complaint names collectively as respondents.
Which patents, which products
The case rests on US Patent Nos. 12,308,087 and 12,646,537. Netlist alleges the patents cover at least Micron’s HBM3E, HBM4 and HBM4E product lines, the memory generations shipping in volume for AI training and inference systems. HBM sits directly on or beside the accelerator die, and its bandwidth is a primary constraint on AI chip performance, which is why an import threat against it carries real leverage.
Netlist is represented by Sterne Kessler Goldstein & Fox and Irell & Manella, two firms with long histories in patent litigation. The company did not announce a damages claim; the ITC route is about blocking imports, and a parallel district court case would typically seek money.
Second front in a running war
This is the second ITC action between the companies this year. On August 11, Netlist filed a complaint against Micron, Super Micro Computer, Hewlett Packard Enterprise and Lenovo alleging that Micron’s DDR5 RDIMMs and MRDIMMs infringe four Netlist patents. The ITC instituted that case as Investigation 337-TA-1523 on September 23, and the Federal Register published the notice of institution on September 25.
| Case | Filed | Products | Named downstream |
|---|---|---|---|
| 337-TA-1523 | Aug 11, 2026 | DDR5 RDIMM/MRDIMM | Super Micro, HPE, Lenovo |
| New HBM case | Sep 25, 2026 | HBM3E, HBM4, HBM4E | Nvidia, Google, Broadcom |
The new case escalates the stakes sharply. Server memory modules are replaceable components, but HBM is soldered into every AI accelerator that matters, and the named downstream parties include the three companies whose products dominate AI data center buildouts. An exclusion order covering Nvidia GPUs would be an event with no recent precedent in the memory business.
The August case gives a template for how this proceeds. After the complaint was filed, the Federal Register solicited public interest comments on whether blocking DRAM imports would affect public health, welfare, competitive conditions and consumers. Respondents had eight calendar days to file. The same process will play out here, with the added complication that the accused products sit inside systems from companies that are not respondents but whose supply chains would feel any order.
Why the ITC matters
The ITC moves faster than district courts and can issue exclusion orders that block imports of infringing products into the United States, subject to a 60-day presidential review period. The commission weighs public interest factors before granting relief, and respondents in AI supply chains routinely argue that blocking components would harm US competitiveness. Netlist will have to answer those comments as the case proceeds, and the commission has shown in past technology cases that it takes the argument seriously when the accused products are critical infrastructure.
Netlist has a history of winning on these patents against larger opponents. It previously litigated against Micron over DDR memory and secured settlements, and the company’s patent portfolio traces back to its early work in memory module design, including innovations around buffered memory architecture that became standard in servers. Its stock trades on the OTCQB market, and the company has no meaningful product business beyond licensing, which makes litigation its core revenue strategy. That profile cuts both ways: it makes Netlist a persistent plaintiff, and it lets defendants argue the company is a patent assertion entity rather than an operating manufacturer.
Micron did not immediately comment on the new filing. The company is the only US-based maker of HBM at scale and has been selling out its HBM3E production to AI customers, with HBM4 sampling to lead customers ahead of volume production expected next year. Micron’s Boise headquarters and its expanding US fabs give it political weight in Washington, which will matter if the case gets far enough for the presidential review question to arise.
What happens next
The ITC will decide whether to institute the new investigation, a decision that typically takes about a month from filing. If instituted, target dates for a final determination usually land 16 to 18 months out, though settlements are common well before that. Micron settled the previous DDR dispute rather than litigating to the end, and the economics of a settlement here, a per-unit royalty on HBM shipments, are straightforward for both sides to calculate. For Nvidia, Google and Broadcom, the practical risk is low in the near term but nonzero at the tail, and their licensing teams will now be dealing with Netlist directly rather than leaving the fight to Micron.
For the AI hardware supply chain, the case adds another layer of legal risk to a memory market already running at capacity. Any scenario in which Micron HBM imports face exclusion would push buyers toward Samsung and SK hynix, the two Korean suppliers who share the HBM market with Micron, and would give them pricing leverage in a segment where they already have it. Data center operators signing multi-year capacity deals would also face the question of whether their supplier’s product line has a litigation tail.
The broader context is a memory industry flush with AI demand. Chinese flash-memory maker YMTC’s parent is preparing a $4.9 billion Shanghai IPO on the back of the same boom, and memory pricing across DRAM and NAND has firmed through 2026. Litigation risk is the kind of thing that does not show up in capacity plans until it does, and the ITC docket is where it shows up first.