ITC Opens Patent Probe Into Micron's DDR5 Server Memory, Following Samsung's $898 Million Settlement With Netlist

The U.S. International Trade Commission voted on September 23, 2026 to open Investigation No. 337-TA-1523, targeting Micron Technology and its downstream customers over allegations that their DDR5 server memory infringes four patents held by Irvine, California-based Netlist, according to a PR Newswire release from Netlist and confirmed by Morningstar's Dow Jones Newswires report.

The named respondents are Micron Technology, Micron Semiconductor Products, Hewlett Packard Enterprise, Lenovo Group and its U.S. subsidiary, and Super Micro Computer, according to BigGo Finance. The case stems from a complaint Netlist filed on August 11, 2026 and amended on August 25, according to Aroged.

What Netlist Is Claiming

Netlist alleges the companies infringe U.S. Patent Nos. 10,025,731; 10,217,523; 12,373,366; and 12,675,407, according to the ITC's own notice as cited by PR Newswire. Tech Times reports the patents cover signal-integrity circuits (Decision Feedback Equalization and On-Die Termination) and on-module power management that became standard features of DDR5 RDIMMs and MRDIMMs once the industry moved past DDR4. Netlist is asking the ITC for a limited exclusion order and cease-and-desist orders that would block the products from entering the country, according to PR Newswire.

Netlist CEO C.K. Hong tied the case directly to the company's prior fight with Samsung. "We are pleased with the ITC's decision to institute this investigation," Hong said in the PR Newswire statement. "The Samsung agreement established an important industry benchmark for the value of our IP. We intend to continue our enforcement efforts against unauthorized users such as Micron."

The Samsung Template

Samsung settled its own dispute with Netlist on August 5, 2026, agreeing to pay up to approximately $898 million, according to Tech Times. Under that deal, Samsung got access to Netlist's patent portfolio and agreed to supply Netlist with DRAM and NAND and purchase 10 million Netlist shares, according to Yahoo Finance. That settlement came after two Texas jury verdicts against Samsung totaling $421 million in 2023 and 2024, Yahoo Finance reported.

This is not Netlist's first swing at the ITC this year. According to BigGo Finance, the Micron case marks Netlist's third Section 337 DRAM investigation filed with the commission within a year.

Micron's Counterweight

Netlist's win column isn't spotless. Earlier this month the Federal Circuit upheld Patent Trial and Appeal Board rulings that invalidated five separate Netlist patents Micron had challenged, according to TradingView. Those are different patents than the four at issue in this new ITC case, but the ruling shows Micron has successfully knocked down Netlist claims before.

An ITC investigation is not a finding of guilt. Netlist still has to prove infringement, and Micron and the other respondents can challenge both infringement and the validity of the patents themselves, TradingView reported. No Micron, Supermicro, HPE, or Lenovo statement on the new investigation appears in the available record.

A reasonable skeptic could look at the pattern here and see a smaller patent-holding company using serial ITC filings and the threat of an import ban to extract settlements from an industry that can't afford supply disruptions during an AI infrastructure boom. That's a fair reading of the incentives at play, particularly given Netlist's rapid succession of filings. It's also true that Netlist has a real track record of jury verdicts and a completed settlement with the world's largest DRAM producer, which cuts against dismissing the claims as pure leverage plays.

What Happens Next

The ITC will assign the case to an administrative law judge, who will schedule an evidentiary hearing and issue an initial determination, subject to full Commission review, according to Aroged. The commission will set a target date for completion within 45 days of instituting the investigation, and any remedial order becomes final 60 days after issuance unless the U.S. Trade Representative blocks it on public policy grounds, per PR Newswire. ITC cases typically move to trial within about a year.

On Thursday, September 24, shares moved on the news: Supermicro fell 3.4%, Micron fell over 1.7%, HPE traded roughly flat, and Netlist itself fell around 2% in morning trading amid broader market weakness, according to Yahoo Finance. Tech Times noted Micron is the only U.S.-headquartered DRAM maker among the major players, meaning it carries unique exposure if the commission ultimately orders an import exclusion covering its server memory lines. Whether the ITC's administrative law judge finds actual infringement, rather than just grounds to investigate, remains the open question that will determine if Micron ends up writing a check anywhere near Samsung's $898 million benchmark.