Netlist, Inc. v. Samsung et al. — ITC Institutes New Section 337 Investigation Targeting Samsung Memory in AI Chips (337-TA-1511)

Background

Netlist, Inc. is a California-based memory technology company that holds a portfolio of patents covering innovations in DRAM memory module design and interface protocols, including high-bandwidth memory (HBM) and server-grade DDR5 RDIMM and MRDIMM configurations. Netlist has been one of the most active patent plaintiffs in the semiconductor memory space over the past decade, filing parallel actions in district courts and at the ITC to maximize leverage and seek exclusion orders against infringing imported products.

On June 16, 2026, Netlist filed a Section 337 complaint with the ITC alleging that Samsung’s flash memory products — and devices incorporating those products from Google, Supermicro, NVIDIA, and Broadcom — infringe two recently issued Netlist patents. This is Netlist’s second active Section 337 investigation: its first (Inv. No. 337-TA-1510), covering six different Netlist patents, was instituted on September 30, 2025, and is awaiting an evidentiary hearing. On July 16, 2026, the Commission voted to institute the new investigation.

The Investigation

The newly instituted investigation (337-TA-1511) involves two Netlist utility patents:

• U.S. Patent No. 12,646,537 — covering methods and systems related to high-bandwidth memory (HBM) products, alleged to be infringed by Samsung’s HBM chips used in AI accelerator and GPU systems sold by NVIDIA, Google, and Broadcom.
• U.S. Patent No. 12,650,937 — covering DDR5 RDIMM and MRDIMM configurations used in data center server memory modules, alleged to be infringed by Samsung’s DDR5 server memory products incorporated into systems sold by Supermicro and Google.

Netlist seeks a general exclusion order barring importation of all infringing Samsung memory products and downstream devices, as well as cease-and-desist orders against domestic respondents. An evidentiary hearing before an administrative law judge is scheduled for November 2026, with a target date for the Commission’s final determination to follow in 2027.

Key Takeaways

• Two parallel ITC investigations give Netlist substantial leverage. With 337-TA-1510 (six patents) and 337-TA-1511 (two patents) running concurrently, Netlist is pursuing a wide-front ITC strategy. Even a partial win — exclusion on one or two patents — could disrupt Samsung’s U.S. memory shipments significantly.
• HBM and DDR5 memory are critical AI infrastructure. NVIDIA’s H100, H200, and next-generation GPU accelerators depend on Samsung HBM memory. An ITC exclusion order covering HBM products, if sustained after appeal, could create significant supply-chain disruption for AI hardware customers including hyperscalers.
• Respondent list targets the full supply chain. By naming not just Samsung but also Google, NVIDIA, Broadcom, and Supermicro as respondents, Netlist avoids the downstream-products exception and ensures that OEM buyers face the same exclusion risk as the component supplier.
• Section 337 timeline is faster than district court. ITC evidentiary hearings typically conclude within 12–16 months of institution; appellate review at the Federal Circuit follows. Samsung and respondents will need to mount parallel invalidity and non-infringement defenses before both the ITC and in any parallel district court actions.

Why It Matters

The institution of 337-TA-1511 is the latest escalation in Netlist’s multi-front campaign to extract royalties from Samsung and the downstream AI hardware supply chain. Netlist has already obtained significant judgments in district court patent cases against Samsung, and the ITC provides a complementary tool: the threat of an exclusion order that would block Samsung memory products at the border, regardless of the outcome in district court damages proceedings.

For the AI industry, the significance of the HBM patents is particularly acute. High-bandwidth memory is a production bottleneck for AI chips — Samsung, SK Hynix, and Micron are the only viable HBM suppliers — and any exclusion order affecting Samsung’s HBM shipments to U.S. customers would ripple through GPU supply chains for NVIDIA, AMD, and other AI chipmakers. Industry observers will watch whether the ITC investigation creates negotiating pressure sufficient to drive a licensing resolution before the November 2026 evidentiary hearing.