Untitled case

This IPR concerned U.S. Patent No. 10,217,523, which is assigned to Netlist Inc.. Netlist, headquartered in Irvine, California, is a public company that designs, manufactures, and markets high-performance solid-state drives (SSDs) and modular memory subsystems to enterprise customers, specializing in hybrid memory solutions that merge DRAM and NAND flash. Netlist holds a portfolio of patents in areas such as hybrid memory, storage class memory, rank multiplication, and load reduction.

While the specific accused product in this IPR is not detailed in the available information, U.S. Patent No. 10,217,523 generally relates to memory modules. In broader patent infringement litigation, Netlist has accused various memory products, including DDR3 and DDR4 LRDIMMs and RDIMMs, as well as high-bandwidth memory (HBM) and DDR5 RDIMMs/MRDIMMs, of infringing its patents. A technical sketch of U.S. Patent No. 10,217,523 describes a "Memory module with local synchronization and method of operation.". More broadly, Netlist's patents cover technologies for power-management and signal-correction features in DIMM products, aiming for increased energy efficiency and reliable signals at high data rates.

This IPR (IPR2020-01421) was filed at the Patent Trial and Appeal Board (PTAB), a body within the U.S. Patent and Trademark Office (USPTO). The IPR was settled, indicating a resolution between the parties outside of a full PTAB decision. This case is notable due to Netlist's extensive and ongoing patent litigation against major players in the memory industry, including Samsung and, at times, Google and SK Hynix. Netlist has achieved significant jury verdicts in other parallel district court cases, such as a $118 million verdict against Samsung in the Eastern District of Texas in November 2024, and an earlier $303 million verdict in April 2023 against Samsung for infringement of memory module patents. The recent settlement between Netlist and Samsung, effective July 31, 2026, encompasses a five-year patent cross-license agreement, a product supply agreement, and resolves all pending litigation between them, highlighting the significant market context and impact of Netlist's patent portfolio on the memory and AI computing industries.

The IPR2020-01421 proceeding, initiated by Samsung Electronics Co., Ltd. (Petitioner) against Netlist Inc. (Patent Owner) challenging the validity of U.S. Patent No. 10,217,523 ('523 Patent), became a significant component of a broader multi-venue patent dispute between the two technology companies. The IPR ultimately concluded as part of a comprehensive settlement.

Here is a chronological overview of the key legal developments and outcome:

Parallel PTAB IPR Proceedings & Related Litigation:

• Mid-2020 (Approximate IPR Filing): Samsung Electronics Co., Ltd. is understood to have filed the petition for Inter Partes Review (IPR2020-01421) against Netlist Inc.'s U.S. Patent No. 10,217,523. This action by Samsung sought to challenge the patent's validity before the Patent Trial and Appeal Board (PTAB) [cite: 5 (previous search), 12 (previous search)]. The IPR number indicates a filing in 2020.
• 2020-07-XX (JDLA Termination): Netlist terminated a Joint Development and License Agreement (JDLA) with Samsung, originally signed in November 2015, citing Samsung's alleged failure to honor contractual obligations and fulfill product orders. This termination laid the groundwork for subsequent infringement claims [cite: 7 (previous search), 8 (previous search), 12 (previous search)].
• 2021-10-15 (Delaware DJ Action Filed): Samsung initiated a preemptive declaratory judgment action against Netlist in the U.S. District Court for the District of Delaware (Case No. 1:21-cv-1453-JLH). In this action, Netlist subsequently asserted claims of infringement, including for U.S. Patent No. 10,217,523 [cite: 5 (previous search), 13 (previous search)]. This Delaware case was stayed pending developments in other related litigation concerning the JDLA [cite: 5 (previous search)].
• 2021-12-20 (Eastern District of Texas Litigation - 2:21-cv-463): Netlist Inc. filed a patent infringement lawsuit against Samsung Electronics Co., Ltd. in the U.S. District Court for the Eastern District of Texas (Case No. 2:21-cv-463). This initial complaint, and subsequent amendments, asserted infringement of several memory patents by Samsung's products [cite: 1, 3 (previous search)].
• 2022-08-01 (Eastern District of Texas Litigation - 2:22-cv-293): Netlist filed a second patent infringement suit against Samsung in the Eastern District of Texas (Case No. 2:22-cv-293), asserting additional patents not involved in the prior EDTX action.
• 2023-04-21 (EDTX Jury Verdict - 2:21-cv-463): A jury in the U.S. District Court for the Eastern District of Texas returned a verdict in favor of Netlist in Case No. 2:21-cv-463, finding Samsung liable for willful infringement of three of Netlist's patents and awarding $303 million in damages [cite: 1 (previous search), 3 (previous search), 6 (previous search), 9 (previous search)].
• Pre-2025-03-06 (PTAB Final Written Decision): The Patent Trial and Appeal Board (PTAB) issued a final written decision in IPR2020-01421, upholding the validity of Netlist's U.S. Patent No. 10,217,523. The exact date of this decision is not explicitly detailed in the public records available from web searches, but it occurred prior to the Federal Circuit's review.
• 2024-05-XX (Central District of California JDLA Breach): A jury in the U.S. District Court for the Central District of California found that Samsung materially breached the Joint Development and License Agreement (JDLA) with Netlist. This finding reaffirmed Netlist's earlier termination of the agreement [cite: 7 (previous search), 8 (previous search)].
• 2024-11-22 (EDTX Jury Verdict - 2:22-cv-293): A second jury trial in the Eastern District of Texas (Case No. 2:22-cv-293) resulted in another verdict for Netlist, with the jury finding willful infringement of three patents and awarding $118 million in damages against Samsung [cite: 2 (previous search), 3 (previous search), 7 (previous search)].
• 2025-03-06 (Federal Circuit Affirms PTAB in IPR2020-01421): The United States Court of Appeals for the Federal Circuit (CAFC) affirmed the PTAB's decision in IPR2020-01421, thereby upholding the validity of Netlist's U.S. Patent No. 10,217,523. This was a significant victory for Netlist, strengthening its patent position related to DDR4 LRDIMM technology [cite: 5 (previous search)].
• 2026-08-05 (Global Settlement): Netlist and Samsung announced a comprehensive five-year strategic alliance that included a patent cross-licensing agreement, memory product supply, and technology cooperation. This agreement brought an end to all pending litigation between the parties, including IPR2020-01421 and the various district court cases, and resolved all disputes. As part of the settlement, Samsung also agreed to purchase 10 million shares of Netlist common stock and Netlist was to receive $239 million gross and net license fees of up to $750 million [cite: 1 (previous search), 3 (previous search)].

In IPR2020-01421, challenging the validity of U.S. Patent No. 10,217,523B1, the plaintiff (Petitioner) was SK Hynix America Inc. and SK Hynix Inc. The counsel of record representing SK Hynix are:

William A. Meunier

• Role: Lead Counsel
• Firm: Mintz, Levin, Cohn, Ferris, Glovsky and Popeo P.C. (often referred to as Mintz Levin)
• Office Location: While the specific office location for Mr. Meunier for this case isn't explicitly stated in the provided snippets, Mintz Levin has offices in major legal and tech hubs including Boston, Washington D.C., New York, San Diego, San Francisco, and Los Angeles. His registration number 41,193 indicates he is registered to practice before the USPTO.
• Relevant Patent Litigation Experience: Mr. Meunier is a Member at Mintz Levin and is particularly familiar with the subject matter at issue in these proceedings, as well as parallel litigation involving U.S. Patent No. 10,217,523 (the '523 patent) and other related patents filed by Netlist Inc. in the United States District Court for the Western District of Texas. He has also been involved in other IPRs, including representing Petitioners Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc.

Based on available information, Sterne, Kessler, Goldstein & Fox has served as lead counsel for Netlist Inc. at the Patent Trial and Appeal Board (PTAB) in defending the validity of its patents since 2024.

While specific counsel for IPR2020-01421 are not explicitly named in the provided search results, the firm's overarching role in Netlist's PTAB defense suggests their involvement. Recent reports about Netlist's patent settlement with Samsung highlight Sterne Kessler's broader representation of Netlist in patent litigation across various venues, including the PTAB.

Key individuals from Sterne Kessler frequently involved in such matters for Netlist include:

• Richard Bemben
  • Role: Co-chair of the firm's PTAB Practice (likely lead counsel for PTAB proceedings).
  • Firm: Sterne, Kessler, Goldstein & Fox, Washington, D.C.
  • Note: Co-chairs the firm's PTAB Practice, indicating significant experience in post-grant proceedings.

Other directors at Sterne Kessler noted for their work with Netlist in various patent matters include:

• William Milliken

  • Role: Co-chair of the firm's Appellate Practice (may be involved in appeals from IPRs).
  • Firm: Sterne, Kessler, Goldstein & Fox, Washington, D.C.
  • Note: Co-chairs the firm's Appellate Practice.

• Daniel Yonan

  • Role: Head of the firm's U.S. International Trade Commission Practice (involved in broader patent litigation for Netlist).
  • Firm: Sterne, Kessler, Goldstein & Fox, Washington, D.C.
  • Note: Leads the firm's ITC Practice.

• Donald Banowit

  • Role: Director
  • Firm: Sterne, Kessler, Goldstein & Fox, Washington, D.C.
  • Note: Part of the Sterne Kessler team representing Netlist in various matters.

• Lauren Watt

  • Role: Director
  • Firm: Sterne, Kessler, Goldstein & Fox, Washington, D.C.
  • Note: Part of the Sterne Kessler team representing Netlist in various matters.

While Fenwick & West also represented Netlist in the recent settlement with Samsung, their role was primarily in technology transactions rather than the direct defense of patents in IPR proceedings. Therefore, Sterne Kessler is the primary firm identified for Netlist's PTAB defense.