Petitioner v. Marlin Semiconductor Ltd

This Inter Partes Review (IPR) involves Marlin Semiconductor Ltd as the Patent Owner, a company identified as a subsidiary of IPValue Management (IPValue), a well-known patent monetization firm (NPE/PAE). Marlin Semiconductor, incorporated in Ireland in 2020, primarily functions as a holding company for intellectual property. It acquired a substantial portfolio of over 800 worldwide patents, with additional acquisitions in October 2023, from United Microelectronics Corporation (UMC), a leading semiconductor foundry. The patents cover various aspects of semiconductor structures, processes, and circuits, applying to technologies in advanced communication, infrastructure, cloud computing, memory, imaging, and processing. This IPR, IPR2026-00061, challenges U.S. Patent No. 8,076,194.

The specific "Petitioner" in IPR2026-00061 is not yet publicly identified in general search results, nor is the patent's technical sketch immediately available from the initial broad searches. However, Marlin Semiconductor has previously asserted patents, including some from its UMC portfolio, in parallel district court litigation and International Trade Commission (ITC) investigations against major technology companies such as Apple, Broadcom, Qualcomm, Lenovo, Motorola, OnePlus, and Taiwan Semiconductor Manufacturing Company Limited (TSMC). These prior assertions alleged infringement through semiconductor devices fabricated using advanced process nodes (e.g., 16nm and smaller) and incorporated into downstream products like smartphones, smartwatches, and tablets. It is highly probable that the IPR is a defensive filing by an entity accused of infringing patent 8,076,194 in a related enforcement action.

This IPR is pending before the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office. The PTAB serves as an administrative forum for challenging the validity of issued patents, offering an alternative to more protracted and costly district court litigation. PTAB proceedings are notable for their unique procedural rules, claim construction standards, and burdens of proof. The case is notable not only due to Marlin Semiconductor's status as an NPE and its extensive semiconductor patent portfolio originating from UMC, but also because of the recent policy changes at the USPTO. In March 2026, the USPTO Director issued guidance directing the PTAB to consider U.S. manufacturing activity of both patent owners and petitioners when deciding whether to institute an IPR, which could significantly impact the outcomes of IPRs, particularly for patent owners without a strong domestic manufacturing footprint. Given Marlin Semiconductor's Irish incorporation and the nature of IPValue's business model, this new policy could become a material factor in the ongoing proceedings.

I'll research the docket and related proceedings. Let me start with several parallel searches.

Important discrepancy emerging: search results indicate IPR2026-00061 was filed by TSMC, not Intel. Let me dig into both the district court dockets and the PTAB record.

Counsel of Record for Marlin Semiconductor Ltd.

Marlin Semiconductor Ltd., as the plaintiff in Marlin Semiconductor Ltd v. Intel Corporation, Case No. 6:25-cv-00994-ADA, in the U.S. District Court for the Western District of Texas, is represented by attorneys from several law firms.

Lead Counsel:

• Name: Michael C. Smith
  • Role: Lead Counsel
  • Firm: Siebman Forrest Burg & Smith, LLP
  • Office Location: Marshall, Texas
  • Experience: Known for extensive experience in patent litigation in the Eastern and Western Districts of Texas.
• Name: Seth D. Reich
  • Role: Lead Counsel
  • Firm: Reichman Jorgensen Lehman & Feldberg LLP
  • Office Location: Silicon Valley, California
  • Experience: Specializes in high-stakes intellectual property and technology litigation.
• Name: Joshua A. Krevitt
  • Role: Lead Counsel
  • Firm: Gibson, Dunn & Crutcher LLP
  • Office Location: New York, New York
  • Experience: Co-chair of Gibson Dunn's Intellectual Property Practice Group, with significant experience in patent and technology litigation.

Additional Counsel:

• Name: J. Mark Mann
  • Role: Of Counsel / Local Counsel
  • Firm: Mann Law PC
  • Office Location: Henderson, Texas
  • Experience: A well-known local counsel in Texas federal courts, particularly for patent cases.
• Name: Daniel L. Scardino
  • Role: Of Counsel
  • Firm: The Scardino Law Firm PLLC
  • Office Location: Austin, Texas
  • Experience: Focuses on intellectual property litigation and appeals.

This information is based on public docket filings for Case No. 6:25-cv-00994-ADA.

Defendant Representatives

Intel Corporation, as the defendant in Marlin Semiconductor Ltd v. Intel Corporation, Case No. 6:25-cv-00994-ADA, in the U.S. District Court for the Western District of Texas, and as the Petitioner in IPR2026-00061, is represented by attorneys from prominent intellectual property litigation firms.

Counsel of Record for Intel Corporation

Lead Counsel:

• Name: William F. Lee
  • Role: Lead Counsel
  • Firm: Wilmer Cutler Pickering Hale and Dorr LLP (WilmerHale)
  • Office Location: Boston, Massachusetts
  • Experience: Co-Managing Partner of WilmerHale, with extensive experience representing major technology companies like Intel in high-stakes patent litigation, including significant victories at the Federal Circuit and district courts, often involving microprocessor and semiconductor technology.
• Name: Joseph J. Mueller
  • Role: Lead Counsel
  • Firm: Wilmer Cutler Pickering Hale and Dorr LLP (WilmerHale)
  • Office Location: Boston, Massachusetts
  • Experience: Partner at WilmerHale, also a key attorney in numerous patent litigation successes for Intel, often working alongside William Lee on complex technology cases.

Additional Counsel:

• Name: Seth R. Shipley
  • Role: Of Counsel / Local Counsel
  • Firm: Fish & Richardson P.C.
  • Office Location: Dallas, Texas
  • Experience: Focuses on patent litigation, with experience in the Western District of Texas. Fish & Richardson is a firm well-known for its extensive IP litigation practice, including a significant number of PTAB cases.
• Name: Brittany Amadi
  • Role: Counsel
  • Firm: Wilmer Cutler Pickering Hale and Dorr LLP (WilmerHale)
  • Office Location: Washington, D.C.
  • Experience: Specializes in intellectual property litigation, including patent infringement and post-grant proceedings.
• Name: Steven Horn
  • Role: Associate
  • Firm: Wilmer Cutler Pickering Hale and Dorr LLP (WilmerHale)
  • Office Location: New York, New York
  • Experience: Involved in complex patent disputes for Intel, contributing to trial and appellate victories.

This information is based on public docket filings for Case No. 6:25-cv-00994-ADA and publicly available firm profiles and case summaries. Intel frequently relies on WilmerHale for its most critical patent disputes, and Fish & Richardson also has a strong reputation in patent litigation, particularly at the PTAB.