Unified Patents v. Mosaid Technologies Inc.

This case, Unified Patents v. Mosaid Technologies Inc. (IPR2025-01456), involves a challenge to patent validity before the Patent Trial and Appeal Board (PTAB). The petitioner, Unified Patents, is a member-based organization dedicated to deterring assertions of low-quality patents by non-practicing entities (NPEs) through various means, including filing inter partes reviews (IPRs) at the PTAB. The patent owner, Mosaid Technologies Inc., is a Canadian intellectual property management company that specializes in licensing and monetizing patents, primarily in semiconductor and wireless technologies, thus operating as a Patent Assertion Entity (PAE) or NPE.

The sole patent at issue is U.S. Patent No. 10,140,028, which is directed to non-volatile memory devices. As an IPR proceeding, there is no "accused product" in the traditional sense of an infringement suit; rather, Unified Patents sought to invalidate this patent. The case was heard at the Patent Trial and Appeal Board, an administrative court within the USPTO, known for providing a potentially faster and more cost-effective avenue for challenging patent validity compared to district court litigation.

The procedural posture of IPR2025-01456 is "Not Instituted - Procedural," meaning the PTAB declined to initiate a full review of the patent's validity based on procedural grounds rather than the merits of patentability. While the specific procedural reason for Unified Patents' petition in this case is not publicly detailed in the provided search results, such denials have become increasingly common at the PTAB due to evolving discretionary denial policies, including heightened scrutiny of claim construction positions across parallel proceedings and real party in interest issues. This case is notable due to Unified Patents' explicit mission to challenge NPEs like Mosaid, which actively engages in patent licensing and enforcement, and the non-institution status highlights the current landscape of procedural hurdles at the PTAB for IPR petitioners.

Key Legal Developments and Outcome for IPR2025-01456

This case, IPR2025-01456, involves Unified Patents as the petitioner challenging patent 10140028, owned by Mosaid Technologies Inc., before the Patent Trial and Appeal Board (PTAB). The case concluded with a "Not Instituted - Procedural" status. It is important to note a discrepancy between the provided case metadata and search results: while the prompt identifies Unified Patents as the petitioner, publicly available PTAB data lists Infineon Technologies Americas Corp. as the petitioner for IPR2025-01456 concerning patent 10140028. Following the operating rules to prioritize the prompt's metadata, this summary proceeds with Unified Patents as the petitioner.

Given the nature of an Inter Partes Review (IPR), many of the categories typically associated with district court patent infringement litigation (e.g., complaint, answer, Markman, discovery, trial, verdict) are not directly applicable. The focus of an IPR is on the patentability of claims challenged through a petition before the PTAB.

Chronological Developments:

• IPR Petition Filing (2025-08-29): Unified Patents filed a petition for Inter Partes Review, IPR2025-01456, challenging U.S. Patent No. 10140028, owned by Mosaid Technologies Inc. (Note: While the prompt states Unified Patents as the petitioner, search results for IPR2025-01456 show Infineon Technologies Americas Corp. as the petitioner with a filing date of August 29, 2025.).
• Decision on Institution - Not Instituted - Procedural (2026-03-17): The PTAB issued a decision declining to institute an IPR for IPR2025-01456, citing "procedural" reasons. The termination date for the proceeding was March 17, 2026.

Outcome:

The IPR was not instituted due to procedural reasons. Without the specific decision document for IPR2025-01456 (with Unified Patents as petitioner), the precise procedural grounds for non-institution are not definitively known from the available public search results, especially considering the discrepancy in the petitioner's identity.

However, in other IPR proceedings, Unified Patents has faced procedural challenges related to the identification of real parties in interest (RPIs). For example, in Unified Patents, LLC v. MemoryWeb, LLC, IPR2021-01413, the PTAB initially determined that Unified Patents should have identified its members (Apple and Samsung in that instance) as RPIs. Although that specific RPI determination was later vacated by the USPTO Director as unnecessary to resolve the proceeding, it highlights a recurring procedural issue that Unified Patents has encountered. Such RPI challenges, or other issues related to statutory time bars or petition completeness, are common "procedural" reasons for the PTAB to decline institution.

No information was found regarding parallel district court litigation or other PTAB proceedings directly impacting or being impacted by this specific IPR, IPR2025-01456, with Unified Patents as the petitioner.

Unified Patents typically relies on its internal legal team, comprising experienced patent attorneys, to prepare and litigate Inter Partes Review (IPR) proceedings before the Patent Trial and Appeal Board (PTAB). While the specific counsel of record for IPR2025-01456 could not be definitively identified through public docket searches for this particular case, Unified Patents' operational model indicates that its Senior Patent Counsel typically handle such matters directly.

Based on publicly available information about Unified Patents' legal team and their roles in PTAB proceedings, the following individuals are likely to serve as counsel for Unified Patents in their IPR challenges:

• Jonathan Stroud

  • Role: Chief IP Counsel
  • Firm: Unified Patents, LLC (Washington, D.C. area is a preferred location for their counsel)
  • Relevant Experience: As Chief IP Counsel, Jonathan Stroud oversees Unified Patents' intellectual property strategies, which include challenging patents before the PTAB. He has participated in discussions regarding reform proposals for improving the quality of issued U.S. patents.

• Jordan Rossen

  • Role: Senior Patent Counsel
  • Firm: Unified Patents, LLC (previously practiced at Ropes & Gray and Paul Hastings in Washington, DC)
  • Relevant Experience: Jordan Rossen prepares and litigates post-grant proceedings before the PTAB for Unified Patents. His prior experience includes eleven years in intellectual property litigation at Ropes & Gray and Paul Hastings, representing clients before the PTAB, International Trade Commission, district courts, and the Federal Circuit, across diverse technology fields.

• David Seastrunk

  • Role: Senior Patent Counsel
  • Firm: Unified Patents, LLC (previously practiced at Finnegan, Henderson, Farabow, Garrett & Dunner, LLP)
  • Relevant Experience: David Seastrunk prepares and litigates post-grant proceedings before the PTAB for Unified Patents. At Finnegan, he was involved in all phases of post-grant proceedings, district court cases, and International Trade Commission investigations, and also practiced patent prosecution and client counseling.

• Michelle Callaghan (formerly Michelle Aspen)

  • Role: Senior Patent Counsel
  • Firm: Unified Patents, LLC (previously practiced at Erise IP)
  • Relevant Experience: Michelle Callaghan prepares and litigates post-grant proceedings before the PTAB for Unified Patents. Her previous work includes defending clients against patent demands in district courts, challenging patents before the PTAB, and preparing opinions on patent validity and infringement. She has also been a speaker on topics like Fintiv denials in PTAB proceedings.

Unified Patents operates as a deterrence entity rather than a traditional law firm representing specific clients, and it independently files post-grant challenges against patents it deems unpatentable or invalid. The organization regularly hires experienced patent attorneys with backgrounds in post-grant proceedings to manage these internal efforts.

Given that the IPR was "Not Instituted - Procedural," it indicates that a petition was filed, but the specific counsel for this particular IPR (IPR2025-01456) has not been explicitly identified in the provided search results. However, the attorneys listed above represent the core of Unified Patents' internal PTAB litigation team.

Mosaid Technologies Inc. is consistently represented by Lowenstein & Weatherwax LLP in its Patent Trial and Appeal Board (PTAB) proceedings, including numerous inter partes reviews (IPRs). While specific counsel for IPR2025-01456 is not explicitly listed in public search results, the firm and several of its attorneys have a strong track record of representing Mosaid in similar IPRs, often achieving non-institution decisions.

Based on their frequent representation of Mosaid Technologies Inc. in PTAB proceedings, the following attorneys from Lowenstein & Weatherwax LLP would likely have been counsel of record:

• Nathan Lowenstein

  • Role: Managing Partner, likely lead counsel.
  • Firm: Lowenstein & Weatherwax LLP, Santa Monica, CA.
  • Note on experience: Co-managing partner of a patent litigation boutique, he is an experienced litigator with a practice heavily focused on patent litigation and PTAB matters, including Federal Circuit appeals. Lowenstein & Weatherwax LLP has been ranked as a top-performing IPR firm for patent owners.

• Dennis J. Courtney

  • Role: Partner, likely counsel.
  • Firm: Lowenstein & Weatherwax LLP, Santa Monica, CA.
  • Note on experience: Has extensive experience in both IPR proceedings and patent litigation in federal district and appellate courts, representing clients in technological areas including semiconductors. He was part of the team that obtained multiple non-institutions for Mosaid Technologies.

• Colette Woo

  • Role: Partner, likely counsel.
  • Firm: Lowenstein & Weatherwax LLP, Santa Monica, CA.
  • Note on experience: Focuses on complex patent disputes, particularly IPR and ex parte reexamination proceedings before the USPTO and related Federal Circuit appeals. She regularly advises clients on PTAB strategy and has been recognized nationally as a top-performing patent owner-side IPR attorney. She was also part of the team that secured non-institutions for Mosaid Technologies.