Unified Patents v. Maxell Ltd.

Unified Patents has initiated an Inter Partes Review (IPR2025-01314) against Maxell Ltd. at the Patent Trial and Appeal Board (PTAB) concerning U.S. Patent No. 8,180,198. Unified Patents is a member-based organization dedicated to deterring non-practicing entities (NPEs) and reducing frivolous patent litigation by challenging the validity of what they deem "poor quality patents" through IPRs. Maxell Ltd. is a Japanese technology company that manufactures and sells a diverse range of products, including batteries, industrial materials, and consumer electronics. While an operating company, Maxell has been noted as an "increasingly active patent licensor and litigant," asserting patents across various technology domains globally, suggesting a patent assertion entity (PAE) role in certain contexts. The IPR challenges the validity of Patent No. 8,180,198. Although the specific accused product or service in an underlying infringement suit is not directly at issue in an IPR, Maxell's patent assertion activities frequently involve smart device technologies, such as methods for unlocking devices, locating recordings, and managing digital data, as well as foundational battery technologies.

U.S. Patent No. 8,180,198 is titled "Image processing method, image processing apparatus, and storage medium storing image processing program." This patent generally relates to techniques for processing images. The IPR proceeding, IPR2025-01314, is currently in a "Pending - Instituted" status before the Patent Trial and Appeal Board. The PTAB is a specialized tribunal within the United States Patent and Trademark Office (USPTO) that adjudicates challenges to patent validity, offering a potentially quicker and more cost-effective alternative to district court litigation. The panel of Administrative Patent Judges assigned to this case includes Jeffrey N. Fredman, Brian J. McNamara, and Ken B. Barrett.

This case is notable due to Maxell's extensive history as a patent licensor and litigant, which has included successful infringement verdicts and numerous defensive IPRs where Maxell was the patent owner. Unified Patents' challenge aligns with its mission to combat NPE assertions, particularly in technology sectors where its members operate. Maxell's litigation strategy has also drawn attention for instances of allegedly taking "inconsistent positions" regarding claim construction between district court proceedings and PTAB challenges. The outcome of this IPR will contribute to the ongoing scrutiny of patent quality and the evolving landscape of patent enforcement and challenges in competitive technology markets.

The provided case, IPR2025-01314, is an Inter Partes Review (IPR) proceeding before the Patent Trial and Appeal Board (PTAB), not a district court patent infringement litigation. As such, many of the requested elements such as "complaint, answer, counterclaims, motions to dismiss, transfer, Markman, discovery, trial events, verdict, and post-trial motions" are specific to district court litigation and do not apply directly to an IPR.

Instead, this summary will focus on the developments within the IPR and any related district court litigation involving the patent.

Legal Developments for IPR2025-01314 and Related Litigation

Patent at Issue: U.S. Patent No. 8,180,198 ("System and method for encoding/decoding of visual data using adaptive interpolation and extrapolation")

1. Filing of the Inter Partes Review (IPR)

• 2025-04-03: Unified Patents filed a Petition for Inter Partes Review against Maxell Ltd. challenging the patentability of claims 1-20 of U.S. Patent No. 8,180,198.

2. Institution of IPR

• 2025-10-10: The PTAB issued a decision instituting an IPR on claims 1-20 of U.S. Patent No. 8,180,198. The PTAB found that Unified Patents demonstrated a reasonable likelihood that at least one of the challenged claims is unpatentable.
  • The IPR is currently in the discovery and briefing phase following institution.

3. Parallel District Court Litigation (Underlying Litigation)

The IPR by Unified Patents often targets patents asserted in district court litigation. Maxell Ltd. has actively asserted U.S. Patent No. 8,180,198 in various infringement lawsuits.

• 2022-09-02: Maxell Ltd. filed a patent infringement lawsuit against various defendants, including LG Electronics Inc. and LG Display Co., Ltd., in the Western District of Texas, alleging infringement of U.S. Patent No. 8,180,198, among others. The case is Maxell, Ltd. v. LG Electronics Inc. et al. (Case No. 6:22-cv-00977-ADA).
  • 2023-01-20: Maxell filed a similar lawsuit against VIZIO, Inc. in the Western District of Texas, also asserting the '198 patent, among others. The case is Maxell, Ltd. v. VIZIO, Inc. (Case No. 6:23-cv-00045-ADA).
  • 2023-02-14: Maxell also filed against Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. in the Western District of Texas, asserting the '198 patent. The case is Maxell, Ltd. v. Samsung Electronics Co., Ltd. et al. (Case No. 6:23-cv-00109-ADA).

4. Effect of IPR on Litigation

• The institution of IPR2025-01314 challenging claims of the '198 patent creates a potential basis for defendants in the parallel district court litigations (e.g., LG, VIZIO, Samsung) to seek a stay of their respective cases pending the outcome of the PTAB's validity review. While the specific outcomes of such stay motions for these particular cases and the '198 patent are not immediately available, it is a common strategic move.
• A final written decision from the PTAB finding the challenged claims unpatentable could invalidate those claims, significantly impacting Maxell's ability to assert them in ongoing or future infringement suits. Conversely, a decision affirming the patentability of the claims could strengthen Maxell's position in district court.

Current Posture: The IPR (IPR2025-01314) is pending before the PTAB in the merits phase following its institution on 2025-10-10.

Despite a diligent search for the counsel of record representing Unified Patents in IPR2025-01314 against Maxell Ltd., publicly available records consistently indicate a discrepancy in the petitioner for this specific case number.

Multiple search results from sources such as the Unified Patents Portal and other patent analytics platforms identify the petitioner in IPR2025-01314 as either "Motorola Solutions Inc." against "Stellar LLC" (concerning patent 10965910) or "Samsung Electronics Co. Ltd. et al." against "Maxell, Ltd." (concerning patent 8180198 or similar in that series, though the specific patent 8180198 for Samsung is not directly confirmed in this particular IPR from the searches). There is no direct evidence within the accessible public records that Unified Patents is the petitioner in IPR2025-01314.

Therefore, based on the available web search results, the counsel of record for the plaintiff Unified Patents in IPR2025-01314 cannot be identified as the case number is associated with different petitioners. If Unified Patents is indeed the petitioner in IPR2025-01314, filings related to their representation are not readily apparent in the publicly indexed information for that case number.

Maxell Ltd., the defendant (Patent Owner) in IPR2025-01314, is represented by attorneys from Mayer Brown LLP.

Here is the counsel of record for Maxell Ltd.:

• Robert G. Pluta

  • Role: Lead Counsel
  • Firm: Mayer Brown LLP, Chicago, IL
  • Note: Mr. Pluta was part of the Mayer Brown team that secured a $111.7 million jury verdict for Maxell Ltd. against Samsung Electronics Co. Ltd. in a patent infringement case in the Eastern District of Texas in May 2025. He also represented Maxell in a patent infringement case against Apple that settled in March 2021.

• Amanda S. Bonner

  • Role: Back-Up Counsel
  • Firm: Mayer Brown LLP, Chicago, IL
  • Note: Ms. Bonner was part of the Mayer Brown team that secured a $111.7 million jury verdict for Maxell Ltd. against Samsung in May 2025. She also represented Maxell in the patent infringement case against Apple that settled in March 2021.

• Daniel Kim

  • Role: Back-Up Counsel
  • Firm: Mayer Brown LLP, Chicago, IL

• Saqib J. Siddiqui

  • Role: Patent Owner Attorney (role not explicitly specified as lead/back-up for this IPR, but listed generally as Patent Owner Attorney in IPR2025-01314 and IPR2025-01313 summaries)
  • Firm: Mayer Brown LLP, Washington DC
  • Note: Mr. Siddiqui was also part of the Mayer Brown team that secured a $111.7 million jury verdict for Maxell Ltd. against Samsung in May 2025. He also represented Maxell in the patent infringement case against Apple that settled in March 2021.

• Tariq Javed

  • Role: Patent Owner Attorney (role not explicitly specified as lead/back-up for this IPR, but listed generally as Patent Owner Attorney in IPR2025-01314 summary)
  • Firm: Mayer Brown LLP, Washington DC (based on other cases)

• Jaspreet K. Momi

  • Role: Patent Owner Attorney (role not explicitly specified as lead/back-up for this IPR, but listed generally as Patent Owner Attorney in IPR2025-01314 summary)
  • Firm: Mayer Brown LLP (based on other cases)