Samsung Electronics Co. Ltd. et al. vs. Maxell, LTD.

Explore the PTAB proceeding IPR2025-01311 filed by Samsung Electronics Co. Ltd. et al. on 2025-09-05. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-01311

Filing Date

2025-09-05

Accorded Filing Date

2025-09-05

Institution Decision Date

2026-03-03

Last Modified Date

2026-08-18

Proceeding Type

IPR

Termination Date

—

Trial Status

Trial Instituted

Parties & Counsel

Petitioner

Samsung Electronics Co. Ltd. et al.

Represented By

Tamburo, Salvatoreet al

Patent Owner / Respondent

Maxell, LTD.

Represented By

Pluta, Robertet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2400 - Computer Networks, Multiplex & Cybersecurity

Patent Information

1 Patent Involved

Respondent Application Number 17868139

Respondent Patent Number 11812091

External Links

Espacenet

Google Patents

Respondent Inventor Yoshihiro MACHIDA et al

Respondent Tech Center TC 2400 - Computer Networks, Multiplex & Cybersecurity

Address and Attorney/Agent Information

5 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name MATTINGLY & MALUR, PC

Customer Number 24956

Address 1800 DIAGONAL ROAD, SUITE 600, ALEXANDRIA, VA, 22314, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
26600	Douglas Hanscom	703-684-1120
30293	John Mattingly	703-684-1120
34663	Shrinath Malur	703-684-1120
35061	Colin Barnitz	703-684-1120
62484	Nicholas Mattingly	703-684-1120

Proceeding Documents

1049

Deposition Transcript of Karansher Singh Exhibit

2026-08-18 FILING PARTY: PETITIONER

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PETITIONERS’ REPLY TO PATENT OWNER’S RESPONSE REPLYTOOPP

2026-08-18 FILING PARTY: PETITIONER

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PETITIONERS’NOTICE OF CROSS-EXAMINATION OF DR. SINGH NOTICE

2026-06-30 FILING PARTY: PETITIONER

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2022

CBS News, “Feature Fatigue Hits Gadget Users” Exhibit

2026-05-29 FILING PARTY: PATENT OWNER

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2023

Transcript of Deposition of Dr. Benjamin B. Bederson Exhibit

2026-05-29 FILING PARTY: PATENT OWNER

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Samsung Electronics Co. Ltd. et al. vs. Maxell, LTD.

Proceeding Overview

Parties & Counsel

Petitioner

Samsung Electronics Co. Ltd. et al.

Represented By

Patent Owner / Respondent

Maxell, LTD.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Deposition Transcript of Karansher Singh Exhibit

PETITIONERS’ REPLY TO PATENT OWNER’S RESPONSE REPLYTOOPP

PETITIONERS’NOTICE OF CROSS-EXAMINATION OF DR. SINGH NOTICE

CBS News, “Feature Fatigue Hits Gadget Users” Exhibit

Transcript of Deposition of Dr. Benjamin B. Bederson Exhibit

Client/Server Software Architectures—An Overview, Software Engineering Institute, Carnegie Mellon University Exhibit

Patent Owner Response RESPONSE

Curriculum Vitae of Karansher Singh Exhibit

Declaration of Karansher Singh in Support of Patent Owner’s Response Exhibit

Patent Owner's Updated Power of Attorney NOTICE

Patent Owner's Updated Mandatory Notices Under 37 C.F.R. § 42.8 NOTICE

ORDER Conditionally Granting Patent Owner’s Motions for Pro Hac Vice Admission of Tariq Javed 37 C.F.R. § 42.10 ORDER

Patent Owner's Unopposed Motion for Pro Hac Vice Admission of Tariq Javed MOTION

Ex. 2018 - Declaration of T. Javed Exhibit

Patent Owner's Notice of Cross-Examination of Benjamin B. Bederson NOTICE

SCHEDULING ORDER ORDER

Institution Decision: Grant DECISION

Ex. 2017 - Defendants' PR 4-2 Disclosures Exhibit

Patent Owner's Preliminary Sur-Reply in Response to Petition for Inter Partes Review of U.S. Patent No. 11,812,091 OTHER

PETITIONERS’ PRELIMINARY REPLY TO PATENT OWNER’S PRELIMINARY RESPONSE OTHER

EX1048 Max Infringmt Conts-Appx 5 (11,812,091) Exhibit

EX1047 2025-10-20 Appx 5 (11,812,091)_REDLINE Exhibit

E-mail authorizing preliminary reply and sur-reply Exhibit

Director Discretionary Decision: Refer RESPONSE

Order - Sept. 18, 2025 Exhibit

Paper 40 (Pet’s Response POs Req) Exhibit

Paper 33 (Order Denying PO’s Req) Exhibit

Order Focusing Patent Claims and Prior Art Exhibit

Order - May 2, 2025 Exhibit

Patent Owner’s infringement contentions Exhibit

Order - Jul. 9, 2025 Exhibit

Order - Mar. 21, 2025 Exhibit

Letter from Maxell to Samsung (July 7, 2021) Exhibit

Paper 42 (Pet’s Resp to POs MTS) Exhibit

Complaint - No. 5:23-cv-00092 Exhibit

Ltr from Maxell to Samsung (December 29, 2021) Exhibit

Paper 50 (Order Denying POs MTS) Exhibit

Order on Samsung’s Motion to Stay Exhibit

Petitioner’s Motion to Stay Pending Exhibit

Paper 41 (Petitioner’s Opposition) Exhibit

Paper 47 (Petitioner’s Sur-reply) Exhibit

PETITIONERS’ OPPOSITION TO PATENT OWNER’S REQUEST FOR DISCRETIONARY DENIAL RESPONSE

Ex. 2016 Exhibit

Patent Owner's Preliminary Response to Petition for Inter Partes Review of U.S. Patent No. 11,812,091 POPR

CORRECTED CHART OF CLAIMS OTHER

Ex. 3001 Exhibit

Order: Other ORDER

Law360 Article, “Maxell Settles Patent Suit Against Apple Over Mobile Tech” Exhibit

Petitioner’s Invalidity Contentions and Disclosures Exhibit

Jury Trial Transcript, Vol. 4, Maxell, Ltd. v. Samsung Elecs. Co., Ltd., No. 5:23-cv-00092-RWS (E.D. Tex.) Exhibit

Notice Letter to Samsung (July 7, 2021) Exhibit

Law360 Article, “Maxell Scores $43M EDTX Jury Win In ZTE Patent Trial” Exhibit

Brief in Support of Patent Owner's Request for Discretionary Denial RESPONSE

Complaint, Maxell, Ltd. v. Samsung Elecs. Co., Ltd., No. 5:25-cv-00052-RWS (E.D. Tex.) Exhibit

Follow-up Notice Letter to Samsung (November 28, 2024) Exhibit

Motion for Partial Summary Judgment of Validity Based on Sotera Stipulations, Maxell, Ltd. v. Samsung Elecs. Co., Ltd., No. 5:23-cv-00092-RWS (E.D. Tex.) Exhibit

Law360 Article, “Maxell, Huawei Reach Terms To End Smartphone Patent Suit” Exhibit

Hudson Institute Article, “Google’s Loss to Sonos Settles It, Big Tech Has an IP Piracy Problem” Exhibit

Docket Navigator Time to Trial Statistics for the Eastern District of Texas Exhibit

Docket Control Order, Maxell, Ltd. v. Samsung Elecs. Co., Ltd., No. 5:25-cv-00052-RWS (E.D. Tex.) Exhibit

Follow-up Notice Letter to Samsung (December 29, 2021) Exhibit

PatentRenewal.com Article, “which-companies-hold-the-most-patents-in-the-world” Exhibit

Follow-up Notice Letter to Samsung (April 21, 2025) Exhibit

PETITIONERS’ UPDATED EXHIBIT LIST OTHER

PETITIONERS’ STIPULATION Exhibit