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

Explore the PTAB proceeding IPR2025-01312 filed by Samsung Electronics Co. Ltd. et al. on 2025-08-29. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-01312

Filing Date

2025-08-29

Accorded Filing Date

2025-08-29

Institution Decision Date

2026-02-10

Last Modified Date

2026-08-26

Proceeding Type

IPR

Termination Date

—

Trial Status

Trial Instituted

Parties & Counsel

Petitioner

Samsung Electronics Co. Ltd. et al.

Represented By

Buergi, Robertet al

Patent Owner / Respondent

Maxell, Ltd.

Represented By

KELLY, SCOTTet 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 11602956

Respondent Patent Number 7952645

External Links

Espacenet

Google Patents

Respondent Inventor Kozo Masuda et al

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

Address and Attorney/Agent Information

8 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name ANTONELLI, TERRY, STOUT & KRAUS, LLP

Customer Number 20457

Address PO Box 472, Upper Marlboro, MD, 20773, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
18038	George Spencer	703-893-7131
26422	Donald Stout	202-419-7021
28141	Gregory Montone	703-677-3020
28565	William Solomon	202-419-7000
28577	Ronald Shore	703-836-6400
32087	Alan Schiavelli	202-419-7000
32173	Paul Skwierawski	919-636-4767
60190	James Zak	651-357-8517

Proceeding Documents

107

PRELIMINARY GUIDANCE PATENT OWNER’S MOTION TO AMEND 37 C.F.R. § 42.121(e) ORDER

2026-08-26 FILING PARTY: BOARD

Download

PATENT OWNER’S NOTICE OF CROSS-EXAMINATION OF DR. SCHONFELD NOTICE

2026-08-17 FILING PARTY: PATENT OWNER

Download

Petitioner's Opposition to Patent Owner's Contingent Motion to Amend OPPOSITION

2026-08-04 FILING PARTY: PETITIONER

Download

1044

Definition of “when”from Webster’s New College Dictionary (2005) Exhibit

2026-08-04 FILING PARTY: PETITIONER

Download

1035

Supplemental Declaration of Dr. Dan Schonfeld Regarding Patent Owner’s Motion to Amend Exhibit

2026-08-04 FILING PARTY: PETITIONER

Download

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

PRELIMINARY GUIDANCE PATENT OWNER’S MOTION TO AMEND 37 C.F.R. § 42.121(e) ORDER

PATENT OWNER’S NOTICE OF CROSS-EXAMINATION OF DR. SCHONFELD NOTICE

Petitioner's Opposition to Patent Owner's Contingent Motion to Amend OPPOSITION

Definition of “when”from Webster’s New College Dictionary (2005) Exhibit

Supplemental Declaration of Dr. Dan Schonfeld Regarding Patent Owner’s Motion to Amend Exhibit

Supplemental Declaration of Dr. Dan Schonfeld Regarding Patent Owner’s Response Exhibit

U.S. Patent App. Pub. No. 2006/0258289 (“Dua”) Exhibit

U.S. Patent No. 8,792,039 (“Hirooka”) Exhibit

U.S. Patent No. 8,184,200 (“Biswas”) Exhibit

Joel Johnson, Drive Safe, POPULAR MECHANICS, May 2006 Exhibit

Transcript of deposition of Patent Owner’s expert Dr. Matthew Turk (Jul. 21, 2026) Exhibit

Definition of “pixel”from Dictionary of Computer Vision and Image Processing (2005) Exhibit

Definition of “controller”from Dictionary of ICT (4th ed. 2004) Exhibit

Markus P.J. Fromherz, Model-Based Computing for Design and Control of Reconfigurable Systems, AI MAGAZINE, Winter 2004 Exhibit

Petitioner's Reply to Patent Owner's Response REPLYTOOPP

A.S. Bishell, Designing the Control Architecture for Algorithm Specific Custom Processors on FPGAs, Elecs. N.Z. Conf. (Nov. 2007) Exhibit

Matthew Turk, Perceptual Interfaces, EMERGING TOPICS IN COMPUTER VISION, 2004 Exhibit

Definition of “when”from The New Oxford American Dictionary (2nd ed. 2005) Exhibit

International Organization for Standardization, Digital imaging — Specification guideline for digital cameras, ISO 18383:2025, (2nd ed. 2025) Exhibit

Sony, What is a pixel and how does it form a picture? Exhibit

U.S. Patent No. 6,125,371 (“Bohannon”) Exhibit

U.S. Patent No. 6,148,103 (“Nenonen”) Exhibit

Joint Claim Construction Statement from Maxell, Ltd. v. Samsung Elecs. Co., No. 5:25-cv-00052 (E.D. Tex. Jan. 28, 2026) Exhibit

Definition of “controller”from Wiley Electrical and Electronics Engineering Dictionary (2004) Exhibit

U.S. Patent No. 8,139,157 (“Someya”) Exhibit

PETITIONER’S NOTICE OF CROSS-EXAMINATION OF DR. TURK OTHER

Panel Change Order ORDER

PATENT OWNER’S TRANSMITTAL OF CORRECTED EX2007 – DECLARATION OF MATTHEW TURK, PH.D. OTHER

Declaration of Matthew Turk, Ph.D. Exhibit

Ex. 3005 Exhibit

PATENT OWNER’S RESPONSE TO PETITION FOR INTER PARTES REVIEW OF U.S. PATENT NO. 7,952,645 RESPONSE

Transcript - Deposition of Dan Schonfeld Exhibit

Declaration of Matthew Turk, Ph.D. Exhibit

PATENT OWNER’S CONTINGENT MOTION TO AMEND MOTION

Notice: Mandatory Notice NOTICE

Notice: Power of Attorney NOTICE

Order: Granting Motion to Withdraw and Substitute Counsel ORDER

Ex. 3004 Exhibit

Patent Owner's Unopposed Motion to Withdraw Counsel MOTION

Joint Stipulation to Modify Due Dates 1, 2, and 3 OTHER

Ex. 3003 Exhibit

Ex. 3002 Exhibit

Patent Owner's Notice of Cross-Examination of Dan Schonfeld NOTICE

Order: Scheduling Order ORDER

Institution Decision: Grant DECISION

Director Discretionary Decision: Refer RESPONSE

EX1019 Exhibit

EX1028 Exhibit

Patent Owner's Preliminary Response to Petition for Inter Partes Review of U.S. Patent No. 7,952,645 POPR

EX1027 Exhibit

EX1033 Exhibit

EX1020 Exhibit

EX1018 Exhibit

EX1034 Exhibit

EX1031 Exhibit

EX1016 Exhibit

EX1024 Exhibit

EX1025 Exhibit

EX1032 Exhibit

EX1029 Exhibit

EX1022 Exhibit

Ex. 2016 Exhibit

EX1030 Exhibit

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

EX1026 Exhibit