Sandisk Technologies, Inc. et al. vs. Longitude Flash Memory Solutions Ltd. et al.

Explore the PTAB proceeding IPR2025-01281 filed by Sandisk Technologies, Inc. et al. on 2025-09-03. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-01281

Filing Date

2025-09-03

Accorded Filing Date

2025-09-03

Institution Decision Date

—

Last Modified Date

2026-02-20

Proceeding Type

IPR

Termination Date

2026-02-20

Trial Status

Terminated-Settled

Parties & Counsel

Petitioner

Sandisk Technologies, Inc. et al.

Represented By

Batts, Harperet al

Patent Owner / Respondent

Longitude Flash Memory Solutions Ltd. et al.

Represented By

Rubin, Neilet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2800 - Semiconductors, Electrical & Optical Systems

Patent Information

1 Patent Involved

Respondent Application Number 17157350

Respondent Patent Number 11456365

External Links

Espacenet

Google Patents

Respondent Inventor Igor Polishchuk et al

Respondent Tech Center TC 2800 - Semiconductors, Electrical & Optical Systems

Address and Attorney/Agent Information

13 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Kunzler Needham Hilton

Customer Number 36491

Address 50 W. Broadway, Suite 900, Salt Lake City, UT, 84101, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
38527	Brian Kunzler	801-994-4646
48177	Victoria Romney	801-994-4646
52321	Alexis Nelson	801-326-9806
54134	Jason Graff	480-313-6637
54491	Scott Thorpe	801-692-0493
56302	Thomas Briscoe	603-545-0010
56421	Bruce Needham	801-994-4646
58043	Daniel Hopkinson	801-994-4646
60445	Bryan Massey	801-994-4646
66011	Scott Hilton	801-994-4646
68728	Robert Gempeler	801-994-4646
77924	Alandra Adams	435-659-5214
80514	Bryan Pitt	801-994-4646

Proceeding Documents

Termination Decision: Pre-DI settlement TERMINATE

2026-02-20 FILING PARTY: BOARD

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3101

Email Correspondence Exhibit

2026-01-21 FILING PARTY: BOARD

Download

1072

Stipulation of Dismissal in Sandisk Corporation v. IP Value Management, Inc., et al., 5_25-CV-02389-PCP (N.D. Cal.) Exhibit

2026-01-21 FILING PARTY: PETITIONER

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Joint Motion to Dismiss Terminate IPR2025-01281 MOTION

2026-01-21 FILING PARTY: PETITIONER

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1073

Stipulation of Dismissal in IP Value Management, Inc., et al. v. Sandisk Corp., et al., 8_25-CV-00119-MWF(DFMx) (C.D. Cal.) Exhibit

2026-01-21 FILING PARTY: PETITIONER

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Sandisk Technologies, Inc. et al. vs. Longitude Flash Memory Solutions Ltd. et al.

Proceeding Overview

Parties & Counsel

Petitioner

Sandisk Technologies, Inc. et al.

Represented By

Patent Owner / Respondent

Longitude Flash Memory Solutions Ltd. et al.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Termination Decision: Pre-DI settlement TERMINATE

Email Correspondence Exhibit

Stipulation of Dismissal in Sandisk Corporation v. IP Value Management, Inc., et al., 5_25-CV-02389-PCP (N.D. Cal.) Exhibit

Joint Motion to Dismiss Terminate IPR2025-01281 MOTION

Stipulation of Dismissal in IP Value Management, Inc., et al. v. Sandisk Corp., et al., 8_25-CV-00119-MWF(DFMx) (C.D. Cal.) Exhibit

IPR2025-01281 - Joint Request to Treat Settlement as Business Confidential MOTION

Director Discretionary Decision: Refer RESPONSE

Patent Owner's Amended Power of Attorney NOTICE

Judge P. Casey Pitts Standing Order for Civil Trials Exhibit

Petitioner's Opposition to Request for Discretionary Denial RESPONSE

U.S. Patent No. 9,929,240 Exhibit

U.S. Patent No. 8,633,537 Exhibit

Median time-to-trial statistics for the U.S. District Court for the Northern District of California Exhibit

IPValue’s and Longitude Flash Memory Solutions’ Disclosure of Asserted Claims and Infringement Contentions in Sandisk Corp. v. IPValue Management, Inc., et al., 25-cv-02389 (N.D. Cal.) Exhibit

Exhibit D: P.R. 3-1(B) Chart for U.S. Patent No. 11,456,365 Exhibit

Pretrial Order in Entangled Media, LLC v. Dropbox Inc., 23-cv-03264 (N.D. Cal. Sept. 15, 2025) Exhibit

Plaintiff’s Stipulation Regarding Invalidity Contentions filed October 29, 2025, in Sandisk Corp. v. IPValue Management, Inc., et al., 25-cv-02389 (N.D. Cal.) Exhibit

PATENT OWNER’S PRELIMINARY RESPONSE POPR

Pretrial Order in Kawasaki Jukogyo Kabushiki Kaisha v. Rorze Corp., 22-cv-04947 (N.D. Cal. May 20, 2025) Exhibit

Motion to Stay Pending IPR Grant Rates, Docket Navigator, last visited December 16, 2025 Exhibit

Order Denying Motion to Dismiss, Sandisk Corp. v. IPValue Management, Inc., et al., 5:25-cv-02389 (N.D. Cal.), Oct. 7, 2025 Exhibit

PATENT OWNER’S REQUEST FOR DISCRETIONARY DENIAL OF INSTITUTION RESPONSE

Order, Sandisk Corp. v. IPValue Management, Inc., et al., 5:25-cv-02389 (N.D. Cal.), Oct. 20, 2025 Exhibit

Invalidity Contentions, Sandisk Corp. v. IPValue Management, Inc., et al., 5:25-cv-02389 (N.D. Cal.), Nov. 14, 2025 Exhibit

Order on Discovery Dispute, Sandisk Corp. v. IPValue Management, Inc., et al., 5:25-cv-02389 (N.D. Cal.), Sept. 29, 2025 Exhibit

Case Management Order, Sandisk Corp. v. IPValue Management, Inc., et al., 5:25-cv-02389 (N.D. Cal.), Sept. 2, 2025 Exhibit

Complaint, Sandisk Corp. v. IPValue Management, Inc., et al., 5:25-cv-02389 (N.D. Cal.), March 7, 2025 Exhibit

Petitioner's Updated Mandatory Notices NOTICE

Ex 3001 Exhibit

Petitioner's Notice of Intent to Designate a Provisionally Recognized PTAB Attorney as Back-up Counsel NOTICE

Declaration of Jon DeFosse in Support of Petitioner's Notice of Intent to Designate a Provisionally Recognized PTAB Attorney as Back-up Counsel Exhibit

Notice: Power of Attorney NOTICE

Notice: Mandatory Notice NOTICE

Notice: Notice filing date accorded NOTICE

Sze, Physics of Semiconductor Devices, Third Edition Exhibit

Arreghini, IEEE Transactions on Electron Devices Article Exhibit

Lukasiak and Jakubowski Article, History of Semiconductors Exhibit

IEEE, Declaration of Gordon MacPherson Exhibit

Certified Prosecution File History for the '365 Patent - Part 2 Exhibit

U.S. Patent No. 7,450,423 to Lai et al Exhibit

Declaration of June Ann Munford Exhibit

Certified Prosecution File History for the '365 Patent - Part 1 Exhibit

U.S. Patent Application Publication No. 2010-0019312 A1 to Sekine, et al Exhibit

U.S. Patent Application Publication No. 2006-0255399 A1 to Kim et al Exhibit

U.S. Patent Application Publication No. 2006-0118858 A1 to Jeon, et al Exhibit

Korean Patent Application Publication No. 10-2011-0118961 to Lee, et al Exhibit

U.S. Patent Application Publication No. 2009-0179253 A1 to Levy, et al Exhibit

U.S. Patent Application Publication No. 2012-0299086 A1 to Lee, et al Exhibit

U.S. Patent No. 4,203,158 to Frohman-Bentchkowsky et al. Exhibit

Provisional App. for U.S. Patent Application No. 60/940,160 to Polishchuk Exhibit

U.S. Patent Application Publication No. 2008/0128790 to Jung Exhibit

U.S. Patent Application Publication No. 2006-0065919 A1 to Fujiwara Exhibit

U.S. Patent Application Publication No. 2011-0316064 A1 to Kim, et al Exhibit

U.S. Patent Application Publication No. 2009-0026460 A1 to Ou et al Exhibit

U.S. Patent No. 6,912,163 to Zheng et al Exhibit

U.S. Patent Application Publication No. 2006-0113586 A1 to Wang, et al Exhibit

Prosecution File History for the ’434 patent Exhibit

U.S. Patent Application Publication No. 2010-0157680 A1 to Higuchi, et al Exhibit

U.S. Patent Application Publication No. 2011-0281429 A1 to Ganguly, et al Exhibit

Declaration of Jack C. Lee Exhibit

Lai, A Multi-Layer Stackable Thin-Film Transistor (TFT) NAND-Type Flash Mem Exhibit

Kim, A Comparison of N+ Type and P+ Type Polysilicon Gate, 2007 Article Exhibit

Petition PETITION

U.S. Patent No. 11,456,365 to Polishchuck et al Exhibit

U.S. Patent Application Publication No. 2012-0068247 A1 to Lee, et al Exhibit