Western Digital Technologies, Inc. vs. LONGITUDE LICENSING LTD.,

Explore the PTAB proceeding IPR2023-01286 filed by Western Digital Technologies, Inc. on 2023-08-08. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2023-01286

Filing Date

2023-08-08

Accorded Filing Date

2023-08-08

Institution Decision Date

2024-02-21

Last Modified Date

2025-04-28

Proceeding Type

IPR

Termination Date

2025-02-19

Trial Status

Final Written Decision

Parties & Counsel

Petitioner

Western Digital Technologies, Inc.

Represented By

O'Dell, Davidet al

Patent Owner / Respondent

LONGITUDE LICENSING LTD.,

Represented By

Milkey, Jameset 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 11798773

Respondent Patent Number RE43539

External Links

Espacenet

Google Patents

Respondent Inventor Tsugio Takahashi

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

Power of Attorney - '539 - Sandisk NOTICE

2025-03-11 FILING PARTY: PETITIONER

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Petitioners' Updated Mandatory Notices NOTICE

2025-03-11 FILING PARTY: PETITIONER

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3001

E-mail authorizing update to mandatory notices Exhibit

2025-03-06 FILING PARTY: BOARD

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Determining Challenged Claim Unpatentable 35 U.S.C. § 318(a) FINAL

2025-02-19 FILING PARTY: BOARD

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Other: Hearing transcript OTHER

2024-12-16 FILING PARTY: BOARD

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Western Digital Technologies, Inc. vs. LONGITUDE LICENSING LTD.,

Proceeding Overview

Parties & Counsel

Petitioner

Western Digital Technologies, Inc.

Represented By

Patent Owner / Respondent

LONGITUDE LICENSING LTD.,

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Power of Attorney - '539 - Sandisk NOTICE

Petitioners' Updated Mandatory Notices NOTICE

E-mail authorizing update to mandatory notices Exhibit

Determining Challenged Claim Unpatentable 35 U.S.C. § 318(a) FINAL

Other: Hearing transcript OTHER

Petitioner's Updated Exhibit List NOTICE

EX1021 - Petitioner's Oral Argument Demonstratives Exhibit

Patent Owner's Updated Exhibit List NOTICE

Exhibit 2007 Exhibit

LEAP Practitioner Request and Verification Form (Petitioner) NOTICE

Order: Hearing Order ORDER

Patent Owner's Request for Oral Argument NOTICE

Petitioner's Request for Oral Argument OTHER

Patent Owner's Sur-Reply OTHER

JOINT STIPULATION TO MODIFY DUE DATE 3 OTHER

U.S. Patent No. 6,198,307 to Garlepp et. al (“Garlepp”) Exhibit

Texas Instruments, Technical Reference Manual - Power MOSFET Gate Driver Bias Optimization, April 2020 Exhibit

Bruce Jacob deposition transcript, August 20, 2024 (“Jacob Deposition”) Exhibit

Petitioner's Reply REPLYTOOPP

Petitioner's Notice of Deposition for Dr. Bruce L. Jacob NOTICE

Patent Owner's Response RESPONSE

Ex. 2006 - Thompson Deposition Exhibit

Ex. 2005 - Jacob Declaration Exhibit

Petitioner's Updated Mandatory Notices NOTICE

JOINT STIPULATION TO FURTHER MODIFY DUE DATES 1 AND 2 AND MODIFY DUE DATE 3 OTHER

PATENT OWNER’S NOTICE OF DEPOSITION OF SCOTT E. THOMPSON, PH.D. NOTICE

JOINT STIPULATION TO MODIFY DUE DATES 1 AND 2 OTHER

ORDER Granting Patent Owner’s Motions for Pro Hac Vice Admission of Brian D. Ledahl and Paul A. Kroeger 37 C.F.R. § 42.10(c) ORDER

PATENT OWNER’S MOTION FOR PRO HAC VICE ADMISSION OF BRIAN D. LEDAHL MOTION

PATENT OWNER’S MOTION FOR PRO HAC VICE ADMISSION OF PAUL A. KROEGER MOTION

DECLARATION OF BRIAN D. LEDAHL IN SUPPORT OF MOTION FOR PRO HAC VICE ADMISSION Exhibit

DECLARATION OF PAUL A. KROEGER IN SUPPORT OF MOTION FOR PRO HAC VICE ADMISSION Exhibit

PATENT OWNER'S UPDATED POWER OF ATTORNEY NOTICE

PATENT OWNER'S UPDATED MANDATORY NOTICE NOTICE

Institution Decision: DECISION Granting Institution of Inter Partes Review 35 U.S.C. § 314 DECISION

Order: SCHEDULING ORDER ORDER

Patent Owner's Updated Exhibit List NOTICE

Ex. 2002 - Disclaimer Exhibit

EX1017-Longitude Preliminary Infringement Contentions, Exhibit B-539 Patent Exhibit

Petitioner's Updated Exhibit List NOTICE

PATENT OWNER'S PRELIMINARY RESPONSE POPR

Exhibit 2001 Exhibit

Notice: NOTICE OF FILING DATE ACCORDED TO PETITION AND TIME FOR FILING PATENT OWNER PRELIMINARY RESPONSE NOTICE

Notice : Mandatory Notice NOTICE

Notice : Power of Attorney NOTICE

EX1002 - Reissue App File History of the ’539 patent (“’773 Reissue App”) Exhibit

EX1007 - U.S. Patent No. 3,943,551 to Skorup (“Skorup”) Exhibit

EX1009 - U.S. Patent No. 3,356,858 to Wanlass (“Wanlass”) Exhibit

EX1005 - Prosecution File History of Original Patent of ’539 patent(“’059 A Exhibit

EX1006 - U.S. Patent No. 6,924,669 to Itoh et al. (“Itoh”) Exhibit

EX1004 - CV _ Scott E. Thompson Exhibit

EX1012 - Order Granting Western Digital’s Mt to Intervene(Amazon)(05-16-23) Exhibit

EX1014 - U.S. Patent No. 5,194,765 to Dunlop et. al (“Dunlop”) Exhibit

EX1013 - Director Vidal Memo re Interim Procedure for Discretionary Denial Exhibit

EX1011 - Order Granting Motion to Stay (Lenovo) (05-16-23) Exhibit

EX1008 - U.S. Patent No. 4,975,598 to Borkar (“Borkar”) Exhibit

Petitioner's Power of Attorney - Western Digital NOTICE

EX1010 - U.S. Patent No. 6,288,563 to Muljono et al. (“Muljono”) Exhibit

Petition for Inter Partes Review ('539 Patent) PETITION

EX1001 - U.S. Patent No. RE43,539 to Takahashi (“’539 patent”) Exhibit

EX1015 - U.S. Patent No. 4,612,466 to Stewart (“Stewart”) Exhibit

EX1016 - Dabral et al., Basic ESD and IO Design (1998) (“Dabral”) Exhibit

EX1003 - Declaration of Scott Thompson (Longitude '539 Patent) Exhibit