Western Digital Technologies et al. vs. Godo Kaisha IP Bridge 1

Explore the PTAB proceeding IPR2025-00701 filed by Western Digital Technologies et al. on 2025-03-06. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00701

Filing Date

2025-03-06

Accorded Filing Date

2025-03-06

Institution Decision Date

2025-10-08

Last Modified Date

2025-11-13

Proceeding Type

IPR

Termination Date

2025-10-08

Trial Status

Institution Denied

Parties & Counsel

Petitioner

Western Digital Technologies et al.

Represented By

Armond, Michelleet al

Patent Owner / Respondent

Godo Kaisha IP Bridge 1

Represented By

Hrycyszyn, Geraldet 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 15428842

Respondent Patent Number 10367138

External Links

Espacenet

Google Patents

Respondent Inventor Shinji YUASA

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

Address and Attorney/Agent Information

119 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name WOLF GREENFIELD & SACKS, P.C.

Customer Number 23628

Address 600 ATLANTIC AVENUE, BOSTON, MA, 02210-2206, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
28129	John Welch	617-646-8000
31616	Edward Gates	617-646-8000
31624	Jason Honeyman	617-646-8222
32950	Edmund Walsh	617-646-8000
34681	James Morris	617-646-8000
35986	Randy Pritzker	617-646-8000
36149	Richard Giunta	617-646-8000
36628	Timothy Oyer	617-646-8251
36971	Douglas Wolf	617-646-8260
38232	Robert Maldonado	212-849-3339
39188	Neil Ferraro	617-646-8267
39213	James Hanifin Jr	617-646-8000
39231	Robert Hunt	617-646-8000
39248	Helen Lockhart	617-646-8249
40024	Jeffrey Hsi	617-646-8556
40212	John Van Amsterdam	617-646-8000
40286	Stephen Rabinowitz	212-849-3356
41418	Patrick Waller	617-646-8000
42866	Scott Mckeown	202-389-6025
43069	Edward Russavage	617-646-8515
43988	Adam Wichman	617-646-8571
46190	Michael Pomianek	617-646-8000
46324	Robert Walat	617-646-8000
46533	Charles Baker	617-646-8381
48207	Maria Trevisan	617-646-8000
48644	Andrew Williams	617-646-8000
50474	Gerald Hrycyszyn	617-646-8313
52146	Michael Rader	617-646-8000
52318	Janice Vatland	617-646-8000
52728	Tani Chen	617-646-8214
52957	Matthew Grady	617-646-8000
54986	Melissa Beede	617-646-8000
55151	Roque El Hayek	617-646-8000
57063	Gregory Nieberg	212-849-3338
58404	Tonia Sayour	212-697-7890
58423	Gabriel Mccool	617-646-8000
58767	Michael Parsons	617-646-8942
59924	Nidhi Malla	617-646-8572
61115	Jonathan Roses	617-646-8157
61146	Robert Jensen	617-646-8271
61674	Jessamine Lee	617-646-8272
62868	Daniel Young	617-646-8245
63390	Zachary Piccolomini	617-646-8579
63456	Thomas Franklin	617-646-8000
64978	Marc Johannes	617-646-8209
65507	Robert Sahr	617-646-8484
65843	Heather Dipietrantonio	617-646-8000
66229	Victor Cheung	202-571-5012
66256	Brandon Blackwell	617-646-8360
67110	Jason Balich	617-646-8498
67131	John Harmon Iii	617-646-8307
67336	Elisabeth Hunt	617-646-8443
68177	Oona Johnstone	617-504-4219
68598	Jennifer Wang	617-646-8392
69059	William Zhang	617-646-8257
70034	Cara Dawson	617-646-8000
70972	Daniel Rudoy	617-646-8303
71278	Daniel Smith	214-292-4071
72065	Mark Consilvio	202-408-3938
72100	David Gesner	617-646-8437
73256	Laura Rogers	212-336-3865
73865	Matthew Duffey	617-646-8537
73869	Zhiyun Ge	617-646-8472
73995	Curtis Powell	617-646-8534
74068	Jie Xiang	617-646-8000
74442	Lin Li	617-646-8502
74522	Kevin Macdonald	617-646-8497
75481	Philip Hamzik	617-646-8300
75857	Kirsten Weigel-Van Aken	202-350-2799
75967	Diana Borgas	(612) 339-3061
76050	Anant Saraswat	617-646-8187
76246	Adam Zeiger	617-646-8485
76538	Elizabeth Boehm	617-646-8000
76669	William Czaplyski	617-646-8494
76736	Michele Moresco	617-646-8000
76749	Danielle Samblanet	617-646-8565
76803	Amanda Varrichione	617-646-8161
76839	Jessica Von Reyn	617-646-8000
77021	Nathan Jacobs	617-646-8557
77065	Anne Weeks	617-646-8031
77265	Lingyin Ge	617-646-8199
77456	Saad Alam	617-646-8503
77641	Joseph Bowler	617-646-8393
77692	Elizabeth Mulski	617-646-8352
78514	Harrison Shecter	617-646-8183
78555	Andrew Varrenti	617-646-8314
78667	Flora Luo	617-646-8591
79027	Sarah Schlotter	617-646-8269
79358	Evan Jones	617-646-8000
79399	Andrew Maher	617-646-8596
79628	Tyler Goddard	617-646-8306
79725	Jeffrey Harrigan	617-646-8418
79773	Roshan Plamthottam	617-646-8770
79827	Charlotte Stewart-Sloan	617-646-8341
80263	Shangxing Lu	202-663-6000
80312	Samuel Doskocil	617-646-8198
80320	John Hovestadt	617-646-8348
80331	John Otterbein	908-420-6574
80350	Andrew Mathis	617-646-8562
80358	Colin Buss	617-646-8159
80498	Steven Hannigan	617-646-8573
80639	Edward Stanton	617-646-8873
80711	Kevin Chancellor	617-646-8373
80731	Samuel Kim	617-646-8000
81128	William Lindemann	617-646-8535
81205	Claire Lidston	617-646-8426
81429	Kylee Prosser	617-646-8590
81469	Victoria Julian	617-646-8495
81655	Jill Ryan	978-210-9065
81910	Conor Kavanagh	781-927-8679
81968	Joseph Noreika	212-849-3346
82138	Benjamin Walsh	617-646-8213
82211	Andrew Schlaus	212-849-3337
82354	Allison Mayne	617-646-8000
82491	Evan Bender	212-849-3351
82753	Adrienne Zagieboylo	617-646-8771
83072	Max Zegers	617-646-8660
83077	Samantha Collins	617-646-8564
83258	Karen Cruz	617-646-8444

Proceeding Documents

175

Notice: refund approved NOTICE

2025-11-13 FILING PARTY: BOARD

Download

Petitioner's Request for Refund of Post-Institution Fees OTHER

2025-11-10 FILING PARTY: PETITIONER

Download

DECISION Denying Institution of Inter Partes Review 35 U.S.C. § 314 DECISION

2025-10-08 FILING PARTY: BOARD

Download

Patent Owner's First Updated Mandatory Notices NOTICE

2025-09-24 FILING PARTY: PATENT OWNER

Download

Director Discretionary Decision: Refer RESPONSE

2025-08-14 FILING PARTY: BOARD

Download

Western Digital Technologies et al. vs. Godo Kaisha IP Bridge 1

Proceeding Overview

Parties & Counsel

Petitioner

Western Digital Technologies et al.

Represented By

Patent Owner / Respondent

Godo Kaisha IP Bridge 1

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: refund approved NOTICE

Petitioner's Request for Refund of Post-Institution Fees OTHER

DECISION Denying Institution of Inter Partes Review 35 U.S.C. § 314 DECISION

Patent Owner's First Updated Mandatory Notices NOTICE

Director Discretionary Decision: Refer RESPONSE

[SUBSTITUTE] Technological seeds that overcome the valley of death Exhibit

Transcript of 06-25-2025 Deposition of Jeffrey Bokor, Ph.D. Exhibit

Errata Sheet 6-24 Bokor Depo Transcript [IPR2024-01494] Exhibit

Patent Owner's Preliminary Response POPR

Petitioner's Opposition to Patent Owner's Request for Discretionary Denial of Institution RESPONSE

Duke pgs. 1, 7, 35, 78 Exhibit

Saito - Correlation between Barrier Width, Barrier Height, and DC Bias Voltage Exhibit

[SUBSTITUTE] AIST 20th Tsukuba Prize winner Exhibit

Errata Sheet 6-25 Bokor Depo Transcript [IPR2024-01447, -01493] Exhibit

Transcript of 06-24-2025 Deposition of Jeffrey Bokor, Ph.D. Exhibit

[SUBSTITUTE] Yuasa - IEEE Magnetics Society Exhibit

JP5120680B2 with Certified English Translation Exhibit

Amorphous - Oxford English Reference Dictionary Exhibit

Ferromagnetism - The New Encyclopaedia Britannica Exhibit

Amorphous - The Merriam Webster Dictionary Exhibit

US7851785 Exhibit

Kongtungmon - Effect of annealing atmosphere Exhibit

Tsymbal (2012) - Handbook of Spin Transport and Magnetism Exhibit

Hard disk Market – Global Industry Analysis and Forecast Exhibit

2021 New Fellows - IEEE Japan Council Exhibit

The 23rd (FY2022) Japan Society of Applied Physics Achievement Exhibit

US9287494 Exhibit

JST Yuasa profile Exhibit

AIST 34th Inoue Harunari Prize Exhibit

IPR2024-01494, Paper No. 1 ('909 Petition) Exhibit

Tigunta (2019) Exhibit

Kittel - Introduction to Solid State Physics Exhibit

JST owned patent wins Future Creative Invention Prize Exhibit

Western Digital Annual Report 2024 Exhibit

Yuasa (2004) Nature Materials - Giant room-temperature magnetoresistance Exhibit

IPR2024-01385, Paper No. 1 ('263 Petition) Exhibit

Jiang (2023) TDK - Tunneling magnetoresistive devices Exhibit

Zhu (2006) WD Materials Today - Magnetic tunnel junctions Exhibit

IPR2024-01386, Paper No. 8 ('198 POPR) Exhibit

US6650513 Exhibit

Yuasa citations Exhibit

Tigunta (2020) Exhibit

IPR2024-01386, Paper No. 1 ('198 Petition) Exhibit

Gao - Thin Film Application in Magnetic Recording Exhibit

Soukup Dissertation Exhibit

The Asahi Shimbun Company - The Asahi Prize Exhibit

Yuasa (2012) IEEE - Magnetoresistance and Spin-Transfer Torque Exhibit

Nakatani (2018) WD - Read sensor technology Exhibit

IPR2024-01386, Paper 10 ('198 Decision Denying Institution) Exhibit

Djayaprawira (2005) APL - 230% room-temperature magnetoresistance Exhibit

US20070195592A1 Exhibit

AIST 20th Tsukuba Prize winner Exhibit

EP1737055A1 Exhibit

US8254067 Exhibit

US8514527 File History Exhibit

US8514527 Exhibit

Patent Owner’s Request for Discretionary Denial RESPONSE

Kaiser - Optimization of tunneling magnetoresistance Exhibit

AIST wins 2016 Minister of Education, Culture, Sports, Science and Technology Exhibit

Park - Influence of Boron Diffusion on Transport Exhibit

IPR2024-01385, Paper No. 8 ('263 POPR) Exhibit

Maat (2014) WD Handbook of Spintronics Exhibit

IPR2024-01384, Paper No. 8 ('403 POPR) Exhibit

Yuasa - IEEE Magnetics Society Exhibit

23rd Japan Society of Applied Physics (JSAP) Award Exhibit