Prosecution Insights
Last updated: October 26, 2026

Hitachi Ltd.

Technology areas: Computing & Software • Transportation, E-Commerce & Mechanical Systems

307 pending office actions • 149 art units • 281 examiners • 0 of 307 (0%) have an AI response strategy ready • 568 patents granted in the last 365 days

Analysis

Hitachi Ltd. has 544 pending office actions in Transportation, E-Commerce & Mechanical Systems. The docket spans 451 distinct examiners and 196 distinct art units, giving it a wide examination footprint. The difference between the pending-action count and the examiner count indicates that some examiners handle more than one matter, while the art-unit distribution creates additional opportunities to identify recurring technical and procedural themes.

THOMPSON, CURTIS A is the busiest examiner, with 10 pending matters. That concentration warrants examiner-specific preparation for the affected cases, but it does not define the full docket. Counsel should maintain centralized tracking for common claim issues while preserving separate strategies for the many examiner and art-unit combinations represented.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

307
Total Pending OAs
139
Non-Final OAs
161
Final Rejections
7
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 66 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

26
Overdue
3
Due this week
21
Due this month
13
Due in next 60 days
3
Due later

Deadline Fire Line

Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 66 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (26)Due ≤ 7 days (3)Due ≤ 30 days (21)Due ≤ 60 days (13)Due later (3)

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

202
Hard (66%)
90
Medium (29%)
14
Easy (5%)
1
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 only34 (11%)
§101 + other96 (31%)
§103 only81 (26%)
§102 only7 (2%)
§112 only14 (5%)
Double-patenting + other2 (1%)
Multi-statute (no §101)72 (23%)
No statute on record1 (0%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

15
Life Sciences
5% of docket
107
Information Tech
35% of docket
21
Communications
7% of docket
40
Semiconductors
13% of docket
117
Mechanical / Eng
38% of docket
7
Business / Other
2% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

3,070 h
Manual time on pending OAs
614 h
Time saved (low, 20%)
1,074 h
Time saved (mid, 35%)
26.9 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
YEN, SYLING 3 75.0% +28.1%
BINCZAK, BRANDON MICHAEL 3 39.4% +35.3%
PRASAD, NANCY N 3 21.3% +18.2%
WAESCO, JOSEPH M 3 46.7% +42.1%
LIAN, MANG TIN BIK 3 70.4% +26.0%
NGUYEN, TUYEN T 3 81.5% +1.5%
HOLZMACHER, DERICK J 2 44.4% +28.6%
BROCKINGTON III, WILLIAM S 2 42.2% +55.4%
XU, PETER 2 50.0% +0.0%
SHECHTMAN, SEAN P 2 75.4% +22.2%

Quick Wins (2)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
18018152 WINDING ARRANGEMENT, TRANSFORMER AND METHOD FOR PRODUCING A WINDING ARRANGEMENT NGUYEN, TUYEN T 15d
18023477 COIL FOR A TRANSFORMER CORE NGUYEN, TUYEN T —

Hard Cases (202)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
16642187 PLASMA PROCESSING METHOD AND PLASMA PROCESSING APPARATUS ALEJANDRO MULERO, LUZ L 86d overdue
17766657 INSULATION ASSEMBLY, TRANSFORMER ASSEMBLY, AND DRY TYPE TRANSFORMER NGUYEN, TUYEN T 30d overdue
18536839 DATA AUDIT SYSTEM AND DATA AUDIT METHOD OBAID, FATEH M 29d overdue
18866873 Agent Management System and Agent Management Method KUNTZ, JEWEL A 24d overdue
18269619 ENVIRONMENTAL CONTROL DEVICE, ENVIRONMENTAL CONTROL METHOD, AND ENVIRONMENTAL CONTROL PROGRAM SHARMIN, ANZUMAN 16d overdue
19265123 Consensus Building Support Device, Consensus Building Support Method, and Recording Medium WORJLOH, JALATEE 11d overdue
18651288 AUTOMATED SECURITY TESTING SYSTEMS USING MULTI-TIERED LANGUAGE MODELS BINCZAK, BRANDON MICHAEL 11d overdue
18642868 RESOURCE USAGE AMOUNT MANAGEMENT SYSTEM AND RESOURCE USAGE AMOUNT MANAGEMENT METHOD OBAID, HAMZEH M 9d overdue

Interview Candidates (21)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
18651288 AUTOMATED SECURITY TESTING SYSTEMS USING MULTI-TIERED LANGUAGE MODELS BINCZAK, BRANDON MICHAEL 11d overdue
18115061 SALES ACTIVITY SUPPORT APPARATUS AND SALES ACTIVITY SUPPORT METHOD WAESCO, JOSEPH M 3d overdue
18816077 WORKFLOW CREATION SUPPORT DEVICE AND METHOD BROCKINGTON III, WILLIAM S 5d
18993131 COMPUTER SYSTEM AND METHOD FOR GENERATING STRUCTURED DATA REPRESENTING BUSINESS PROCESS WAESCO, JOSEPH M 15d
18830843 SYSTEM AND METHOD FOR PERFORMING TEST FOR TAMPERING VERIFICATION IN ACTIVATION OF SOFTWARE TO BE EXECUTED BY STORAGE CONTROLLER BINCZAK, BRANDON MICHAEL 21d
18776114 TRANSPORTATION AND DELIVERY PLANNING APPARATUS AND METHOD PRASAD, NANCY N 29d
17928289 HYBRID TRANSFORMER CORE AND METHOD OF MANUFACTURING A TRANSFORMER CORE LIAN, MANG TIN BIK 29d
18928292 BEHAVIOR ANALYSIS SYSTEM AND BEHAVIOR ANALYSIS METHOD BROCKINGTON III, WILLIAM S 53d

Top Art Units

Art UnitApps
3624 18
3625 11
3628 8
3627 8
2857 8
2837 8
2116 7
2186 7
3663 7
2119 5

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19329761 COMPUTER SYSTEM AND FILE STORAGE KHONG, ALEXANDER 2168 §103 Non-Final OA — Pending Sep 16, 2025
19323305 STORAGE SYSTEM AND STORAGE CONTROL METHOD YU, XINYUAN 2113 §102§103 Non-Final OA — Pending Sep 09, 2025
19323620 STORAGE SYSTEM AND DATA CONTROL METHOD YEN, SYLING 2166 §101§103 Final Rejection — Pending Sep 09, 2025
19311571 STORAGE SYSTEM AND DATA PROTECTION METHOD HUANG, BRYAN PAI SONG 2114 §102§103§112 Non-Final OA — Pending Aug 27, 2025
19087822 CONFIGURATION CHANGE SUPPORT APPARATUS AND CONFIGURATION CHANGE SUPPORT METHOD MYERS, PAUL R 2176 §103 Non-Final OA — Pending Mar 24, 2025
19077375 SYSTEM CONFIGURATION PROPOSAL APPARATUS, SYSTEM CONFIGURATION PROPOSAL METHOD, AND RECORDING MEDIUM MEHRMANESH, ELMIRA 2137 §102§103 Final Rejection — Pending Mar 12, 2025
19076436 INFORMATION PROCESSING SYSTEM AND CONTROL METHOD CYGIEL, GARY W 2137 §102§112 Non-Final OA — Pending Mar 11, 2025
19074547 STORAGE SYSTEM AND VOLUME PATH SWITCHING METHOD FOR STORAGE SYSTEM CHAN, TRACY C 2138 — Non-Final OA — Pending Mar 10, 2025
19070633 INFORMATION PROCESSING SYSTEM AND METHOD FOR CONTROLLING INFORMATION PROCESSING SYSTEM RAJAPUTRA, SUMAN 2163 §103 Final Rejection 4d overdue Pending Mar 05, 2025
19068377 STORAGE SYSTEM ALSIP, MICHAEL 2139 §102 Final Rejection — Pending Mar 03, 2025
19064964 STORAGE MANAGEMENT SYSTEM AND STORAGE MANAGEMENT METHOD KUDIRKA, JOSEPH R 2114 §101§102§112 Final Rejection — Pending Feb 27, 2025
19064288 STORAGE SYSTEM, ASYNCHRONOUS COPY METHOD, AND ASYNCHRONOUS COPY PROGRAM CARDWELL, ERIC 2139 §103 Final Rejection — Pending Feb 26, 2025
18884935 STORAGE SYSTEM BENNER, JANE WEI 2139 §102§112 Final Rejection — Pending Sep 13, 2024
18882368 STORAGE SYSTEM HAILE, AWET A 2474 §103§112 Non-Final OA — Pending Sep 11, 2024
18830843 SYSTEM AND METHOD FOR PERFORMING TEST FOR TAMPERING VERIFICATION IN ACTIVATION OF SOFTWARE TO BE EXECUTED BY STORAGE CONTROLLER BINCZAK, BRANDON MICHAEL 2437 §112 Final Rejection 21d Pending Sep 11, 2024
18817970 SITE MANAGEMENT APPARATUS AND SITE MANAGEMENT METHOD FENNEMA, ROBERT E 2117 §103§112 Non-Final OA — Pending Aug 28, 2024
19324313 TRANSPORTATION PLANNING APPARATUS AND TRANSPORTATION PLANNING METHOD JOSEPH, TONYA S 3628 §101 Final Rejection — Pending Sep 10, 2025
19160099 Operation Control Apparatus, Operation Control Method, and Operation Control System TALLMAN, BRIAN A 3628 §101§103§112 Non-Final OA — Pending Aug 27, 2025
19159421 WORK PROCESS SUPPORT SYSTEM AND WORK PROCESS SUPPORT METHOD ESTEVEZ, DAIRON 3656 §103§112 Non-Final OA — Pending Aug 25, 2025
19154638 MAINTENANCE PLANNING ASSISTANCE SYSTEM AND METHOD FOR GENERATING FACILITY MAINTENANCE PLAN SUMMERS, KIERSTEN V 3626 §101§102 Final Rejection — Pending Aug 07, 2025
19151776 CONVEYANCE TASK MANAGEMENT SYSTEM AND CONVEYANCE TASK MANAGEMENT METHOD MOLNAR, SIDNEY LEIGH 3656 §101§102§103§112 Non-Final OA — Pending Jul 29, 2025
19150219 Electric Motor Control Device SLOWIK, ELIZABETH J 3662 §103§112 Non-Final OA — Pending Jul 23, 2025
19276368 RADIO WAVE GENERATING APPARATUS, RADIO WAVE DETECTING APPARATUS, AND RADIO WAVE TRANSMITTING AND RECEIVING SYSTEM TSE, YOUNG TOI 2631 §112 Non-Final OA — Pending Jul 22, 2025
19265123 Consensus Building Support Device, Consensus Building Support Method, and Recording Medium WORJLOH, JALATEE 3697 §101§103 Final Rejection 11d overdue Pending Jul 10, 2025
19146589 QUANTUM COMPUTER AND SINGLE-ELECTRON/SINGLE-HOLE TRANSPORTING METHOD CHEN, SIBIN 2842 §103 Non-Final OA — Pending Jul 09, 2025
19262205 CONFIDENTIAL COMPUTATION SYSTEM AND CONFIDENTIAL COMPUTATION METHOD HUSSAIN, TAUQIR 2449 §103 Non-Final OA — Pending Jul 08, 2025
19260704 DATA PROCESSING APPARATUS, DATA PROCESSING METHOD, AND DATA PROCESSING PROGRAM HALE, BROOKS T 2166 §101§103 Non-Final OA — Pending Jul 07, 2025
19143682 VIRTUAL SPACE INFORMATION MANAGEMENT METHOD AND VIRTUAL SPACE INFORMATION MANAGEMENT SYSTEM CIRNU, ALEXANDRU 3622 §101§112 Final Rejection — Pending Jun 26, 2025
19135857 Gas Compression Device and Maintenance Method Therefor MIAN, SHAFIQ A 3746 §103 Non-Final OA — Pending Jun 05, 2025
19214128 GEOSPATIAL DATA PLATFORM, GEOSPATIAL DATA USING SYSTEM, GEOSPATIAL DATA PROVIDING METHOD, AND PROGRAM GOFMAN, ALEX N 2163 §101 Final Rejection — Pending May 21, 2025
19209982 Correlation Analysis System, Integrated System, Correlation Analysis Method, and Correlation Analysis Program GURMU, MULUEMEBET 2163 §101 Non-Final OA — Pending May 16, 2025
19191023 Risk Analysis Method and Risk Analysis System SCHEUNEMANN, RICHARD N 3624 §101§103 Final Rejection — Pending Apr 28, 2025
19120345 IDEA GENERATION SUPPORT SYSTEM AND IDEA GENERATION SUPPORT METHOD YEN, SYLING 2166 §101§103§112 Non-Final OA — Pending Apr 11, 2025
19119448 Method and System for Determining Countermeasure Against Service Quality Degradation SINGH, RUPANGINI 3628 §101§103 Final Rejection — Pending Apr 09, 2025
18841040 OPERATION MANAGEMENT SYSTEM AND OPERATION MANAGEMENT METHOD PRASAD, NANCY N 3624 §101§103 Final Rejection — Pending Apr 09, 2025
19114893 DESIGN SUPPORT METHOD, DESIGN SUPPORT SYSTEM, AND PROGRAM VORCE, AMELIA J.I. 3661 §112 Non-Final OA — Pending Mar 25, 2025
19115126 COMPUTATION DEVICE, PLANNING ASSISTANCE METHOD, AND PROGRAM CHEIN, ALLEN C 3627 §101§102§103 Non-Final OA — Pending Mar 25, 2025
19083824 FILE MANAGEMENT SYSTEM AND FILE MANAGEMENT METHOD YEN, SYLING 2166 §103§112 Non-Final OA — Pending Mar 19, 2025
19110920 INFORMATION ANALYSIS METHOD, INFORMATION ANALYSIS SERVER, AND DIGITAL INFORMATION MANAGEMENT SYSTEM GEBRESENBET, DINKU W 2164 §103 Non-Final OA — Pending Mar 12, 2025
19077487 IT OPERATION MANAGEMENT APPARATUS AND METHOD WEBB III, JAMES L 3624 §103 Final Rejection — Pending Mar 12, 2025
19110899 GAS SENSOR CHIP, GAS SENSING SYSTEM, AND PRODUCTION METHOD FOR GAS SENSOR CHIP NOGUEROLA, ALEXANDER STEPHAN 1795 §112 Non-Final OA — Pending Mar 12, 2025
19110978 COMMUNICATION DEVICE AND RECEPTION DATA PROCESSING METHOD IN COMMUNICATION DEVICE BORROMEO, JUANITO C 2184 §103 Non-Final OA — Pending Mar 12, 2025
19109951 STEREO ADAPTER, STEREO CAMERA, AND STEREO CAMERA SYSTEM MAHONEY, CHRISTOPHER E 2852 §102§103§112 Non-Final OA — Pending Mar 07, 2025
19110051 ELECTRIC-POWER MANAGEMENT ADMINISTRATION SYSTEM, ELECTRIC-POWER MANAGEMENT ADMINISTRATION DEVICE, AND ELECTRIC-POWER MANAGEMENT ADMINISTRATION METHOD PARRIES, DRU M 2836 §102§103 Final Rejection — Pending Mar 07, 2025
19072872 DATA COMPRESSION SYSTEM, DATA COMPRESSION METHOD, AND DATA COMPRESSION PROGRAM JEANGLAUDE, JEAN BRUNER 2845 §102 Non-Final OA — Pending Mar 06, 2025
19070841 COOPERATIVE ACTION SUPPORT SYSTEM AND COOPERATIVE ACTION SUPPORT METHOD EL-BATHY, MOHAMED N 3624 §101§102§103 Non-Final OA — Pending Mar 05, 2025
19068421 QUESTION GENERATION APPARATUS, QUESTION GENERATION SYSTEM, AND QUESTION GENERATION METHOD UTAMA, ROBERT J 3715 §101§103§112 Non-Final OA — Pending Mar 03, 2025
19066233 WORKER EVALUATION SYSTEM AND WORKER EVALUATION METHOD ANDERSON, FOLASHADE 3623 §101§102 Non-Final OA — Pending Feb 28, 2025
19066369 COMPUTER SYSTEM AND DATA TRANSMISSION METHOD GILLESPIE, KAMRYN JORDAN 2408 §103 Final Rejection — Pending Feb 28, 2025
19063575 INFORMATION PROCESSING SYSTEM AND INFORMATION PROCESSING METHOD YESILDAG, MEHMET 3624 §101§103 Final Rejection — Pending Feb 26, 2025

View all 307 →

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Frequently Asked Questions

How many pending USPTO office actions does Hitachi Ltd. have?

Hitachi Ltd. has 307 pending office actions as of October 2026, spread across 149 art units and 281 examiners.

Which USPTO examiner handles the most Hitachi Ltd. applications?

Syling Yen has the most, with 3 of Hitachi Ltd.'s pending office actions.

What technology area are Hitachi Ltd.'s patent applications in?

Mostly Transportation, E-Commerce & Mechanical Systems (USPTO Tech Center 3600), based on where its pending office actions are examined.

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