Prosecution Insights
Last updated: August 29, 2026

Hitachi Energy Ltd.

34 pending office actions • 19 art units • 29 examiners • 0 of 34 (0%) have an AI response strategy ready • 129 patents granted in the last 365 days

Portfolio Summary

34
Total Pending OAs
25
Non-Final OAs
7
Final Rejections
2
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 11 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

4
Overdue
0
Due this week
3
Due this month
2
Due in next 60 days
2
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. 11 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (4)Due ≤ 30 days (3)Due ≤ 60 days (2)Due later (2)

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.

17
Hard (50%)
14
Medium (41%)
1
Easy (3%)
2
Unknown (6%)

Rejection Statute Mix

BucketCases
§101 only1 (3%)
§101 + other3 (9%)
§103 only11 (32%)
§102 only3 (9%)
§112 only1 (3%)
Multi-statute (no §101)13 (38%)
No statute on record2 (6%)

Industry Mix

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

2
Life Sciences
6% of docket
1
Information Tech
3% of docket
0
Communications
0% of docket
21
Semiconductors
62% of docket
3
Mechanical / Eng
9% of docket
7
Business / Other
21% 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.

340 h
Manual time on pending OAs
68 h
Time saved (low, 20%)
119 h
Time saved (mid, 35%)
3.0 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
NGUYEN, TUYEN T 3 81.5% +1.1%
COMBER, KEVIN J 2 82.6% +11.8%
BOLTON, WILLIAM A 2 89.2% +5.8%
LIAN, MANG TIN BIK 2 70.3% +26.0%
BEHRENS JR., ANDRES E 1 53.6% +17.9%
MASINICK, JONATHAN PETER 1 68.5% +34.0%
LEWIS-TAYLOR, DAYTON A. 1 80.9% +2.9%
LAU, HOI CHING 1 74.4% +16.2%
MCDONALD, JASON ANDREW 1 66.7% +100.0%
MAI, ANH D 1 37.9% +9.7%

Quick Wins (4)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 4 ordered by deadline are shown.

App #TitleExaminerDue in
18018152 WINDING ARRANGEMENT, TRANSFORMER AND METHOD FOR PRODUCING A WINDING ARRANGEMENT NGUYEN, TUYEN T 15d
19126717 QUICK START FOR IEDS LEWIS-TAYLOR, DAYTON A. —
18730890 FAST EARTHING SWITCH FOR INTERRUPTING NON-SHORT-CIRCUIT CURRENTS BOLTON, WILLIAM A —
18677175 High voltage circuit breaker with particle trap BOLTON, WILLIAM A —

Hard Cases (17)

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
17766657 INSULATION ASSEMBLY, TRANSFORMER ASSEMBLY, AND DRY TYPE TRANSFORMER NGUYEN, TUYEN T 30d overdue
18289849 METHOD FOR PRODUCING A SILICON CARBIDE SUBSTRATE CRAWFORD EASON, LATANYA N 9d overdue
18285983 CURRENT DAMPER FOR VOLTAGE TRANSFORMER ALONZO MILLER, RHADAMES J 4d overdue
19105092 PROTECTION ARRANGEMENT FOR A TRANSFORMER COMBER, KEVIN J 43d
18022191 TIE PLATE FOR A TRANSFORMER CORE ASSEMBLY WHITTINGTON, KENNETH 85d
19149542 MECHANICAL FUSE DEVICE FOR PROTECTING SWITCHING APPARATUS MASINICK, JONATHAN PETER —
19082679 PROCESSING SYSTEM AND METHOD FOR AN ELECTRIC POWER SYSTEM, AND MACHINE-READABLE INSTRUCTION CODE LAU, HOI CHING —
19003839 FAULT CLASSIFICATION AND ZONE IDENTIFICATION IN A POWER TRANSMISSION SYSTEM COMBER, KEVIN J —

Interview Candidates (8)

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
17918779 TRANSFORMER AND MANUFACTURING METHOD LIAN, MANG TIN BIK 2d overdue
17928289 HYBRID TRANSFORMER CORE AND METHOD OF MANUFACTURING A TRANSFORMER CORE LIAN, MANG TIN BIK 29d
19105092 PROTECTION ARRANGEMENT FOR A TRANSFORMER COMBER, KEVIN J 43d
19151116 DEVICE AND METHOD FOR MANUFACTURING A COMPONENT OF A TRANSFORMER SYSTEM BEHRENS JR., ANDRES E —
19149542 MECHANICAL FUSE DEVICE FOR PROTECTING SWITCHING APPARATUS MASINICK, JONATHAN PETER —
19082679 PROCESSING SYSTEM AND METHOD FOR AN ELECTRIC POWER SYSTEM, AND MACHINE-READABLE INSTRUCTION CODE LAU, HOI CHING —
19111130 METHOD FOR PRODUCING A SEMICONDUCTOR BODY, SEMICONDUCTOR BODY AND POWER SEMICONDUCTOR DEVICE MCDONALD, JASON ANDREW —
19003839 FAULT CLASSIFICATION AND ZONE IDENTIFICATION IN A POWER TRANSMISSION SYSTEM COMBER, KEVIN J —

Top Art Units

Art UnitApps
2837 7
2838 3
2857 2
1741 1
3678 1
2181 1
2898 1
2893 1
2836 1
2855 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19151116 DEVICE AND METHOD FOR MANUFACTURING A COMPONENT OF A TRANSFORMER SYSTEM BEHRENS JR., ANDRES E 1741 §103 Non-Final OA — Pending Jul 25, 2025
19149542 MECHANICAL FUSE DEVICE FOR PROTECTING SWITCHING APPARATUS MASINICK, JONATHAN PETER 3678 §102§103§112 Non-Final OA — Pending Jul 20, 2025
19126717 QUICK START FOR IEDS LEWIS-TAYLOR, DAYTON A. 2181 §102 Non-Final OA — Pending May 02, 2025
19082679 PROCESSING SYSTEM AND METHOD FOR AN ELECTRIC POWER SYSTEM, AND MACHINE-READABLE INSTRUCTION CODE LAU, HOI CHING — §101§112 Non-Final OA — Pending Mar 18, 2025
19111130 METHOD FOR PRODUCING A SEMICONDUCTOR BODY, SEMICONDUCTOR BODY AND POWER SEMICONDUCTOR DEVICE MCDONALD, JASON ANDREW 2898 — Final Rejection — Pending Mar 12, 2025
19105092 PROTECTION ARRANGEMENT FOR A TRANSFORMER COMBER, KEVIN J 2838 §102§103 Non-Final OA 43d Pending Feb 20, 2025
18881996 POWER SEMICONDUCTOR DEVICE HAVING GATE ELECTRODE COVERS AT MOST A PORTION OF THE DRIFT REGION MAI, ANH D 2893 §103 Non-Final OA 79d Pending Jan 07, 2025
19003839 FAULT CLASSIFICATION AND ZONE IDENTIFICATION IN A POWER TRANSMISSION SYSTEM COMBER, KEVIN J — §102§103 Non-Final OA — Pending Dec 27, 2024
18856734 APPARATUS AND SYSTEM FOR POWER CONVERSION AND METHOD FOR CONTROLLING THE APPARATUS SHIAO, DAVID A 2836 §103 Final Rejection — Pending Oct 14, 2024
18730890 FAST EARTHING SWITCH FOR INTERRUPTING NON-SHORT-CIRCUIT CURRENTS BOLTON, WILLIAM A — §112 Non-Final OA — Pending Jul 22, 2024
18677175 High voltage circuit breaker with particle trap BOLTON, WILLIAM A — §103 Non-Final OA — Pending May 29, 2024
18710947 METHOD AND SYSTEM FOR OPERATING AN ENERGY MANAGEMENT SYSTEM WORKU, KIDEST — §101§103§112 Non-Final OA — Pending May 16, 2024
18700057 MONITORING SUBSTATIONS OF A POWER GRID RAEVIS, ROBERT R 2855 §102§103§112 Non-Final OA — Pending Apr 10, 2024
18688814 COOLING ARRANGEMENT AND METHOD FOR COOLING AT LEAST ONE OIL-TO-AIR EXTERNAL HEAT EXCHANGER LEE, GEOFFREY S 3763 §103§112 Non-Final OA — Pending Mar 04, 2024
18290714 POWER SEMICONDUCTOR DEVICE SRINIVASAN, SESHA SAIRAMAN 2812 §103 Final Rejection — Pending Jan 19, 2024
18563819 A SYSTEM COMPRISING ENERGY STORAGE UNITS AND METHOD IN SUCH A SYSTEM INSTONE, NATHANIEL JOSEPH — §103 Non-Final OA — Pending Nov 22, 2023
18289849 METHOD FOR PRODUCING A SILICON CARBIDE SUBSTRATE CRAWFORD EASON, LATANYA N 2813 §102§103 Final Rejection 9d overdue Pending Nov 07, 2023
18385612 PRESS PLATE, A SYSTEM FOR COMPRESSING PRESSBOARD PRECURSOR AND A METHOD FOR COMPRESSING PRESSBOARD PRECURSOR GRAHAM, ANDREW D 1742 §102§103§112 Non-Final OA — Pending Oct 31, 2023
18556242 METHOD OF CONTROLLING A POWER CONVERTER, CONVERTER ARRANGEMENT AND COMPUTER PROGRAM PRODUCT NOVAK, PETER MICHAEL 2838 §103 Non-Final OA 14d Pending Oct 19, 2023
18285983 CURRENT DAMPER FOR VOLTAGE TRANSFORMER ALONZO MILLER, RHADAMES J 2847 §102§103 Non-Final OA 4d overdue Pending Oct 06, 2023
18470157 Condition-Based Method for Malfunction Prediction BACA, MATTHEW WALTER 2857 §101 Final Rejection — Pending Sep 19, 2023
18244175 SEMICONDUCTOR POWER MODULE AND METHOD FOR MANUFACTURING A SEMICONDUCTOR POWER MODULE FOR A SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE KIELIN, ERIK J 2814 §103 Non-Final OA 55d Pending Sep 08, 2023
18270681 CORE ARRANGEMENT, TRANSFORMER, METHOD FOR PRODUCING A CORE ARRANGEMENT AND METHOD FOR PRODUCING A TRANSFORMER HOSSAIN, KAZI S 2837 §102 Non-Final OA — Pending Jun 30, 2023
18039750 PROGNOSIS OF HIGH VOLTAGE EQUIPMENT ISLAM, MOHAMMAD K 2857 §101§103 Non-Final OA — Pending Jun 01, 2023
18034553 LIFTING FRAME FOR LIFTING A TRANSFORMER OR REACTOR RODDEN, JOSHUA E 3642 §102§112 Non-Final OA — Pending Apr 28, 2023
18034567 TRANSFORMER CORE BARNES, MALCOLM 2837 — Non-Final OA — Pending Apr 28, 2023
18026924 Power Module and Method for Producing a Power Module BULLARD-CONNOR, GENEVIEVE GRACE 2899 §102§103 Non-Final OA — Pending Mar 17, 2023
18023477 COIL FOR A TRANSFORMER CORE NGUYEN, TUYEN T 2837 §103§112 Non-Final OA — Pending Feb 27, 2023
18022191 TIE PLATE FOR A TRANSFORMER CORE ASSEMBLY WHITTINGTON, KENNETH 3992 §103§112 Non-Final OA 85d Pending Feb 20, 2023
18018152 WINDING ARRANGEMENT, TRANSFORMER AND METHOD FOR PRODUCING A WINDING ARRANGEMENT NGUYEN, TUYEN T 2837 §102 Final Rejection 15d Pending Jan 26, 2023
17928289 HYBRID TRANSFORMER CORE AND METHOD OF MANUFACTURING A TRANSFORMER CORE LIAN, MANG TIN BIK 2837 §103 Final Rejection 29d Pending Nov 29, 2022
17918779 TRANSFORMER AND MANUFACTURING METHOD LIAN, MANG TIN BIK 2837 §103 Non-Final OA 2d overdue Pending Oct 13, 2022
17766657 INSULATION ASSEMBLY, TRANSFORMER ASSEMBLY, AND DRY TYPE TRANSFORMER NGUYEN, TUYEN T 2837 §102§103 Non-Final OA 30d overdue Pending Apr 05, 2022
17624218 ELECTROMAGNETIC INDUCTION DEVICE WITH ON-LOAD TAP CHANGER LEE, JYE-JUNE 2838 §103 Non-Final OA — Pending Dec 30, 2021

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