Prosecution Insights
Last updated: August 18, 2026

Hitachi Energy Ltd.

31 pending office actions • 18 art units • 28 examiners • 0 of 31 (0%) have an AI response strategy ready • 137 patents granted in the last 365 days

Portfolio Summary

31
Total Pending OAs
26
Non-Final OAs
5
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 10 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

3
Overdue
1
Due this week
2
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. 10 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (3)Due ≤ 7 days (1)Due ≤ 30 days (2)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.

18
Hard (58%)
12
Medium (39%)
1
Easy (3%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 only1 (3%)
§101 + other3 (10%)
§103 only10 (32%)
§102 only2 (6%)
§112 only1 (3%)
Multi-statute (no §101)14 (45%)

Industry Mix

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

1
Life Sciences
3% of docket
1
Information Tech
3% of docket
0
Communications
0% of docket
19
Semiconductors
61% of docket
3
Mechanical / Eng
10% of docket
7
Business / Other
23% 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.

310 h
Manual time on pending OAs
62 h
Time saved (low, 20%)
108 h
Time saved (mid, 35%)
2.7 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
COMBER, KEVIN J 2 82.6% +11.8%
BOLTON, WILLIAM A 2 89.2% +5.8%
LIAN, MANG TIN BIK 2 70.2% +26.1%
BEHRENS JR., ANDRES E 1 53.7% +18.0%
MASINICK, JONATHAN PETER 1 68.6% +33.9%
LEWIS-TAYLOR, DAYTON A. 1 80.9% +3.0%
LAU, HOI CHING 1 74.3% +16.2%
MAI, ANH D 1 37.9% +10.0%
SHIAO, DAVID A 1 75.5% +30.6%
CORDOVA RODRIGUEZ, ULARISLAO 1 89.5% +11.8%

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
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
18712799 POWER CONTROL OF A POWER CONVERTER BASED ON A VARIABLE MODULATION FREQUENCY CORDOVA RODRIGUEZ, ULARISLAO

Hard Cases (18)

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
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
18276237 POWER SEMICONDUCTOR MODULE, POWER SEMICONDUCTOR DEVICE AND METHOD FOR PRODUCING A POWER SEMICONDUCTOR DEVICE GANDHI, JAYPRAKASH N 5d
19105092 PROTECTION ARRANGEMENT FOR A TRANSFORMER COMBER, KEVIN J 43d
18881996 POWER SEMICONDUCTOR DEVICE HAVING GATE ELECTRODE COVERS AT MOST A PORTION OF THE DRIFT REGION MAI, ANH D 79d
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

Interview Candidates (10)

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
18881996 POWER SEMICONDUCTOR DEVICE HAVING GATE ELECTRODE COVERS AT MOST A PORTION OF THE DRIFT REGION MAI, ANH D 79d
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
19003839 FAULT CLASSIFICATION AND ZONE IDENTIFICATION IN A POWER TRANSMISSION SYSTEM COMBER, KEVIN J

Top Art Units

Art UnitApps
2838 4
2837 4
2857 2
1741 1
3678 1
2181 1
2893 1
2836 1
2855 1
3763 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
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 §102§103§112 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
18712799 POWER CONTROL OF A POWER CONVERTER BASED ON A VARIABLE MODULATION FREQUENCY CORDOVA RODRIGUEZ, ULARISLAO 2838 §103 Non-Final OA Pending May 23, 2024
18710947 METHOD AND SYSTEM FOR OPERATING AN ENERGY MANAGEMENT SYSTEM WORKU, KIDEST §101§103§112 Non-Final OA Pending May 16, 2024
18710115 COOLER UNIT, SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING A COOLER UNIT LINDSAY JR, WALTER LEE §102§103 Non-Final OA Pending May 14, 2024
18700057 MONITORING SUBSTATIONS OF A POWER GRID RAEVIS, ROBERT R 2855 §102§103§112 Final Rejection 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
18289849 METHOD FOR PRODUCING A SILICON CARBIDE SUBSTRATE CRAWFORD EASON, LATANYA N 2813 §102§103 Non-Final OA 9d overdue Pending Nov 07, 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
18276237 POWER SEMICONDUCTOR MODULE, POWER SEMICONDUCTOR DEVICE AND METHOD FOR PRODUCING A POWER SEMICONDUCTOR DEVICE GANDHI, JAYPRAKASH N 2835 §102§103§112 Non-Final OA 5d Pending Aug 07, 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
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
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
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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