Prosecution Insights
Last updated: October 25, 2026

Nikkiso Co., Ltd.

Technology areas: Semiconductors, Circuits & Optics • Medical Devices & Mechanical Engineering

18 pending office actions • 16 art units • 18 examiners • 0 of 18 (0%) have an AI response strategy ready • 20 patents granted in the last 365 days

Analysis

Nikkiso Co., Ltd. has 16 pending office actions in Semiconductors, Circuits & Optics. The matters involve 16 distinct examiners and 15 distinct art units, showing broad assignment across the technology area with only limited art-unit overlap.

SEREBOFF, NEAL is the busiest examiner, with 1 pending matter. The lack of a larger examiner concentration means that examiner-specific history will need to be gathered at the individual matter level. The 15 art units also support maintaining separate technical and procedural workstreams instead of treating the portfolio as a single prosecution cluster.

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

Portfolio Summary

18
Total Pending OAs
9
Non-Final OAs
8
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 5 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

1
Overdue
1
Due this week
2
Due this month
1
Due in next 60 days
0
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. 5 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (1)Due ≤ 7 days (1)Due ≤ 30 days (2)Due ≤ 60 days (1)

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.

14
Hard (78%)
3
Medium (17%)
1
Easy (6%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 only1 (6%)
§101 + other3 (17%)
§103 only3 (17%)
§112 only1 (6%)
Multi-statute (no §101)10 (56%)

Industry Mix

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

6
Life Sciences
33% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
7
Semiconductors
39% of docket
5
Mechanical / Eng
28% of docket
0
Business / Other
0% 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.

180 h
Manual time on pending OAs
36 h
Time saved (low, 20%)
63 h
Time saved (mid, 35%)
1.6 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
SEREBOFF, NEAL 1 28.3% +33.4%
LANGE, ERIC A 1 77.6% +12.7%
MENSH, ANDREW J 1 64.5% +19.2%
NGUYEN, BOI-LIEN THI 1 23.4% +30.3%
GU, QINHUA 1 76.2% +27.1%
YUSHIN, NIKOLAY K 1 93.3% +2.1%
SPLIT, JAMES GERALD 1 61.4% +35.3%
SARCENO ROBLES, CHRISTIAN MANUEL 1 50.0% +100.0%
YI, CHANGHYUN 1 93.9% +4.3%
HATFIELD, MARSHALL MU-NUO 1 92.7% +4.4%

Hard Cases (15)

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
18570167 BLOOD PURIFICATION APPARATUS WRUBLESKI, MATTHEW JAMES 56d overdue
18396037 BLOOD PURIFICATION APPARATUS NGUYEN, BOI-LIEN THI 12d
17177591 CELL CULTURE METHOD AND CELL CULTURE APPARATUS BOWERS, ERIN M 16d
18533998 LIGHT OUTPUT ESTIMATION METHOD FOR LIGHT-EMITTING DEVICE BARBEE, MANUEL L 34d
19223426 Blood Purification System SEREBOFF, NEAL —
18756365 ACCESS PORT MEMBER AND METHOD OF MANUFACTURING THE SAME LANGE, ERIC A —
19005543 METHOD OF CULTURING CELL, METHOD OF MANUFACTURING CELL SUPPORT COMPLEX, CULTURED CELL, AND CELL SUPPORT COMPLEX GU, QINHUA —
18795517 SEMICONDUCTOR LIGHT-EMITTING APPARATUS YUSHIN, NIKOLAY K —

Interview Candidates (7)

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 7 ordered by deadline are shown.

App #TitleExaminerDue in
18418554 BLOOD PURIFICATION APPARATUS MENSH, ANDREW J 7d
18396037 BLOOD PURIFICATION APPARATUS NGUYEN, BOI-LIEN THI 12d
19223426 Blood Purification System SEREBOFF, NEAL —
18756365 ACCESS PORT MEMBER AND METHOD OF MANUFACTURING THE SAME LANGE, ERIC A —
19005543 METHOD OF CULTURING CELL, METHOD OF MANUFACTURING CELL SUPPORT COMPLEX, CULTURED CELL, AND CELL SUPPORT COMPLEX GU, QINHUA —
18782375 MOTOR BEARING WEAR MONITORING DEVICE, METHOD FOR ADJUSTING MOTOR BEARING WEAR MONITORING DEVICE AND PROGRAM SPLIT, JAMES GERALD —
18730802 MEDICAL TREATMENT TOOL SARCENO ROBLES, CHRISTIAN MANUEL —

Top Art Units

Art UnitApps
3781 2
1633 2
3683 1
3783 1
1779 1
2893 1
2858 1
3794 1
2812 1
2897 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19223426 Blood Purification System SEREBOFF, NEAL 3683 §101§112 Non-Final OA — Pending May 30, 2025
18756365 ACCESS PORT MEMBER AND METHOD OF MANUFACTURING THE SAME LANGE, ERIC A 3783 §102§103§112 Non-Final OA — Pending Jun 27, 2024
18418554 BLOOD PURIFICATION APPARATUS MENSH, ANDREW J 3781 §103 Non-Final OA 7d Pending Jan 22, 2024
18396037 BLOOD PURIFICATION APPARATUS NGUYEN, BOI-LIEN THI 1779 §103 Final Rejection 12d Pending Dec 26, 2023
19005543 METHOD OF CULTURING CELL, METHOD OF MANUFACTURING CELL SUPPORT COMPLEX, CULTURED CELL, AND CELL SUPPORT COMPLEX GU, QINHUA 1633 §101§102 Non-Final OA — Pending Dec 30, 2024
18795517 SEMICONDUCTOR LIGHT-EMITTING APPARATUS YUSHIN, NIKOLAY K 2893 §102§103 Non-Final OA — Pending Aug 06, 2024
18782375 MOTOR BEARING WEAR MONITORING DEVICE, METHOD FOR ADJUSTING MOTOR BEARING WEAR MONITORING DEVICE AND PROGRAM SPLIT, JAMES GERALD 2858 §112 Non-Final OA — Pending Jul 24, 2024
18730802 MEDICAL TREATMENT TOOL SARCENO ROBLES, CHRISTIAN MANUEL 3794 §103§112 Non-Final OA — Pending Jul 22, 2024
18748809 SEMICONDUCTOR LIGHT-EMITTING APPARATUS YI, CHANGHYUN 2812 §102§103 Final Rejection — Pending Jun 20, 2024
18733434 SEMICONDUCTOR LIGHT-EMITTING APPARATUS HATFIELD, MARSHALL MU-NUO 2897 §102§103 Final Rejection — Pending Jun 04, 2024
18636926 CELL CULTIVATION METHOD, CELL SUPPORT COMPOSITE PRODUCTION METHOD, CULTIVATED CELLS, AND CELL SUPPORT COMPOSITE PYLA, EVELYN Y 1633 §101§102§112 Non-Final OA — Pending Apr 16, 2024
18613655 NITRIDE SEMICONDUCTOR LIGHT-EMITTING ELEMENT KEBEDE, BROOK 2818 §102§103 Final Rejection — Pending Mar 22, 2024
18431552 CULTURE DEVICE AND CULTURE METHOD KWAK, DEAN P 1798 §102§103§112 Non-Final OA — Pending Feb 02, 2024
18570167 BLOOD PURIFICATION APPARATUS WRUBLESKI, MATTHEW JAMES 3781 §103§112 Final Rejection 56d overdue Pending Dec 14, 2023
18533998 LIGHT OUTPUT ESTIMATION METHOD FOR LIGHT-EMITTING DEVICE BARBEE, MANUEL L 2857 §101 Final Rejection 34d Pending Dec 08, 2023
18242591 NITRIDE SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND METHOD FOR MANUFACTURING NITRIDE SEMICONDUCTOR LIGHT-EMITTING ELEMENT HSIEH, HSIN YI 2899 §103 Final Rejection — Pending Sep 06, 2023
17979451 HOLLOW FIBER MEMBRANE MODULE AND METHOD FOR REMOVING ENDOTOXINS CHIU, TAK LIANG 1777 §103§112 Non-Final OA — Pending Nov 02, 2022
17177591 CELL CULTURE METHOD AND CELL CULTURE APPARATUS BOWERS, ERIN M 1653 §103§112 Final Rejection 16d Pending Feb 17, 2021

Managing Nikkiso Co., Ltd.'s Patent Portfolio?

IP Author helps IP teams respond to office actions faster with AI-generated responses, examiner analytics, and prosecution intelligence.

Start Free Trial

Frequently Asked Questions

How many pending USPTO office actions does Nikkiso Co., Ltd. have?

Nikkiso Co., Ltd. has 18 pending office actions as of October 2026, spread across 16 art units and 18 examiners.

Which USPTO examiner handles the most Nikkiso Co., Ltd. applications?

Neal Sereboff has the most, with 1 of Nikkiso Co., Ltd.'s pending office actions.

What technology area are Nikkiso Co., Ltd.'s patent applications in?

Mostly Semiconductors, Circuits & Optics (USPTO Tech Center 2800), based on where its pending office actions are examined.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month