Prosecution Insights
Last updated: October 02, 2026

MITSUBISHI PENCIL Company, Limited

Technology areas: Biotechnology & Pharmaceuticals • Chemistry & Materials • Medical Devices & Mechanical Engineering

21 pending office actions • 8 art units • 18 examiners • 0 of 21 (0%) have an AI response strategy ready • 14 patents granted in the last 365 days

Portfolio Summary

21
Total Pending OAs
15
Non-Final OAs
4
Final Rejections
2
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.

2
Overdue
0
Due this week
2
Due this month
0
Due in next 60 days
1
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 (2)Due ≤ 30 days (2)Due later (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.

7
Hard (33%)
13
Medium (62%)
1
Easy (5%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only8 (38%)
§102 only2 (10%)
§112 only1 (5%)
Double-patenting + other3 (14%)
Multi-statute (no §101)7 (33%)

Industry Mix

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

10
Life Sciences
48% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
3
Mechanical / Eng
14% of docket
8
Business / Other
38% 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.

210 h
Manual time on pending OAs
42 h
Time saved (low, 20%)
74 h
Time saved (mid, 35%)
1.8 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
OLIVER, BRADLEY S 3 60.9% +14.3%
BARZACH, JEFFREY EUGENE 2 57.1% +40.6%
WALCZAK, DAVID J 1 74.1% +17.7%
YOUNG, WILLIAM D 1 54.3% +15.2%
NGUYEN, HAIDUNG D 1 64.9% +28.4%
COUGHLIN, DANIEL F 1 39.0% +18.6%
ARIF, NOAH JACOB 1 — —
PATTERSON, MICHAEL CHRISTOPHER 1 48.6% +39.3%
BURKE, MATTHEW RYAN 1 0.0% +0.0%
FUBARA, BLESSING M 1 62.2% +34.3%

Hard Cases (8)

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
18706826 AQUEOUS LIQUID COSMETIC SCOTLAND, REBECCA LYNN 28d
18699472 WRITING INSTRUMENT AND WRITING PART REPLACEMENT UNIT WALCZAK, DAVID J —
19106144 BATTERY ELECTRODE GRAPHITE DISPERSION NGUYEN, HAIDUNG D —
18871382 RESIN FOR HAIR COSMETICS, AND HAIR COSMETIC BURKE, MATTHEW RYAN —
18865009 INK STORAGE MEMBER FOR WRITING IMPLEMENTS OLIVER, BRADLEY S —
18291354 AQUEOUS INK COMPOSITION FOR WRITING INSTRUMENTS HALL, DEVE V. —
18551063 OILY INK COMPOSITION FOR WRITING UTENSIL BARZACH, JEFFREY EUGENE —
18274996 PRUSSIAN BLUE DISPERSION FOR COSMETICS, AND COSMETICS INCLUDING SAME LIU, TRACY —

Interview Candidates (11)

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
17435847 AQUEOUS INK COMPOSITION FOR WRITING INSTRUMENTS BARZACH, JEFFREY EUGENE 19d overdue
18726214 WRITING IMPLEMENT REFILL AND METHOD OF ENGRAVING WRITING IMPLEMENT REFILL OLIVER, BRADLEY S 27d
18699472 WRITING INSTRUMENT AND WRITING PART REPLACEMENT UNIT WALCZAK, DAVID J —
19114966 CARBON MATERIAL DISPERSION SOLUTION AND SLURRY COMPOSITION FOR SECONDARY BATTERY NEGATIVE ELECTRODES IN WHICH SAME IS USED YOUNG, WILLIAM D —
18833481 LIQUID STORAGE MEMBER FOR COATING TOOLS OLIVER, BRADLEY S —
19106144 BATTERY ELECTRODE GRAPHITE DISPERSION NGUYEN, HAIDUNG D —
19061056 PIGMENT DISPERSION FOR AQUEOUS COSMETIC COMPOSITIONS, AND AQUEOUS COSMETIC COMPOSITION USING THE SAME COUGHLIN, DANIEL F —
18875352 KNOCK TYPE WRITING INSTRUMENT PATTERSON, MICHAEL CHRISTOPHER —

Top Art Units

Art UnitApps
3754 3
1761 2
1615 2
1731 2
1613 1
1767 1
1732 1
1614 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18699472 WRITING INSTRUMENT AND WRITING PART REPLACEMENT UNIT WALCZAK, DAVID J — §102§103§112 Non-Final OA — Pending Jun 18, 2025
19114966 CARBON MATERIAL DISPERSION SOLUTION AND SLURRY COMPOSITION FOR SECONDARY BATTERY NEGATIVE ELECTRODES IN WHICH SAME IS USED YOUNG, WILLIAM D 1761 §103 Non-Final OA — Pending Mar 25, 2025
18833481 LIQUID STORAGE MEMBER FOR COATING TOOLS OLIVER, BRADLEY S — §103 Non-Final OA — Pending Mar 10, 2025
19106144 BATTERY ELECTRODE GRAPHITE DISPERSION NGUYEN, HAIDUNG D — §102§112 Non-Final OA — Pending Feb 24, 2025
19061056 PIGMENT DISPERSION FOR AQUEOUS COSMETIC COMPOSITIONS, AND AQUEOUS COSMETIC COMPOSITION USING THE SAME COUGHLIN, DANIEL F — §103 Non-Final OA — Pending Feb 24, 2025
18880554 COSMETIC APPLICATOR ARIF, NOAH JACOB 3754 §102 Non-Final OA — Pending Jan 01, 2025
18875352 KNOCK TYPE WRITING INSTRUMENT PATTERSON, MICHAEL CHRISTOPHER — §102 Non-Final OA — Pending Dec 16, 2024
18871382 RESIN FOR HAIR COSMETICS, AND HAIR COSMETIC BURKE, MATTHEW RYAN — §103 Non-Final OA — Pending Dec 03, 2024
18865009 INK STORAGE MEMBER FOR WRITING IMPLEMENTS OLIVER, BRADLEY S 3754 §103§112 Non-Final OA — Pending Nov 12, 2024
18726214 WRITING IMPLEMENT REFILL AND METHOD OF ENGRAVING WRITING IMPLEMENT REFILL OLIVER, BRADLEY S 3754 §103 Non-Final OA 27d Pending Jul 02, 2024
18722637 AQUEOUS LIQUID COSMETIC MATERIAL FUBARA, BLESSING M 1613 §103DP Non-Final OA — Pending Jun 21, 2024
18717176 AQUEOUS LIQUID COSMETIC PALENIK, JEFFREY T 1615 §102§103§112DP Final Rejection — Pending Jun 06, 2024
18706826 AQUEOUS LIQUID COSMETIC SCOTLAND, REBECCA LYNN 1615 §102§103§112 Final Rejection 28d Pending May 02, 2024
18626530 AQUEOUS GLITTERING INK FOR MINIATURE PAINTING AND APPLICATORS EASHOO, MARK — §103 Non-Final OA — Pending Apr 04, 2024
18690892 REDUCING PARTICLE DISPERSION NGUYEN, KHANH TUAN 1761 §103 Non-Final OA 84d Pending Mar 11, 2024
18291354 AQUEOUS INK COMPOSITION FOR WRITING INSTRUMENTS HALL, DEVE V. — §103§112 Non-Final OA — Pending Jan 23, 2024
18551063 OILY INK COMPOSITION FOR WRITING UTENSIL BARZACH, JEFFREY EUGENE 1731 §102§103 Non-Final OA — Pending Sep 18, 2023
18549397 OILY INK COMPOSITION KARST, DAVID THOMAS 1767 §103 Final Rejection — Pending Sep 07, 2023
18278733 COMPOSITE COLORED PARTICLES LIOTT, CAROLINE DUSHECK 1732 §103§112DP Non-Final OA 70d overdue Pending Aug 24, 2023
18274996 PRUSSIAN BLUE DISPERSION FOR COSMETICS, AND COSMETICS INCLUDING SAME LIU, TRACY 1614 §103§112 Non-Final OA — Pending Jul 29, 2023
17435847 AQUEOUS INK COMPOSITION FOR WRITING INSTRUMENTS BARZACH, JEFFREY EUGENE 1731 §112 Final Rejection 19d overdue Pending Sep 02, 2021

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