Prosecution Insights
Last updated: May 29, 2026

Mitsubishi Pencil Company Limited

7 pending office actions • 7 art units • 7 examiners • 0 of 7 (0%) have an AI response strategy ready • 16 patents granted in the last 365 days

Portfolio Summary

7
Total Pending OAs
3
Non-Final OAs
3
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 7 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

2
Overdue
0
Due this week
3
Due this month
0
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. 7 of the docket's apps have a known mailing date.

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

1
Hard (14%)
5
Medium (71%)
0
Easy (0%)
1
Unknown (14%)

Rejection Statute Mix

BucketCases
§101 only1 (14%)
§103 only5 (71%)
No statute on record1 (14%)

Industry Mix

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

6
Life Sciences
86% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
14% 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.

70 h
Manual time on pending OAs
14 h
Time saved (low, 20%)
24 h
Time saved (mid, 35%)
0.6 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
OLIVER, BRADLEY S 1 61.1% +14.2%
SCOTLAND, REBECCA LYNN 1 0.0% +0.0%
NGUYEN, KHANH TUAN 1 74.5% +18.5%
BROWE, DAVID 1 25.8% +28.7%
LIOTT, CAROLINE DUSHECK 1 51.5% -1.7%
YU, HONG 1 31.2% +5.7%
BARZACH, JEFFREY EUGENE 1 54.2% +43.3%

Hard Cases (2)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
18706826 AQUEOUS LIQUID COSMETIC SCOTLAND, REBECCA LYNN 28d
18558081 ANTIMICROBIAL PARTICLE DISPERSION BROWE, DAVID 84d

Interview Candidates (4)

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 4 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
18690892 REDUCING PARTICLE DISPERSION NGUYEN, KHANH TUAN 84d
18558081 ANTIMICROBIAL PARTICLE DISPERSION BROWE, DAVID 84d

Top Art Units

Art UnitApps
3754 1
1615 1
1761 1
1617 1
1732 1
1614 1
1731 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18726214 WRITING IMPLEMENT REFILL AND METHOD OF ENGRAVING WRITING IMPLEMENT REFILL OLIVER, BRADLEY S 3754 §103 Final Rejection 27d Pending Jul 02, 2024
18706826 AQUEOUS LIQUID COSMETIC SCOTLAND, REBECCA LYNN 1615 §101 Non-Final OA 28d Pending May 02, 2024
18690892 REDUCING PARTICLE DISPERSION NGUYEN, KHANH TUAN 1761 §103 Final Rejection 84d Pending Mar 11, 2024
18558081 ANTIMICROBIAL PARTICLE DISPERSION BROWE, DAVID 1617 §103 Non-Final OA 84d Pending Oct 30, 2023
18278733 COMPOSITE COLORED PARTICLES LIOTT, CAROLINE DUSHECK 1732 Other Non-Final OA 70d overdue Pending Aug 24, 2023
18250470 MARKER COMPOSITION FOR SKIN YU, HONG 1614 §103 Final Rejection 12d Pending Apr 25, 2023
17435847 AQUEOUS INK COMPOSITION FOR WRITING INSTRUMENTS BARZACH, JEFFREY EUGENE 1731 §103 Non-Final OA 19d overdue Pending Sep 02, 2021

Managing Mitsubishi Pencil Company Limited'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

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