Prosecution Insights
Last updated: October 26, 2026

Mitsui Chemicals Asahi Life Materials Co. Ltd.

Technology area: Chemistry & Materials

3 pending office actions • 2 art units • 3 examiners • 0 of 3 (0%) have an AI response strategy ready • 1 patents granted in the last 365 days

Analysis

Mitsui Chemicals Asahi Life Materials Co. Ltd. has 3 pending office actions in Chemistry & Materials. The actions involve 3 distinct examiners but 2 distinct art units, indicating that at least one art unit handles more than one matter.

CHOI, PETER Y is the busiest examiner with 1 pending matter. Counsel can use the shared art-unit context to compare examination positions while still tailoring responses to each examiner.

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

Portfolio Summary

3
Total Pending OAs
3
Non-Final OAs
0
Final Rejections
0
Advisory / Quayle

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.

2
Hard (67%)
1
Medium (33%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (33%)
Multi-statute (no §101)2 (67%)

Industry Mix

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

2
Life Sciences
67% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
1
Business / Other
33% 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.

30 h
Manual time on pending OAs
6 h
Time saved (low, 20%)
10 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
CHOI, PETER Y 1 20.4% +32.5%
BUI, ANH HUYNH NGOC 1 — —
KEYWORTH, PETER 1 58.5% +23.8%

Hard Cases (3)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
18851559 SPUN-BOND NON-WOVEN FABRIC, HYGIENIC MATERIAL, AND METHOD FOR PRODUCING SPUN-BOND NON-WOVEN FABRIC CHOI, PETER Y —
18847069 Nonwoven Fabric and Application Thereof BUI, ANH HUYNH NGOC —
18723999 Coalescer Filter Used in Solvent Extraction Method KEYWORTH, PETER —

Interview Candidates (2)

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 2 ordered by deadline are shown.

App #TitleExaminerDue in
18851559 SPUN-BOND NON-WOVEN FABRIC, HYGIENIC MATERIAL, AND METHOD FOR PRODUCING SPUN-BOND NON-WOVEN FABRIC CHOI, PETER Y —
18723999 Coalescer Filter Used in Solvent Extraction Method KEYWORTH, PETER —

Top Art Units

Art UnitApps
1786 1
1773 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18851559 SPUN-BOND NON-WOVEN FABRIC, HYGIENIC MATERIAL, AND METHOD FOR PRODUCING SPUN-BOND NON-WOVEN FABRIC CHOI, PETER Y 1786 §103 Non-Final OA — Pending Sep 26, 2024
18847069 Nonwoven Fabric and Application Thereof BUI, ANH HUYNH NGOC 1773 §103§112 Non-Final OA — Pending Sep 13, 2024
18723999 Coalescer Filter Used in Solvent Extraction Method KEYWORTH, PETER — §102§103§112 Non-Final OA — Pending Jun 25, 2024

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Frequently Asked Questions

How many pending USPTO office actions does Mitsui Chemicals Asahi Life Materials Co. Ltd. have?

Mitsui Chemicals Asahi Life Materials Co. Ltd. has 3 pending office actions as of October 2026, spread across 2 art units and 3 examiners.

Which USPTO examiner handles the most Mitsui Chemicals Asahi Life Materials Co. Ltd. applications?

Peter Y Choi has the most, with 1 of Mitsui Chemicals Asahi Life Materials Co. Ltd.'s pending office actions.

What technology area are Mitsui Chemicals Asahi Life Materials Co. Ltd.'s patent applications in?

Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.

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