Prosecution Insights
Last updated: October 25, 2026

Largan Medical Co. Ltd.

Technology area: Chemistry & Materials

4 pending office actions • 3 art units • 4 examiners • 0 of 4 (0%) have an AI response strategy ready • 3 patents granted in the last 365 days

Analysis

Largan Medical Co. Ltd. manages 4 pending office actions in the Chemistry & Materials technology area. These actions are distributed among 4 distinct examiners and 3 distinct art units, indicating a mix of technical focuses. The use of 3 distinct art units suggests that the company's chemical or material research is being evaluated by several different specialized groups within the patent office. This distribution means the company must navigate the requirements of 3 distinct art units, each with its own set of examination standards and timelines.

LEE, DORIS L is the busiest examiner for the portfolio, currently managing 1 pending office action. With 4 pending office actions in total and 4 distinct examiners involved, the workload is spread such that each examiner is responsible for exactly one matter. This lack of examiner concentration means that prosecution strategies must be tailored to the specific tendencies of four different individuals. The presence of 4 distinct examiners across 3 distinct art units highlights the need for a versatile approach to the company's Chemistry & Materials portfolio.

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

Portfolio Summary

4
Total Pending OAs
3
Non-Final OAs
0
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 2 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

0
Overdue
0
Due this week
2
Due this month
0
Due in next 60 days
0
Due later

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 (50%)
2
Medium (50%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only2 (50%)
Multi-statute (no §101)2 (50%)

Industry Mix

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

3
Life Sciences
75% 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
25% 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.

40 h
Manual time on pending OAs
8 h
Time saved (low, 20%)
14 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
LEE, DORIS L 1 58.7% +8.8%
BROWN, MADISON ELIZABETH 1 — —
EGWIM, KELECHI CHIDI 1 69.7% +14.7%
GRANNUM, VERITA EUDORA EBUN 1 61.3% +45.6%

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
18210941 PLASTICIZER, PLASTIC COMPOSITION, AND PLASTIC PRODUCT EGWIM, KELECHI CHIDI 28d
18394541 PLASTICIZER, PLASTIC COMPOSITION, AND PLASTIC PRODUCT LEE, DORIS L —

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
18210941 PLASTICIZER, PLASTIC COMPOSITION, AND PLASTIC PRODUCT EGWIM, KELECHI CHIDI 28d
18155832 POLYMER, ELECTROLYTE AND BATTERY GRANNUM, VERITA EUDORA EBUN 29d

Top Art Units

Art UnitApps
1787 1
1762 1
1721 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18394541 PLASTICIZER, PLASTIC COMPOSITION, AND PLASTIC PRODUCT LEE, DORIS L — §102§103 Non-Final OA — Pending Dec 22, 2023
18530328 COMPOSITION, ANODE AND BATTERY BROWN, MADISON ELIZABETH 1787 §103 Non-Final OA — Pending Dec 06, 2023
18210941 PLASTICIZER, PLASTIC COMPOSITION, AND PLASTIC PRODUCT EGWIM, KELECHI CHIDI 1762 §102§103 Non-Final OA 28d Pending Jun 16, 2023
18155832 POLYMER, ELECTROLYTE AND BATTERY GRANNUM, VERITA EUDORA EBUN 1721 §103 Non-Final OA 29d Pending Jan 18, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Largan Medical Co. Ltd. have?

Largan Medical Co. Ltd. has 4 pending office actions as of October 2026, spread across 3 art units and 4 examiners.

Which USPTO examiner handles the most Largan Medical Co. Ltd. applications?

Doris L Lee has the most, with 1 of Largan Medical Co. Ltd.'s pending office actions.

What technology area are Largan Medical 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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