Prosecution Insights
Last updated: October 04, 2026

Sumitomo Electric Toyama Co. Ltd.

Technology area: Chemistry & Materials

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

Analysis

Sumitomo Electric Toyama Co. Ltd. maintains a patent portfolio in the Chemistry & Materials technology area. The company currently has 2 pending office actions. These actions are handled by 2 distinct examiners, including ZHENG, LOIS L, who is the busiest examiner for the portfolio.

The prosecution is distributed across distinct art units. ZHENG, LOIS L is responsible for 1 pending office action. Since the pending actions are split between the involved individuals, this distribution requires the legal team to monitor separate sets of examiner behaviors and art unit guidelines.

The presence of 1 pending office action under the busiest examiner indicates that no single individual dominates the portfolio's current prosecution. Practitioners should tailor their responses to the specific technical requirements of the distinct art units. The focus on Chemistry & Materials suggests that the pending matters likely involve specialized material science or chemical processing techniques.

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

Portfolio Summary

2
Total Pending OAs
1
Non-Final OAs
1
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 1 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

0
Overdue
0
Due this week
0
Due this month
1
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 (100%)
0
Medium (0%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
Multi-statute (no §101)2 (100%)

Industry Mix

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

2
Life Sciences
100% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% 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.

20 h
Manual time on pending OAs
4 h
Time saved (low, 20%)
7 h
Time saved (mid, 35%)
0.2 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
ZHENG, LOIS L 1 67.6% +13.0%
KENLAW, GRACE A 1 50.8% +37.7%

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
18289403 ALUMINUM ALLOY, ALUMINUM ALLOY WIRE, AND METHOD OF MANUFACTURING ALUMINUM ALLOY WIRE ZHENG, LOIS L 33d
18021998 NICKEL-CHROMIUM POROUS BODY AND METHOD OF MANUFACTURING NICKEL-CHROMIUM POROUS BODY KENLAW, GRACE A —

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
18289403 ALUMINUM ALLOY, ALUMINUM ALLOY WIRE, AND METHOD OF MANUFACTURING ALUMINUM ALLOY WIRE ZHENG, LOIS L 33d
18021998 NICKEL-CHROMIUM POROUS BODY AND METHOD OF MANUFACTURING NICKEL-CHROMIUM POROUS BODY KENLAW, GRACE A —

Top Art Units

Art UnitApps
1733 1
1723 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18289403 ALUMINUM ALLOY, ALUMINUM ALLOY WIRE, AND METHOD OF MANUFACTURING ALUMINUM ALLOY WIRE ZHENG, LOIS L 1733 §102§103§112 Final Rejection 33d Pending Nov 03, 2023
18021998 NICKEL-CHROMIUM POROUS BODY AND METHOD OF MANUFACTURING NICKEL-CHROMIUM POROUS BODY KENLAW, GRACE A 1723 §103§112 Non-Final OA — Pending Feb 17, 2023

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