Prosecution Insights
Last updated: October 26, 2026

Yonwoo Co., Ltd.

Technology area: Medical Devices & Mechanical Engineering

4 pending office actions • 3 art units • 4 examiners • 0 of 4 (0%) have an AI response strategy ready • 29 patents granted in the last 365 days

Analysis

Yonwoo Co., Ltd. currently has 4 pending office actions in the Medical Devices & Mechanical Engineering technology area. These 4 actions are being reviewed by 4 distinct examiners, ensuring that each case is evaluated by a different person. The prosecution is spread across 3 distinct art units, which indicates some technical concentration within the USPTO's review process. This distribution requires the company to tailor its responses to the specific requirements of 4 different examiners across 3 distinct art units.

STEVENS, ALLAN D is the busiest examiner for the portfolio, though they are only responsible for 1 pending office action. With 4 distinct examiners and 3 distinct art units involved, the company faces a variety of examiner perspectives across its 4 pending office actions. The fact that there are 3 distinct art units for 4 actions suggests that at least two actions are being handled within the same technical group, though by different examiners. This level of distribution means that the company must manage multiple examiner styles while maintaining a consistent technical narrative within the 3 distinct art units. The prosecution strategy should account for the unique procedural tendencies of each of the 4 distinct examiners.

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

Portfolio Summary

4
Total Pending OAs
4
Non-Final OAs
0
Final Rejections
0
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.

2
Overdue
0
Due this week
0
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.

4
Hard (100%)
0
Medium (0%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
Multi-statute (no §101)4 (100%)

Industry Mix

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

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
4
Mechanical / Eng
100% 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.

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
WALCZAK, DAVID J 1 74.1% +17.7%
ETZEL, ALAN RAYMOND 1 100.0% +0.0%
STEVENS, ALLAN D 1 41.5% +50.3%
DEMEREE, CHRISTOPHER R 1 68.9% +14.2%

Hard Cases (4)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 4 ordered by deadline are shown.

App #TitleExaminerDue in
18699097 PUMP ASSEMBLY COMPRISING ROTATION PREVENTION STRUCTURE DEMEREE, CHRISTOPHER R 114d overdue
19104929 CONTENTS CONTAINER STEVENS, ALLAN D 19d overdue
19134085 CONTENTS CONTAINER WALCZAK, DAVID J —
19104949 CONTENTS CONTAINER ETZEL, ALAN RAYMOND —

Interview Candidates (3)

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 3 ordered by deadline are shown.

App #TitleExaminerDue in
18699097 PUMP ASSEMBLY COMPRISING ROTATION PREVENTION STRUCTURE DEMEREE, CHRISTOPHER R 114d overdue
19104929 CONTENTS CONTAINER STEVENS, ALLAN D 19d overdue
19134085 CONTENTS CONTAINER WALCZAK, DAVID J —

Top Art Units

Art UnitApps
3754 2
3736 1
3734 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19134085 CONTENTS CONTAINER WALCZAK, DAVID J 3754 §102§103§112 Non-Final OA — Pending May 29, 2025
19104949 CONTENTS CONTAINER ETZEL, ALAN RAYMOND 3754 §102§112 Non-Final OA — Pending Feb 19, 2025
19104929 CONTENTS CONTAINER STEVENS, ALLAN D 3736 §103§112 Non-Final OA 19d overdue Pending Feb 19, 2025
18699097 PUMP ASSEMBLY COMPRISING ROTATION PREVENTION STRUCTURE DEMEREE, CHRISTOPHER R 3734 §102§112 Non-Final OA 114d overdue Pending Apr 05, 2024

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Frequently Asked Questions

How many pending USPTO office actions does Yonwoo Co., Ltd. have?

Yonwoo 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 Yonwoo Co., Ltd. applications?

David J Walczak has the most, with 1 of Yonwoo Co., Ltd.'s pending office actions.

What technology area are Yonwoo Co., Ltd.'s patent applications in?

Mostly Medical Devices & Mechanical Engineering (USPTO Tech Center 3700), based on where its pending office actions are examined.

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