Prosecution Insights
Last updated: October 02, 2026

Shiu-Yin Cheng

Technology area: Transportation, E-Commerce & Mechanical Systems

3 pending office actions • 1 art units • 2 examiners • 0 of 3 (0%) have an AI response strategy ready

Analysis

Shiu-Yin Cheng currently manages 3 pending office actions within the Transportation, E-Commerce & Mechanical Systems technology area. These matters are distributed across 2 distinct examiners, indicating a concentrated prosecution effort. All the actions are contained within 1 distinct art unit, which suggests a narrow technical focus for the portfolio. This single art unit environment simplifies the procedural landscape for the applicant by limiting the variety of internal USPTO policies encountered.

MERCADO, LOUIS A serves as the busiest examiner for this portfolio, handling 2 of the pending office actions. This concentration means that a single examiner oversees a portion of the pending workload. Practitioners should note that the other distinct examiner involved in these proceedings handles the rest of the pending office actions. The presence of the distinct examiners across the 3 pending office actions reflects a high degree of examiner overlap within the 1 art unit involved. This distribution allows for a focused strategy when addressing the actions.

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

Portfolio Summary

3
Total Pending OAs
1
Non-Final OAs
2
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.

1
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.

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.

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
3
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.

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
MERCADO, LOUIS A 2 78.8% +18.4%
LEE, MICHAEL S 1 63.0% +20.8%

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
18666952 COIL-TYPE FLUID-IMPERVIOUS ZIPPER AND COMMERCIAL PRODUCT USING SAME MERCADO, LOUIS A 147d overdue
18657375 SLIDER CAPABLE OF MINIMIZING SCRATCHING ON ZIPPER, ZIPPER USING THE SLIDER, AND COMMERCIAL PRODUCT USING THE ZIPPER MERCADO, LOUIS A —

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
18666952 COIL-TYPE FLUID-IMPERVIOUS ZIPPER AND COMMERCIAL PRODUCT USING SAME MERCADO, LOUIS A 147d overdue
18991415 COIL-TYPE FLUID-IMPERVIOUS ZIPPER AND COMMERCIAL PRODUCT USING SAME LEE, MICHAEL S —
18657375 SLIDER CAPABLE OF MINIMIZING SCRATCHING ON ZIPPER, ZIPPER USING THE SLIDER, AND COMMERCIAL PRODUCT USING THE ZIPPER MERCADO, LOUIS A —

Top Art Units

Art UnitApps
3677 3

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18991415 COIL-TYPE FLUID-IMPERVIOUS ZIPPER AND COMMERCIAL PRODUCT USING SAME LEE, MICHAEL S 3677 §103 Non-Final OA — Pending Dec 21, 2024
18666952 COIL-TYPE FLUID-IMPERVIOUS ZIPPER AND COMMERCIAL PRODUCT USING SAME MERCADO, LOUIS A 3677 §102§103 Final Rejection 147d overdue Pending May 17, 2024
18657375 SLIDER CAPABLE OF MINIMIZING SCRATCHING ON ZIPPER, ZIPPER USING THE SLIDER, AND COMMERCIAL PRODUCT USING THE ZIPPER MERCADO, LOUIS A 3677 §102§103 Final Rejection — Pending May 07, 2024

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