Prosecution Insights
Last updated: October 25, 2026

UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Technology areas: Chemistry & Materials • Semiconductors, Circuits & Optics • Transportation, E-Commerce & Mechanical Systems

4 pending office actions • 4 art units • 4 examiners • 0 of 4 (0%) have an AI response strategy ready • 17 patents granted in the last 365 days

Analysis

The UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA manages 5 pending office actions in the Chemistry & Materials technology area. The portfolio is distributed across 5 distinct art units and 5 distinct examiners, with each examiner handling an action. ELI S MEKHLIN is the busiest examiner, currently managing 1 pending office action.

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
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.

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.

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.

2
Life Sciences
50% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
1
Semiconductors
25% of docket
1
Mechanical / Eng
25% 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
MEKHLIN, ELI S 1 60.4% +48.1%
HELLNER, MARK 1 90.4% +8.6%
MCCLAIN, STARFARI TESHAWN 1 91.2% -12.5%
DEGRASSE, IAN ISAAC 1 81.5% +3.3%

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
18271919 SOLID OXYGEN IONIC CONDUCTOR BASED FIELD-EFFECT TRANSISTOR AND METHOD OF MANUFACTURING THE SAME DEGRASSE, IAN ISAAC 16d overdue
19036083 PEROVSKITE SOLAR CELLS WITH LOCAL SEMI-OPENING PASSIVATION CONTACT STRUCTURE AND PREPARATION METHOD THEREOF MEKHLIN, ELI S —
18724578 FITTING METHOD FOR SPONTANEOUS EMISSION NOISE OF LASER RADAR SYSTEM AND OPTICAL FIBER SENSING SYSTEM HELLNER, MARK —
18429338 POSITIVELY CHARGED QUATERNARY AMMONIUM SALT POLYMER CATALYST AND PREPARATION METHOD AND APPLICATION THEREOF MCCLAIN, STARFARI TESHAWN —

Interview Candidates (1)

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 1 ordered by deadline are shown.

App #TitleExaminerDue in
19036083 PEROVSKITE SOLAR CELLS WITH LOCAL SEMI-OPENING PASSIVATION CONTACT STRUCTURE AND PREPARATION METHOD THEREOF MEKHLIN, ELI S —

Top Art Units

Art UnitApps
1759 1
3645 1
1736 1
2818 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19036083 PEROVSKITE SOLAR CELLS WITH LOCAL SEMI-OPENING PASSIVATION CONTACT STRUCTURE AND PREPARATION METHOD THEREOF MEKHLIN, ELI S 1759 §102§103 Final Rejection — Pending Jan 24, 2025
18724578 FITTING METHOD FOR SPONTANEOUS EMISSION NOISE OF LASER RADAR SYSTEM AND OPTICAL FIBER SENSING SYSTEM HELLNER, MARK 3645 §103§112 Non-Final OA — Pending Jun 26, 2024
18429338 POSITIVELY CHARGED QUATERNARY AMMONIUM SALT POLYMER CATALYST AND PREPARATION METHOD AND APPLICATION THEREOF MCCLAIN, STARFARI TESHAWN 1736 §102§103 Non-Final OA — Pending Jan 31, 2024
18271919 SOLID OXYGEN IONIC CONDUCTOR BASED FIELD-EFFECT TRANSISTOR AND METHOD OF MANUFACTURING THE SAME DEGRASSE, IAN ISAAC 2818 §103§112 Non-Final OA 16d overdue Pending Jul 12, 2023

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Frequently Asked Questions

How many pending USPTO office actions does UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA have?

UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA has 4 pending office actions as of October 2026, spread across 4 art units and 4 examiners.

Which USPTO examiner handles the most UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA applications?

Eli S Mekhlin has the most, with 1 of UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA's pending office actions.

What technology area are UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA's patent applications in?

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

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