Prosecution Insights
Last updated: October 25, 2026

Stella Chemifa Corporation

Technology area: Chemistry & Materials

6 pending office actions • 6 art units • 5 examiners • 0 of 6 (0%) have an AI response strategy ready • 2 patents granted in the last 365 days

Analysis

Stella Chemifa Corporation has 7 pending office actions in Chemistry & Materials. The matters span 6 distinct examiners and 7 art units, so the docket reaches across a separate art-unit context for each pending action while examiner coverage is slightly more concentrated.

HOBBS, MICHAEL L is the busiest examiner, with 2 pending matters. That concentration is limited within the broader docket, which otherwise involves multiple examiner assignments. Prosecution planning should account for the art-unit spread and preserve matter-specific strategies rather than assuming a single recurring examination pattern.

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

Portfolio Summary

6
Total Pending OAs
3
Non-Final OAs
3
Final Rejections
0
Advisory / Quayle

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.

3
Hard (50%)
3
Medium (50%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (17%)
§102 only2 (33%)
Multi-statute (no §101)3 (50%)

Industry Mix

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

6
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.

60 h
Manual time on pending OAs
12 h
Time saved (low, 20%)
21 h
Time saved (mid, 35%)
0.5 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
HOBBS, MICHAEL L 2 68.7% +28.4%
NGUYEN, HAIDUNG D 1 64.8% +28.1%
WHITELEY, JESSICA 1 88.6% +7.1%
SMITH, JEREMIAH R 1 58.1% +24.8%
AHMED, SHAMIM 1 78.5% +22.1%

Quick Wins (1)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
18709948 NEUTRON SHIELDING MATERIAL AND METHOD FOR PRODUCING SAME WHITELEY, JESSICA —

Hard Cases (3)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
19119969 FLUORIDE PARTICLES DISPERSION NGUYEN, HAIDUNG D —
18259250 CELL CULTURE MEMBER AND METHOD FOR MODIFYING SURFACE THEREOF HOBBS, MICHAEL L —
18259237 CELL CULTURE MEMBER AND METHOD FOR MODIFYING SURFACE THEREOF HOBBS, MICHAEL L —

Interview Candidates (5)

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 5 ordered by deadline are shown.

App #TitleExaminerDue in
19119969 FLUORIDE PARTICLES DISPERSION NGUYEN, HAIDUNG D —
18705092 FLAME-RETARDANT NON-AQUEOUS ELECTROLYTIC SOLUTION AND SECONDARY BATTERY USING SAME SMITH, JEREMIAH R —
18259250 CELL CULTURE MEMBER AND METHOD FOR MODIFYING SURFACE THEREOF HOBBS, MICHAEL L —
18259237 CELL CULTURE MEMBER AND METHOD FOR MODIFYING SURFACE THEREOF HOBBS, MICHAEL L —
18251334 MICROMACHINING PROCESSING AGENT AND MICROMACHINING PROCESSING METHOD AHMED, SHAMIM —

Top Art Units

Art UnitApps
1761 1
1763 1
1723 1
1799 1
1632 1
1713 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19119969 FLUORIDE PARTICLES DISPERSION NGUYEN, HAIDUNG D 1761 §102§103 Non-Final OA — Pending Apr 10, 2025
18709948 NEUTRON SHIELDING MATERIAL AND METHOD FOR PRODUCING SAME WHITELEY, JESSICA 1763 §102 Non-Final OA — Pending May 14, 2024
18705092 FLAME-RETARDANT NON-AQUEOUS ELECTROLYTIC SOLUTION AND SECONDARY BATTERY USING SAME SMITH, JEREMIAH R 1723 §102 Non-Final OA — Pending Apr 26, 2024
18259250 CELL CULTURE MEMBER AND METHOD FOR MODIFYING SURFACE THEREOF HOBBS, MICHAEL L 1799 §102§103 Final Rejection — Pending Jun 23, 2023
18259237 CELL CULTURE MEMBER AND METHOD FOR MODIFYING SURFACE THEREOF HOBBS, MICHAEL L 1632 §102§103Other Final Rejection — Pending Jun 23, 2023
18251334 MICROMACHINING PROCESSING AGENT AND MICROMACHINING PROCESSING METHOD AHMED, SHAMIM 1713 §103 Final Rejection — Pending May 01, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Stella Chemifa Corporation have?

Stella Chemifa Corporation has 6 pending office actions as of October 2026, spread across 6 art units and 5 examiners.

Which USPTO examiner handles the most Stella Chemifa Corporation applications?

Michael L Hobbs has the most, with 2 of Stella Chemifa Corporation's pending office actions.

What technology area are Stella Chemifa Corporation's patent applications in?

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

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