Prosecution Insights
Last updated: October 25, 2026

Refeyn Ltd.

Technology areas: Biotechnology & Pharmaceuticals • Semiconductors, Circuits & Optics

4 pending office actions • 2 art units • 4 examiners • 0 of 4 (0%) have an AI response strategy ready • 1 patents granted in the last 365 days

Analysis

Refeyn Ltd. has 4 pending office actions in Semiconductors, Circuits & Optics. The matters are assigned to 4 distinct examiners across 2 distinct art units. Examiner assignments are therefore fully dispersed, while the art-unit distribution shows that multiple matters share an art-unit setting.

EDENFIELD, KUEI-JEN L is the busiest examiner, with 1 pending matter. Counsel can use the two-art-unit structure to coordinate related technical issues while maintaining separate response strategies for each examiner.

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.

2
Hard (50%)
2
Medium (50%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 only1 (25%)
§101 + other1 (25%)
§103 only2 (50%)

Industry Mix

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

1
Life Sciences
25% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
2
Semiconductors
50% of docket
0
Mechanical / Eng
0% of docket
1
Business / Other
25% 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
EDENFIELD, KUEI-JEN L 1 77.6% +15.3%
PHILLIPS, RUFUS L 1 62.7% +32.5%
RAHMAN, MD M 1 92.4% +11.9%
MARCSISIN, ELLEN JEAN 1 34.6% +49.4%

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
18579572 METHOD OF DETERMINING THE IDENTITY OF A BIOMOLECULE RAHMAN, MD M —
18187250 DETECTION OF BIOMARKERS MARCSISIN, ELLEN JEAN —

Interview Candidates (4)

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 4 ordered by deadline are shown.

App #TitleExaminerDue in
18294701 INTERFEROMETRIC SCATTERING MICROSCOPY PHILLIPS, RUFUS L 43d overdue
19102902 IMPROVEMENTS IN OR RELATING TO AN ILLUMINATION DEVICE EDENFIELD, KUEI-JEN L —
18579572 METHOD OF DETERMINING THE IDENTITY OF A BIOMOLECULE RAHMAN, MD M —
18187250 DETECTION OF BIOMARKERS MARCSISIN, ELLEN JEAN —

Top Art Units

Art UnitApps
2877 2
1677 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19102902 IMPROVEMENTS IN OR RELATING TO AN ILLUMINATION DEVICE EDENFIELD, KUEI-JEN L — §103 Non-Final OA — Pending Feb 11, 2025
18294701 INTERFEROMETRIC SCATTERING MICROSCOPY PHILLIPS, RUFUS L 2877 §103 Final Rejection 43d overdue Pending Feb 02, 2024
18579572 METHOD OF DETERMINING THE IDENTITY OF A BIOMOLECULE RAHMAN, MD M 2877 §101 Non-Final OA — Pending Jan 16, 2024
18187250 DETECTION OF BIOMARKERS MARCSISIN, ELLEN JEAN 1677 §101§102§103§112 Non-Final OA — Pending Mar 21, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Refeyn Ltd. have?

Refeyn Ltd. has 4 pending office actions as of October 2026, spread across 2 art units and 4 examiners.

Which USPTO examiner handles the most Refeyn Ltd. applications?

Kuei-Jen L Edenfield has the most, with 1 of Refeyn Ltd.'s pending office actions.

What technology area are Refeyn Ltd.'s patent applications in?

Mostly Semiconductors, Circuits & Optics (USPTO Tech Center 2800), based on where its pending office actions are examined.

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