Prosecution Insights
Last updated: October 25, 2026

Levenfeld Pearlstein, LLC

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

10 pending office actions • 9 clients • 10 examiners • 10 art units • 0 of 10 (0%) have an AI response strategy ready

Analysis

Levenfeld Pearlstein, LLC has 1,031 career applications in Chemistry & Materials and 11 pending office actions. The difference between the application history and current pending docket makes the profile useful for distinguishing accumulated prosecution activity from immediate workload.

The resolved allowance rate is 90.27%, and allowed matters have averaged 2.64 office actions per allowance. These figures describe both the reported resolution outcome and the office-action activity associated with allowances.

For practitioners, the pending matters warrant direct docket attention, while the historical measures can inform review of amendment practice and prosecution effort in Chemistry & Materials. The data does not by itself explain the reasons for allowance or the status of any individual application.

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

Quality Metrics (n=1031 apps, methodology: how we score firms)

90.3%
Allowance Rate
n=1031
+0.84σ
Allowance Rate (norm)
n=1031
2.6
OAs to Allowance
n=761
-0.47σ
OAs to Allow (norm)
n=761
968 days
Time to Allowance
n=761
+3.6pp
Interview Lift
n=1031
20.4%
RCE Rate
n=1031
0.7%
Appeal Rate
n=1031

Rejection Performance (% of received rejections ultimately overcome)

80.4%
§101 Overcome
n=56
80.6%
§102 Overcome
n=278
84.9%
§103 Overcome
n=418
86.6%
§112 Overcome
n=307

Specialization & Scale

A61K, Y10T, A61P
Top CPC Subclasses
11%
Top-3 CPC Share
n=1031
2
Practitioners
n=1031
515.5
Apps / Practitioner
n=1031

Portfolio Summary

10
Total Pending OAs
6
Non-Final OAs
2
Final Rejections
2
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.

7
Hard (70%)
3
Medium (30%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other1 (10%)
§103 only2 (20%)
§102 only1 (10%)
Multi-statute (no §101)6 (60%)

Industry Mix

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

5
Life Sciences
50% of docket
1
Information Tech
10% of docket
1
Communications
10% of docket
2
Semiconductors
20% of docket
1
Mechanical / Eng
10% 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.

100 h
Manual time on pending OAs
20 h
Time saved (low, 20%)
35 h
Time saved (mid, 35%)
0.9 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
CATTANACH, COLIN J 1 59.1% +19.8%
GARCIA, BETHANY CLAIRE 1 66.7% +34.5%
AVINA, RACHEL MARIE 1 — —
SENGUPTA, SONYA MAZUMDAR 1 68.6% +20.2%
CHAI, RAYMOND REI-YANG 1 75.0% +15.9%
KALHORI, DAN F 1 50.0% -33.3%
KENNEDY, SARAH JANE 1 0.0% +0.0%
CHEUNG, HUBERT G 1 63.4% +47.8%
KARUNASENA, ENUSHA 1 25.0% +100.0%
SNYDER, ALAN W 1 82.2% +12.3%

Hard Cases (8)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
19482400 OPERATING LAMP CATTANACH, COLIN J —
18840703 ELECTRIC BATTERY GARCIA, BETHANY CLAIRE —
18835435 METHOD TO PRODUCE A BATTERY FOR ENERGY STORAGE AVINA, RACHEL MARIE —
18677043 SYSTEM AND METHOD FOR CONTROLLING MULTICOLOR LED LIGHT SYSTEM CHAI, RAYMOND REI-YANG —
17924832 METHOD FOR PREDICTING PROGNOSIS OF PATIENTS HAVING EARLY BREAST CANCER KENNEDY, SARAH JANE —
18329800 METHOD FOR GENERATING A PLAYLIST CHEUNG, HUBERT G —
18009879 TESTING METHOD AND APPARATUS KARUNASENA, ENUSHA —
17800140 MANUFACTURE OF A DENTAL PROSTHESIS SNYDER, ALAN W —

Interview Candidates (7)

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 7 ordered by deadline are shown.

App #TitleExaminerDue in
18721372 RESIN APPLICATION DEVICE FOR A CONVEYING SURFACE IN A PRINTING PROCESS, ASSEMBLY FOR PREPARING A CONVEYING SURFACE TO RECEIVE A SUBSTRATE IN A PRINTING PROCESS, METHOD OF PREPARING A CONVEYING SURFACE TO RECEIVE A SUBSTRATE IN A PRINTING PROCESS AND METHOD OF PRINTING A SUBSTRATE SENGUPTA, SONYA MAZUMDAR 139d overdue
19482400 OPERATING LAMP CATTANACH, COLIN J —
18840703 ELECTRIC BATTERY GARCIA, BETHANY CLAIRE —
18677043 SYSTEM AND METHOD FOR CONTROLLING MULTICOLOR LED LIGHT SYSTEM CHAI, RAYMOND REI-YANG —
18329800 METHOD FOR GENERATING A PLAYLIST CHEUNG, HUBERT G —
18009879 TESTING METHOD AND APPARATUS KARUNASENA, ENUSHA —
17800140 MANUFACTURE OF A DENTAL PROSTHESIS SNYDER, ALAN W —

Client Portfolio (9 clients)

Top Art Units

Art UnitApps
28751
17211
17341
17451
28441
26181
16821
21521
16451
37221

Pending Office Actions

App #TitleClientExaminerArt UnitStatutesStatusDue inAIFiled
19482400 OPERATING LAMP F.A.R.O. Fabbrica Apparecchiature Razionali Odontoiatriche S.p.A. CATTANACH, COLIN J 2875 §102§103§112 Non-Final OA — Pending Nov 07, 2025
18840703 ELECTRIC BATTERY G.D S.p.A. GARCIA, BETHANY CLAIRE 1721 §103§112 Non-Final OA — Pending Aug 22, 2024
18835435 METHOD TO PRODUCE A BATTERY FOR ENERGY STORAGE G.D S.p.A. AVINA, RACHEL MARIE 1734 §102§103Other Non-Final OA — Pending Aug 02, 2024
18721372 RESIN APPLICATION DEVICE FOR A CONVEYING SURFACE IN A PRINTING PROCESS, ASSEMBLY FOR PREPARING A CONVEYING SURFACE TO RECEIVE A SUBSTRATE IN A PRINTING PROCESS, METHOD OF PREPARING A CONVEYING SURFACE TO RECEIVE A SUBSTRATE IN A PRINTING PROCESS AND METHOD OF PRINTING A SUBSTRATE System Ceramics S.p.A. SENGUPTA, SONYA MAZUMDAR 1745 §102 Non-Final OA 139d overdue Pending Jun 18, 2024
18677043 SYSTEM AND METHOD FOR CONTROLLING MULTICOLOR LED LIGHT SYSTEM Global Industries Holdings, Ltd. CHAI, RAYMOND REI-YANG 2844 §102§103 Final Rejection — Pending May 29, 2024
18337979 IMAGE ENHANCEMENT METHOD AND WIDEFIELD FLUORESCENCE IMAGING SYSTEM Konfoong Biotech International Co., Ltd. KALHORI, DAN F 2618 §103 Non-Final OA — Pending Jun 20, 2023
17924832 METHOD FOR PREDICTING PROGNOSIS OF PATIENTS HAVING EARLY BREAST CANCER Seoul National University R&Db Foundation KENNEDY, SARAH JANE 1682 §101§103§112 Final Rejection — Pending Jun 15, 2023
18329800 METHOD FOR GENERATING A PLAYLIST Soundwaves LLC CHEUNG, HUBERT G 2152 §102§112 Non-Final OA — Pending Jun 06, 2023
18009879 TESTING METHOD AND APPARATUS Molendotech Limited KARUNASENA, ENUSHA 1645 §103 Non-Final OA — Pending Dec 12, 2022
17800140 MANUFACTURE OF A DENTAL PROSTHESIS Prima Healthcare Group Limited SNYDER, ALAN W 3722 §102§103 Non-Final OA — Pending Aug 16, 2022

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Frequently Asked Questions

What is Levenfeld Pearlstein, LLC's patent allowance rate?

90.3% of resolved applications prosecuted by Levenfeld Pearlstein, LLC were allowed, across 1,031 applications in USPTO records.

How many office actions does Levenfeld Pearlstein, LLC average before allowance?

2.64 office actions per allowed application on average.

How many pending office actions does Levenfeld Pearlstein, LLC have?

10 pending office actions as of October 2026, for 9 clients, before 10 examiners in 10 art units.

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