Prosecution Insights
Last updated: August 08, 2026

Celgard LLC

13 pending office actions • 10 art units • 13 examiners • 0 of 13 (0%) have an AI response strategy ready • 14 patents granted in the last 365 days

Portfolio Summary

13
Total Pending OAs
7
Non-Final OAs
5
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 5 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

4
Overdue
0
Due this week
1
Due this month
0
Due in next 60 days
0
Due later

Deadline Fire Line

Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 5 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (4)Due ≤ 30 days (1)

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 (54%)
6
Medium (46%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only4 (31%)
Double-patenting + other2 (15%)
Multi-statute (no §101)7 (54%)

Industry Mix

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

12
Life Sciences
92% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
1
Business / Other
8% 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.

130 h
Manual time on pending OAs
26 h
Time saved (low, 20%)
46 h
Time saved (mid, 35%)
1.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
KUMAR, SRILAKSHMI K 1 50.8% +16.1%
EOFF, ANCA 1 80.0% +11.0%
OTERO, KENNETH MAX 1 50.0% +33.3%
QIAO, HUIHONG 1 70.7% +24.9%
ALBAN, FELICITY BERNARD 1 58.1% +41.2%
APICELLA, KARIE O 1 80.5% +12.4%
DAVIS, ZACHARY M 1 69.6% +31.4%
PILLAY, DEVINA 1 43.9% +26.3%
BLACKWELL-RUDASIL, RYAN KENZIE 1 70.6% +41.7%
HEMINGWAY, TIMOTHY G 1 40.3% +20.2%

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
18589298 COATED SEPARATORS, LITHIUM BATTERIES, AND RELATED METHODS EOFF, ANCA 3d overdue

Hard Cases (7)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 7 ordered by deadline are shown.

App #TitleExaminerDue in
18743035 IMPROVED MEMBRANES, CALENDERED MICROPOROUS MEMBRANES, BATTERY SEPARATORS, AND RELATED METHODS KUMAR, SRILAKSHMI K 29d overdue
18015423 SECONDARY BATTERY WITH IMPROVED BATTERY SEPARATOR BLACKWELL-RUDASIL, RYAN KENZIE 5d overdue
17275677 MULTILAYER MEMBRANES, SEPARATORS, BATTERIES, AND METHODS TAKEUCHI, YOSHITOSHI 15d
18287035 MEMBRANE WITH REACTED NETWORKS ALBAN, FELICITY BERNARD
18377801 BATTERY SEPARATORS AND RELATED METHODS APICELLA, KARIE O
18280227 HEAT STABILIZED MEMBRANE DAVIS, ZACHARY M
18277546 IMPROVED ADHESIVE COATING, COATED MEMBRANES, COATED BATTERY SEPARATORS, AND RELATED METHODS PILLAY, DEVINA

Interview Candidates (10)

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 8 ordered by deadline are shown.

App #TitleExaminerDue in
18743035 IMPROVED MEMBRANES, CALENDERED MICROPOROUS MEMBRANES, BATTERY SEPARATORS, AND RELATED METHODS KUMAR, SRILAKSHMI K 29d overdue
18015423 SECONDARY BATTERY WITH IMPROVED BATTERY SEPARATOR BLACKWELL-RUDASIL, RYAN KENZIE 5d overdue
18589298 COATED SEPARATORS, LITHIUM BATTERIES, AND RELATED METHODS EOFF, ANCA 3d overdue
18683477 HEAT DISSIPATION SEPARATORS FOR HIGH ENERGY BATTERIES OTERO, KENNETH MAX
18413284 COATINGS, COATED SEPARATORS, BATTERIES, AND RELATED METHODS QIAO, HUIHONG
18287035 MEMBRANE WITH REACTED NETWORKS ALBAN, FELICITY BERNARD
18377801 BATTERY SEPARATORS AND RELATED METHODS APICELLA, KARIE O
18280227 HEAT STABILIZED MEMBRANE DAVIS, ZACHARY M

Top Art Units

Art UnitApps
1722 2
1723 2
1759 1
1763 1
1728 1
1725 1
1783 1
1726 1
1754 1
1721 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18743035 IMPROVED MEMBRANES, CALENDERED MICROPOROUS MEMBRANES, BATTERY SEPARATORS, AND RELATED METHODS KUMAR, SRILAKSHMI K 1759 §103§112Other Non-Final OA 29d overdue Pending Jun 13, 2024
18589298 COATED SEPARATORS, LITHIUM BATTERIES, AND RELATED METHODS EOFF, ANCA 1722 §103 Final Rejection 3d overdue Pending Feb 27, 2024
18683477 HEAT DISSIPATION SEPARATORS FOR HIGH ENERGY BATTERIES OTERO, KENNETH MAX §102§103DP Non-Final OA Pending Feb 13, 2024
18413284 COATINGS, COATED SEPARATORS, BATTERIES, AND RELATED METHODS QIAO, HUIHONG 1763 §103§112DP Non-Final OA Pending Jan 16, 2024
18287035 MEMBRANE WITH REACTED NETWORKS ALBAN, FELICITY BERNARD 1728 §103§112 Final Rejection Pending Oct 16, 2023
18377801 BATTERY SEPARATORS AND RELATED METHODS APICELLA, KARIE O 1725 §102§112 Non-Final OA Pending Oct 08, 2023
18280227 HEAT STABILIZED MEMBRANE DAVIS, ZACHARY M 1783 §103§112 Non-Final OA Pending Sep 03, 2023
18277546 IMPROVED ADHESIVE COATING, COATED MEMBRANES, COATED BATTERY SEPARATORS, AND RELATED METHODS PILLAY, DEVINA 1726 §102§103§112 Non-Final OA Pending Aug 16, 2023
18015423 SECONDARY BATTERY WITH IMPROVED BATTERY SEPARATOR BLACKWELL-RUDASIL, RYAN KENZIE 1722 §102§103§112 Final Rejection 5d overdue Pending Jan 10, 2023
18007745 A HEAT-RESISTANT BATTERY SEPARATORS AND RELATED BATTERIES AND METHODS HEMINGWAY, TIMOTHY G 1754 §103 Non-Final OA Pending Dec 02, 2022
17613106 IMPROVED COATED BATTERY SEPARATORS AND BATTERIES SIDDIQUEE, MUHAMMAD S 1723 §103 Non-Final OA 140d overdue Pending Nov 22, 2021
17275677 MULTILAYER MEMBRANES, SEPARATORS, BATTERIES, AND METHODS TAKEUCHI, YOSHITOSHI 1723 §103§112 Final Rejection 15d Pending Mar 12, 2021
17263849 Safer Batteries and Separators for Batteries; Solutions on Li-Ion Edv/Ess Battery Safety; Solutions on Anode/Electrolyte/Cathode Reduction and/or Oxidation Issues; and, Improved Batteries, Anodes, and/or Separators GARCIA, BETHANY CLAIRE 1721 §103 Final Rejection Pending Jan 27, 2021

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