Last updated: July 05, 2026

Application No. 18/279,041

LITHIUM ION SECONDARY BATTERY AND SEPARATION MEMBRANE

Non-Final OA

Filed

Aug 25, 2023

Priority

Apr 08, 2021 — nonprovisional of PCTJP2021014933

Examiner

ZENG, LINGWEN R

Art Unit

1723

Tech Center

1700 — Chemical & Materials Engineering

Assignee

LG Energy Solution Ltd.

OA Round

1 (Non-Final)

Interview Optional

— +20.2% interview lift. Examiner has a relatively high allowance rate (77%); +20.2% interview lift. A written response may suffice.

Based on 531 resolved cases, 2023–2026

Examiner Intelligence

ZENG, LINGWEN R View full profile →

Grants 77% — above average

Career Allowance Rate

407 granted / 531 resolved

+11.6% vs TC avg

Strong +20% interview lift

Without

With

+20.2%

Interview Lift

resolved cases with interview

Typical timeline

3y 1m

Avg Prosecution

39 currently pending

Career history

563

Total Applications

across all art units

Statute-Specific Performance

§101

0.2%

-39.8% vs TC avg

§103

91.3%

+51.3% vs TC avg

§102

6.8%

-33.2% vs TC avg

§112

0.5%

-39.5% vs TC avg

Black line = Tech Center average estimate • Based on career data from 531 resolved cases

Prosecution Timeline

Aug 25, 2023

Application Filed

Apr 09, 2026

Non-Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/024,576

Patent 12671132

Battery Cell and Battery Module Including the Same

3y 4m to grant Granted Jun 30, 2026

18/024,849

Patent 12665235

BATTERY PACK AND DEVICE INCLUDING THE SAME

3y 3m to grant Granted Jun 23, 2026

18/319,029

Patent 12658492

SINGLE-PIECE OVER-MOLDED COOLANT SUBSYSTEM

3y 1m to grant Granted Jun 16, 2026

18/213,160

Patent 12646748

VANADIUM ELECTROLYTE, PREPARATION PROCESS AND USE THEREOF

2y 11m to grant Granted Jun 02, 2026

17/766,858

Patent 12640444

BATTERY MODULE, BATTERY PACK INCLUDING THE SAME AND METHOD OF MANUFACTURING BATTERY MODULE

4y 1m to grant Granted May 26, 2026

Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.

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Prosecution Projections

1-2

Expected OA Rounds

77%

Grant Probability

97%

With Interview (+20.2%)

3y 1m (~3m remaining)

Median Time to Grant

Low

PTA Risk

Based on 531 resolved cases by this examiner. Grant probability derived from career allowance rate.