Last updated: July 17, 2026

Application No. 18/700,970

WATER PURIFIER

Non-Final OA

Filed

Apr 12, 2024

Priority

Oct 15, 2021 — RE 10-2021-0137616 +1 more

Examiner

NGUYEN, BOI-LIEN THI

Art Unit

Tech Center

Assignee

Coway Co., Ltd.

OA Round

1 (Non-Final)

This examiner grants 25% of cases after interview

— +36.8% interview lift. A telephonic interview to clarify the technical implementation could significantly improve the outcome.

Based on 60 resolved cases, 2023–2026

Examiner Intelligence

NGUYEN, BOI-LIEN THI View full profile →

Grants only 25% of cases

Career Allowance Rate

15 granted / 60 resolved

-35.0% vs TC avg

Strong +37% interview lift

Without

With

+36.8%

Interview Lift

resolved cases with interview

Typical timeline

3y 7m

Avg Prosecution

27 currently pending

Career history

Total Applications

across all art units

Statute-Specific Performance

§103

92.9%

+52.9% vs TC avg

§112

6.5%

-33.5% vs TC avg

Black line = Tech Center average estimate • Based on career data from 60 resolved cases

Prosecution Timeline

Apr 12, 2024

Application Filed

Jun 05, 2026

Non-Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

17/836,421

Patent 12679747

WATER PURIFIER

4y 1m to grant Granted Jul 14, 2026

17/593,847

Patent 12629697

ORE DRESSING PROCESS FOR MEDIUM-GRADE AND LOW-GRADE MIXED COLLOPHANITE

4y 7m to grant Granted May 19, 2026

17/410,220

Patent 12605719

METHODS AND COMPOSITIONS FOR PROCESSING SULFIDE ORES

4y 8m to grant Granted Apr 21, 2026

17/940,580

Patent 12459844

ULTRAPURE WATER SUPPLYING APPARATUS, SUBSTRATE PROCESSING SYSTEM INCLUDING THE SAME, AND PROCESSING SUBSTRATE METHOD USING THE SAME

3y 1m to grant Granted Nov 04, 2025

17/644,906

Patent 12415190

Collector Composition and Methods of Using Thereof

3y 9m to grant Granted Sep 16, 2025

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.

Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2

Expected OA Rounds

25%

Grant Probability

62%

With Interview (+36.8%)

3y 7m (~1y 4m remaining)

Median Time to Grant

Low

PTA Risk

Based on 60 resolved cases by this examiner. Grant probability derived from career allowance rate.

WATER PURIFIER

This examiner grants 25% of cases after interview

Examiner Intelligence

Statute-Specific Performance

Prosecution Timeline

Precedent Cases

Applications granted by this same examiner with similar technology

Strategy Recommendation AI-generated — please review before filing

Prosecution Projections

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