Last updated: July 17, 2026

Application No. 18/579,358

BIDIRECTIONAL TANGENTIAL FLOW FILTRATION (TFF) PERFUSION SYSTEM

Non-Final OA

Filed

Jan 14, 2024

Priority

Jul 15, 2021 — provisional 63/222,210 +1 more

Examiner

NGUYEN, HENRY H

Art Unit

Tech Center

Assignee

Just-Evotec Biologics Inc.

OA Round

1 (Non-Final)

This examiner grants 64% of cases after interview

— +37.7% interview lift. A telephonic interview to clarify the technical implementation could significantly improve the outcome.

Based on 281 resolved cases, 2023–2026

Examiner Intelligence

NGUYEN, HENRY H View full profile →

Grants 64% of resolved cases

Career Allowance Rate

179 granted / 281 resolved

+3.7% vs TC avg

Strong +38% interview lift

Without

With

+37.7%

Interview Lift

resolved cases with interview

Typical timeline

3y 3m

Avg Prosecution

83 currently pending

Career history

365

Total Applications

across all art units

Statute-Specific Performance

§101

0.8%

-39.2% vs TC avg

§103

72.6%

+32.6% vs TC avg

§102

14.2%

-25.8% vs TC avg

§112

7.4%

-32.6% vs TC avg

Black line = Tech Center average estimate • Based on career data from 281 resolved cases

Prosecution Timeline

Jan 14, 2024

Application Filed

Jun 05, 2026

Non-Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/554,064

Patent 12669514

MASS TAGS FOR LIPID ANALYSES

2y 8m to grant Granted Jun 30, 2026

18/151,916

Patent 12653518

EXPERIMENTAL CHIP

3y 5m to grant Granted Jun 16, 2026

18/245,631

Patent 12649153

ACTIVATION AND PRESSURE BALANCING MECHANISM

3y 2m to grant Granted Jun 09, 2026

17/844,993

Patent 12644884

SENSOR REFRESH SYSTEMS

3y 11m to grant Granted Jun 02, 2026

18/174,893

Patent 12643106

BIOLOGICAL SAMPLE STORAGE TUBE CAP, AND BIOLOGICAL SAMPLE STORAGE CONTAINER EQUIPPED WITH SAME

3y 3m to grant Granted Jun 02, 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.

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

Prosecution Projections

1-2

Expected OA Rounds

64%

Grant Probability

99%

With Interview (+37.7%)

3y 3m (~9m remaining)

Median Time to Grant

Low

PTA Risk

Based on 281 resolved cases by this examiner. Grant probability derived from career allowance rate.