Last updated: April 24, 2026

Application No. 18/893,386

Untitled Application

Unknown

Filed

2400

Examiner

CHANG, KENNETH W

Art Unit

2438

Tech Center

AT&T Intellectual Property I, L.P.

Assignee

AT&T Intellectual Property I, L.P.

OA Round

1 (Non-Final)

Interview Optional

— +0.7% interview lift. This examiner has a relatively high allow rate; a written response may suffice.

Based on 616 resolved cases, 2023–2026

Examiner Intelligence

CHANG, KENNETH W View full profile →

Grants 87% — above average

Career Allow Rate

534 granted / 616 resolved

+26.7% vs TC avg

Minimal +1% lift

Without

With

+0.7%

Interview Lift

resolved cases with interview

Typical timeline

2y 7m

Avg Prosecution

17 currently pending

Career history

633

Total Applications

across all art units

Statute-Specific Performance

§101

14.1%

-25.9% vs TC avg

§103

37.6%

-2.4% vs TC avg

§102

17.6%

-22.4% vs TC avg

§112

18.1%

-21.9% vs TC avg

Black line = Tech Center average estimate • Based on career data from 616 resolved cases

Prosecution Timeline

2400

Application Filed

Jan 08, 2026

Non-Final Rejection (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/100,619

Patent 12574408

POST-INCIDENT ALERTS FOR PII DATA LOSS

2y 5m to grant Granted Mar 10, 2026

18/194,741

Patent 12568118

SHORTEST PATH BRIDGING (SPB) SECURITY GROUP POLICY

2y 5m to grant Granted Mar 03, 2026

17/937,101

Patent 12554508

PROCESSING COMPLEX PACKED TENSORS USING INTEGRATED CIRCUIT OF REAL AND COMPLEX PACKED TENSORS IN COMPLEX DOMAIN

2y 5m to grant Granted Feb 17, 2026

18/129,814

Patent 12537666

EFFICIENT IMPLEMENTATION OF ZUC AUTHENTICATION

2y 5m to grant Granted Jan 27, 2026

18/669,820

Patent 12536312

FILE VIEWING SYSTEM, FILE VIEWING METHOD, AND STORAGE MEDIUM

2y 5m to grant Granted Jan 27, 2026

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

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.

Prosecution Projections

1-2

Expected OA Rounds

87%

Grant Probability

87%

With Interview (+0.7%)

2y 7m

Median Time to Grant

Low

PTA Risk

Based on 616 resolved cases by this examiner. Grant probability derived from career allow rate.