Last updated: July 17, 2026

Application No. 18/894,383

LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS

Non-Final OA

Filed

Sep 24, 2024

Priority

Sep 25, 2023 — JP 2023-161499

Examiner

ZIMMERMANN, JOHN P

Art Unit

2853

Tech Center

2800 — Semiconductors & Electrical Systems

Assignee

Canon Inc.

OA Round

1 (Non-Final)

Interview Optional

— +19.3% interview lift. Examiner has a relatively high allowance rate (83%); +19.3% interview lift. A written response may suffice.

Based on 745 resolved cases, 2023–2026

Examiner Intelligence

ZIMMERMANN, JOHN P View full profile →

Grants 83% — above average

Career Allowance Rate

618 granted / 745 resolved

+15.0% vs TC avg

Strong +19% interview lift

Without

With

+19.3%

Interview Lift

resolved cases with interview

Fast prosecutor

2y 1m

Avg Prosecution

27 currently pending

Career history

770

Total Applications

across all art units

Statute-Specific Performance

§101

0.1%

-39.9% vs TC avg

§103

94.9%

+54.9% vs TC avg

§102

3.8%

-36.2% vs TC avg

§112

0.2%

-39.8% vs TC avg

Black line = Tech Center average estimate • Based on career data from 745 resolved cases

Prosecution Timeline

Sep 24, 2024

Application Filed

Apr 15, 2026

Non-Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/546,415

Patent 12679988

INK SET, INKJET RECORDING METHOD, INK MEDIUM SET, AND PRINTING MEDIUM

2y 11m to grant Granted Jul 14, 2026

18/598,227

Patent 12679985

RESIN COMPOSITION, AQUEOUS INK FOR INK JET RECORDING, INK JET RECORDING DEVICE, AND INK JET RECORDING METHOD

2y 4m to grant Granted Jul 14, 2026

18/614,767

Patent 12679107

THERMAL TRANSFER PRINTING METHOD, PRINTER, AND READABLE STORAGE MEDIUM

2y 3m to grant Granted Jul 14, 2026

18/536,273

Patent 12673494

LIQUID DISCHARGE HEAD, HEAD MODULE, LIQUID DISCHARGE UNIT, AND LIQUID DISCHARGE APPARATUS

2y 6m to grant Granted Jul 07, 2026

18/728,442

Patent 12668061

FLUIDIC STRUCTURES FOR FLUID EJECTION DEVICES

1y 11m to grant Granted Jun 30, 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

83%

Grant Probability

99%

With Interview (+19.3%)

2y 1m (~3m remaining)

Median Time to Grant

Low

PTA Risk

Based on 745 resolved cases by this examiner. Grant probability derived from career allowance rate.