Last updated: July 17, 2026

Application No. 18/548,990

PROCESSES FOR PURIFYING GLYCOL ETHERS

Non-Final OA

Filed

Sep 05, 2023

Priority

May 19, 2021 — nonprovisional of PCTCN2021094703

Examiner

BAHTA, MEDHANIT W

Art Unit

1692

Tech Center

1600 — Biotechnology & Organic Chemistry

Assignee

Dow Global Technologies LLC

OA Round

1 (Non-Final)

Interview Optional

— +28.8% interview lift. Examiner has a relatively high allowance rate (80%); +28.8% interview lift. A written response may suffice.

Based on 782 resolved cases, 2023–2026

Examiner Intelligence

BAHTA, MEDHANIT W View full profile →

Grants 80% — above average

Career Allowance Rate

629 granted / 782 resolved

+20.4% vs TC avg

Strong +29% interview lift

Without

With

+28.8%

Interview Lift

resolved cases with interview

Fast prosecutor

2y 0m

Avg Prosecution

37 currently pending

Career history

826

Total Applications

across all art units

Statute-Specific Performance

§101

0.7%

-39.3% vs TC avg

§103

57.5%

+17.5% vs TC avg

§102

10.9%

-29.1% vs TC avg

§112

11.3%

-28.7% vs TC avg

Black line = Tech Center average estimate • Based on career data from 782 resolved cases

Prosecution Timeline

Sep 05, 2023

Application Filed

Apr 29, 2026

Non-Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

17/628,808

Patent 12674804

Modular Chemical Probe For Detection Of Amino Acid Citrulline In Physiological Samples

4y 5m to grant Granted Jul 07, 2026

18/039,504

Patent 12673909

METHOD FOR CONTROLLING A REACTIVE DISTILLATION COLUMN

3y 1m to grant Granted Jul 07, 2026

18/253,164

Patent 12673911

PRODUCTION OF CANNABIDIOL FROM HEMP USING SUBCRITICAL LIQUID CARBON DIOXIDE

3y 1m to grant Granted Jul 07, 2026

17/789,407

Patent 12662439

METHOD FOR PREPARATION OF 1, 4-CYCLOHEXANEDIMETHANOL

3y 12m to grant Granted Jun 23, 2026

18/974,883

Patent 12662438

HFO-1234ZE AND HFO-1234YF COMPOSITIONS AND PROCESSES FOR PRODUCING AND USING THE COMPOSITIONS

1y 6m to grant Granted Jun 23, 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

80%

Grant Probability

99%

With Interview (+28.8%)

2y 0m (~0m remaining)

Median Time to Grant

Low

PTA Risk

Based on 782 resolved cases by this examiner. Grant probability derived from career allowance rate.