Last updated: July 05, 2026

Application No. 18/553,266

METHODS AND CATALYST SYSTEMS FOR PRODUCTION OF ISOTACTIC POLYPROPYLENE

Non-Final OA

Filed

Sep 29, 2023

Priority

Mar 31, 2021 — provisional 63/168,603 +1 more

Examiner

BHUSHAN, KUMAR R

Art Unit

1766

Tech Center

1700 — Chemical & Materials Engineering

Assignee

Dow Global Technologies LLC

OA Round

1 (Non-Final)

Interview Optional

— +32.8% interview lift. Interview already conducted in this application's prosecution history. This examiner has a 73% grant rate with +32.8% interview lift. Since an interview has already been tried, recommend written response with narrowed claims based on precedent claim evolution patterns.

Based on 807 resolved cases, 2023–2026

Examiner Intelligence

BHUSHAN, KUMAR R View full profile →

Grants 73% — above average

Career Allowance Rate

592 granted / 807 resolved

+8.4% vs TC avg

Strong +33% interview lift

Without

With

+32.8%

Interview Lift

resolved cases with interview

Typical timeline

2y 9m

Avg Prosecution

48 currently pending

Career history

849

Total Applications

across all art units

Statute-Specific Performance

§101

0.4%

-39.6% vs TC avg

§103

79.2%

+39.2% vs TC avg

§102

10.5%

-29.5% vs TC avg

§112

5.6%

-34.4% vs TC avg

Black line = Tech Center average estimate • Based on career data from 807 resolved cases

Prosecution Timeline

Sep 29, 2023

Application Filed

Apr 07, 2026

Non-Final Rejection mailed

May 07, 2026

Interview Requested

May 22, 2026

Examiner Interview Summary

May 22, 2026

Applicant Interview (Telephonic)

Precedent Cases

Applications granted by this same examiner with similar technology

17/619,013

Patent 12668690

ARTICLES WITH HIGH RIGIDITY AND LOW WARPAGE COMPRISING HETEROPHASIC PROPYLENE POLYMER COMPOSITION AND USES THEREFOR

4y 6m to grant Granted Jun 30, 2026

18/023,931

Patent 12668689

POLYOLEFIN PIPE RESIN WITH VERY GOOD SAGGING AND SLOW CRACK GROWTH RESISTANCE

3y 4m to grant Granted Jun 30, 2026

18/026,973

Patent 12668695

New Polymer Blends and Method for Making the Same

3y 3m to grant Granted Jun 30, 2026

17/799,058

Patent 12649822

VINYL CHLORIDE RESIN PLASTICIZING AGENT, VINYL CHLORIDE RESIN COMPOSITION, AND MOLDED ARTICLE THEREOF

3y 10m to grant Granted Jun 09, 2026

18/026,481

Patent 12649826

POLYETHYLENE GLYCOL DERIVATIVE, COMPOSITION COMPRISING SAME, AND METHOD FOR PREPARING BIOACTIVE POLYPEPTIDE CONJUGATE BY USING SAME

3y 2m to grant Granted Jun 09, 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

73%

Grant Probability

99%

With Interview (+32.8%)

2y 9m (~0m remaining)

Median Time to Grant

Low

PTA Risk

Based on 807 resolved cases by this examiner. Grant probability derived from career allowance rate.