Last updated: April 22, 2026

Application No. 19/189,150

Untitled Application

Unknown

Filed

1600

Priority

Jun 29, 2021 — provisional 63/216,190 +3 more

Examiner

TRAN, CHRISTINA L

Art Unit

1637

Tech Center

KORRO BIO, INC.

Assignee

Korro Bio Inc.

OA Round

1 (Non-Final)

This examiner grants 43% of cases after interview

— +54.4% interview lift. A telephonic interview to clarify the technical implementation could significantly improve the outcome.

Based on 44 resolved cases, 2023–2026

Examiner Intelligence

TRAN, CHRISTINA L View full profile →

Grants 43% of resolved cases

Career Allowance Rate

19 granted / 44 resolved

-16.8% vs TC avg

Strong +54% interview lift

Without

With

+54.4%

Interview Lift

resolved cases with interview

Typical timeline

3y 10m

Avg Prosecution

56 currently pending

Career history

100

Total Applications

across all art units

Statute-Specific Performance

§101

6.5%

-33.5% vs TC avg

§103

30.8%

-9.2% vs TC avg

§102

13.9%

-26.1% vs TC avg

§112

35.0%

-5.0% vs TC avg

Black line = Tech Center average estimate • Based on career data from 44 resolved cases

Prosecution Timeline

1600

Application Filed

Nov 30, 2025

Non-Final Rejection (current)

Precedent Cases

Applications granted by this same examiner with similar technology

17/251,803

Patent 12584126

MICRORNA INHIBITORS FOR USE IN TREATING METABOLIC DISEASES

5y 3m to grant Granted Mar 24, 2026

17/415,852

Patent 12570707

CODON-OPTIMISED COMPLEMENT FACTOR I

4y 8m to grant Granted Mar 10, 2026

17/309,044

Patent 12545893

RECOMBINANT NERVOUS SYSTEM CELLS AND METHODS TO GENERATE THEM

4y 10m to grant Granted Feb 10, 2026

17/934,411

Patent 12529057

THERAPEUTICS FOR SYNGAP HAPLOINSUFFICIENCY

3y 4m to grant Granted Jan 20, 2026

17/309,607

Patent 12522818

METHOD FOR INDUCING DELETION IN GENOMIC DNA

4y 7m to grant Granted Jan 13, 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

43%

Grant Probability

98%

With Interview (+54.4%)

3y 10m

Median Time to Grant

Low

PTA Risk

Based on 44 resolved cases by this examiner. Grant probability derived from career allowance rate.